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Synthesis and Magnetic Properties of Mn/Fe/Co Binary Solid Solution in the A-site of V2SnC-MAX Phases 认领 引用
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作者 YAN Ming DENG Yuxiao +2 位作者 YAN Zhuanlong LI Hongyu CAO Mengyang 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2026年第2期353-363,共11页
This study reported the synthesis of magnetic solid solutions V2(AxBySn1-x-y)C(where A and B are Mn,Fe,or Co)MAX phases.These materials were prepared by incorporating magnetic elements into the V2SnC MAX p... This study reported the synthesis of magnetic solid solutions V2(AxBySn1-x-y)C(where A and B are Mn,Fe,or Co)MAX phases.These materials were prepared by incorporating magnetic elements into the V2SnC MAX phase via pressure-less sintering at 1000℃for 3 hours.XRD analysis reveals that the composition with x=y=0.2 exhibits a shift of diffraction peaks to higher angles,indicating lattice parameter changes,and achieves the highest phase purity with the maximum solid solution limit,further increases in the dopant content led to the formation of impurities.While the solid solution of magnetic elements preserves the characteristic layered structure of the MAX phase,it successfully induces magnetic properties.The magnetic transition temperatures for these solid solutions ranges from 61 to 200 K.Specifically,V2(MnxCoySn1-x-y)C demonstrated hard magnetic characteristics,with a high saturation magnetization(6.536 emu/g)and large remanence(4.236 emu/g).In contrast,V2(MnxFeySn1-x-y)C and V2(FexCoySn1-x-y)C exhibits soft magnetic behavior,evidenced by their narrow hysteresis loops and low coercivity.Their saturation magnetization values are 3.80 and 1.784 emu/g,respectively.The distinctly"S"-shaped hysteresis loop of V2(FexCoySn1-x-y)C further confirms its soft magnetic nature. 展开更多
关键词 V2SnC solid solution pressure less sintering magnetic MAX phase density functional theory
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Structure and Electrical Properties of Sr1-xNaxNb5O15Solid Solution Ceramic Systems 认领 引用
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作者 HAO Rui DENG Zhuo +3 位作者 MA Zhanying YU Tianmiao CAO Mengxin WEI Lingling 《硅酸盐学报》 EI CAS CSCD 北大核心 2026年第6期1980-1990,共11页
Introduction As an important branch of lead-free piezoelectric materials,ceramics with a tetragonal tungsten bronze(TTB)structure have a high spontaneous polarization strength,high Curie temperature(TC),and beneficial... Introduction As an important branch of lead-free piezoelectric materials,ceramics with a tetragonal tungsten bronze(TTB)structure have a high spontaneous polarization strength,high Curie temperature(TC),and beneficial dielectric properties,making them particularly useful in ferroelectric applications.Depending on which sites are filled,the TTB structure can be divided into three categories,i.e.,the“stuffed”structure,the“filled”structure and the“unfilled”structure.As a typical“filled”TTB compound,the Sr1-xNaxNb5O15(SNN)ceramics can be regulated through compositional design to exhibit a wide range of structures and functional characteristics,which have a broad development potential in the fields of dielectric energy storage,multiferroic materials,nonlinear optics,and pyroelectric sensors.However,SNN ceramics require relatively high sintering temperatures,and the secondary phase Na0.5Sr0.25NbO3(NSN)readily forms during the sintering process,which adversely affects the electrical properties.Although some previous studies used the methods of eliminating the impurity phase,there could be few studies on the relationship between impurities and the properties of SNN ceramics.In this paper,SNN ceramics(i.e.,Sr1-xNaxNb5O15,0.56≤x≤1.06)were prepared with the Sr Nb2O6(SN)–NaNbO3(NN)binary solid solution system,to examine the relationship among the presence of the secondary phases and the ceramic composition,as well as the sintering temperature.Methods SN and NN powders were synthesized by a solid-state method with reagent-grade Sr CO3(99.99%),Na2CO3(99.99%),and Nb2O5(99.99%)as raw materials.The starting raw materials were pre-dried at 120℃for 24 h,and then weighed according to the target stoichiometric ratios.The powders were thoroughly mixed in ethanol in a planetary ball mill with ZrO2balls at 401 r/min for 20h.The mixtures were dried at 80℃for 24 h,and then calcined at their respective suitable temperatures.Subsequently,the SN and NN powders were obtained by separately grinding the calcined products in a mortar after natural cooling.Afterwards,SNN ceramics(Sr1-xNaxNb5O15,0.56≤x≤1.06)were synthesized with polycrystalline SN and NN according to the desired SNN compositions,calcined at 1220℃for 6 h,and uniaxially compacted into pellets with a binder(namely 5%polyvinyl alcohol).The binder was removed at a high temperature.Finally,SNN ceramics were prepared by sintering at 1280–1340℃for 4 h.The effect of the secondary phases on the structure of SNN ceramics was investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM)and field emission transmission electron microscopy(FETEM).Furthermore,the ceramics were ground and polished down to a thickness of about 0.6 mm,coated with silver electrodes,and fired at 840℃for 30 min.Their dielectric characteristics and piezoelectric coefficients d33were measured by the LCR meter and quasi-static piezoelectric meter.The ceramics were also ground and polished down to a thickness of about 0.2 mm and coated with gold electrodes to record the room-temperature ferroelectric hysteresis loops by a Radiant Precision Workstation.Results and discussion The required composition and sintering temperature ranges of the SNN pure phase are determined.For Na+contents(x)of 0.56–0.68,SN–NN can be solidly dissolved to obtain a pure phase at high temperatures(i.e.,>1280℃).As x=0.71 and 0.80,SN–NN can be solidly dissolved at 1200–1360℃.At the Na+content of 0.88,the SN-NN solid solution can be obtained,but it decomposes at higher temperatures(>1320℃),accompanying the formation of the secondary NN phase.As the Na+content further increases,it cannot be solidly dissolved at 1200–1360℃.The maximum density is obtained for SNN ceramics sintered at 1340℃,and the change in Na+content has little effect on the microstructure.The TC of SNN ceramics increases from 272℃as x=0.56 to 323℃as x=0.88 because the crystal structure changes from“unfilled”to“filled”as the Na+content increases,thus affecting the degree of crystal distortion.TC gradually decreases because a minor amount of NN appears at x of 0.88.The dielectric constant(εr)of SNN ceramics initially increases and then decreases,exhibiting a maximum of 1664 as x=0.80.The dielectric loss(tanδ)remains at a low value at this point.The remnant polarization Pr(11.49μC/cm2)and coercive field Ec(20.99 k V/cm)are both nearly maximized as x=0.80 for SNN ceramics due to the“filled”TTB structure,and the maximum d33value of 34 p C/N is obtained for SNN ceramics as x=0.80,which is consistent with the optimal composition for ferroelectric properties.Conclusions Based on the XRD patterns,the ceramics with a stable,pure TTB phase could be obtained by sintering at 1200–1360℃when x=0.71–0.80,and the existence of this phase depended on the ceramic composition and the sintering temperature.As the Na+content increased,TC initially increased because the filling degree of the TTB structure increased,and then gradually decreasesd when x>0.88 because the increase in Na+content induced the formation of the secondary NN phase.When x=0.71–0.88,the electrical properties could be optimal.The ceramic with x of 0.80 demonstrated a high ferroelectric performance(i.e.,Pr=11.49μC/cm2,and Ec=20.99 k V/cm).This study could provide certain theoretical basis and technical support for the subsequent studies of SNN ceramics. 展开更多
关键词 strontium niobate-sodium niobate binary solid solution ceramic concentration sintering temperature ferroelectric performance
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Effect and mechanism of Ti−O solid solution layer on interfacial bonding strength of cold roll bonded titanium/stainless steel laminated composite plate 认领 引用
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作者 Zhi-yan YANG Xue-feng LIU +1 位作者 Hong-ting CHEN Xin MA 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2026年第1期171-182,共12页
Titanium plates with a Ti−O solid solution surface-hardened layer were cold roll-bonded with 304 stainless steel plates with high work hardening rates.The evolution and mechanisms affecting the interfacial bonding str... Titanium plates with a Ti−O solid solution surface-hardened layer were cold roll-bonded with 304 stainless steel plates with high work hardening rates.The evolution and mechanisms affecting the interfacial bonding strength in titanium/stainless steel laminated composites were investigated.Results indicate that the hardened layer reduces the interfacial bonding strength from over 261 MPa to less than 204 MPa.During the cold roll-bonding process,the hardened layer fractures,leading to the formation of multi-scale cracks that are difficult for the stainless steel to fill.This not only hinders the development of an interlocking interface but also leads to the presence of numerous microcracks and hardened blocks along the nearly straight interface,consequently weakening the interfacial bonding strength.In metals with high work hardening rates,the conventional approach of enhancing interface interlocking and improving interfacial bonding strength by using a surface-hardened layer becomes less effective. 展开更多
关键词 titanium/stainless steel laminated composite plate Ti−O solid solution hardened layer interlocking interface formation mechanism interfacial bonding strength
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Facile synthesis of Na0.9Mg0.45Ti3.55O8-Na2Ni2Ti6O16solid solutions for improving photocatalytic CO2reduction 认领 引用
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作者 WANG Jingzhou YAO Chenzhong +2 位作者 ZHANG Xisheng MA Ziwei LI Linfeng 《燃料化学学报（中英文）》 EI CAS CSCD 北大核心 2026年第1期15-25,共11页
In this study,a straightforward one-step hydrothermal method was successfully utilized to synthesize the solid solution Na0.9Mg0.45Ti3.55O8-Na2Ni2Ti6O16(NNMTO-x),where x denotes the molar perce... In this study,a straightforward one-step hydrothermal method was successfully utilized to synthesize the solid solution Na0.9Mg0.45Ti3.55O8-Na2Ni2Ti6O16(NNMTO-x),where x denotes the molar percentage of Na2Ni2Ti6O16(NNTO)within Na0.9Mg0.45Ti3.55O8(NMTO),with x values of 10,20,30,40,and 50.Both XPS(X-ray Photoelectron Spectroscopy)and EDX(Energy Dispersive X-ray Spectroscopy)analyses unequivocally validated the formation of the NNMTO-x solid solutions.It was observed that when x is below 40,the NNMTO-x solid solution retains the structural characteristics of the original NMTO.However,beyond this threshold,significant alterations in crystal morphology were noted,accompanied by a noticeable decline in photocatalytic activity.Notably,the absorption edge of NNMTO-x(x<40)exhibited a shift towards the visible-light spectrum,thereby substantially broadening the absorption range.The findings highlight that NNMTO-30 possesses the most pronounced photocatalytic activity for the reduction of CO2.Specifically,after a 6 h irradiation period,the production rates of CO and CH4were recorded at 42.38 and 1.47μmol/g,respectively.This investigation provides pivotal insights that are instrumental in the advancement of highly efficient and stable photocatalysts tailored for CO2reduction processes. 展开更多
关键词 photocatalytic conversion hydrothermal method optical response range solid solution charge separation
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V–Ti‑Based Solid Solution Alloys for Solid‑State Hydrogen Storage 认领 引用 被引量：4
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作者 Shaoyang Shen Yongan Li +3 位作者 Liuzhang Ouyang Lan Zhang Min Zhu Zongwen Liu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2025年第7期453-482,共30页
This review details the advancement in the development of V–Ti-based hydrogen storage materials for using in metal hydride(MH)tanks to supply hydrogen to fuel cells at relatively ambient temperatures and pressures.V... This review details the advancement in the development of V–Ti-based hydrogen storage materials for using in metal hydride(MH)tanks to supply hydrogen to fuel cells at relatively ambient temperatures and pressures.V–Tibased solid solution alloys are excellent hydrogen storage materials among many metal hydrides due to their high reversible hydrogen storage capacity which is over 2 wt%at ambient temperature.The preparation methods,structure characteristics,improvement methods of hydrogen storage performance,and attenuation mechanism are systematically summarized and discussed.The relationships between hydrogen storage properties and alloy compositions as well as phase structures are discussed emphatically.For large-scale applications on MH tanks,it is necessary to develop low-cost and high-performance V–Ti-based solid solution alloys with high reversible hydrogen storage capacity,good cyclic durability,and excellent activation performance. 展开更多
关键词 Hydrogen storage V-Ti-based solid solution alloys Metal hydride tank Hydrogen storage properties Cyclic stability
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Engineering surface and subsurface oxygen vacancies of CexZr1-xO2 solid solution for enhanced total toluene oxidation 认领 引用 被引量：1
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作者 Yang Yu Mingjia Zhang +5 位作者 Huangang Shi Jifa Qu Yongheng Xiong Wenyi Tan Xinlei Ge Qijie Jin 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2025年第12期39-49,共11页
Most studies have shown that oxygen vacancies on CexZr1-xO2 solid solution are important for enhancing the catalytic oxidation performance.However,a handful of studies investigated the different roles of surf... Most studies have shown that oxygen vacancies on CexZr1-xO2 solid solution are important for enhancing the catalytic oxidation performance.However,a handful of studies investigated the different roles of surface and subsurface oxygen vacancies on the performance and mechanisms of catalysts.Herein,a series of zirconium doping on CeO2 samples(CeO2,Ce0.95Zr0.05O2,and Ce0.85Zr0.15O2)with various surface-to-subsurface oxygen vacancies ratios have been synthesized and applied in toluene catalytic oxidation.The obtained Ce0.95Zr0.05O2 exhibits an excellent catalytic performance with a 90%toluene conversion at 295℃,which is 68℃lower than that of CeO2.Additionally,the obtained Ce0.95Zr0.05O2catalyst also exhibited good catalytic stability and water resistance.The XRD and HRTEM results show that Zr ions are incorporated into CeO2 lattice,forming CexZr1-xO2 solid solution.Temperature-programmed experiments reveal that Ce0.95Zr0.05O2 shows excellent lowtemperature reducibility and abundant surface oxygen species.In-situ DRIFTS tests were used to probe the reaction mechanism,and the function of Zr doping in promoting the activation of oxygen was further determined.Density functional theory(DFT)calculations indicate that the vacancy formation energy and O2 adsorption energy are both lower on Ce0.95Zr0.05O2,confirming the reason for its superior catalytic performance. 展开更多
关键词 CexZr1-xO2solid solution Toluene oxidation Surface oxygen species DFT calculations
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Unusual tensile strengths and strain-hardening behaviors and their structural correlation of Mg-RE solid solution 认领 引用
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作者 Wenbo Luo Rongsheng Bai +7 位作者 Zhilei Yu Xiuzhu Han Tong Guo Zhiyong Xue Chen Wen Mingyue Zheng Feng Li Zhihao Lin 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2025年第8期4032-4044,共13页
This study systematically investigates the unusual tensile mechanical behavior of Mg-RE solid solution(SS)alloys,exhibiting anomalous tensile strengths(ATS)and an enhanced strain-hardening rate at high temperature.Bot... This study systematically investigates the unusual tensile mechanical behavior of Mg-RE solid solution(SS)alloys,exhibiting anomalous tensile strengths(ATS)and an enhanced strain-hardening rate at high temperature.Both the peak ultimate tensile strength(UTS)and tensile yield strength(TYS)values occur at 150-200℃,which are 12-50%higher compared to those at room temperature(RT).Meanwhile,the strain-hardening rate increases with the temperature rising from RT to 200℃ during the plastic deformation process.The results reveal that the formation of stacking faults(SFs)and the locking of dislocations,particularly immobile (c) partial dislocations,enhance resistance to plastic deformation,leading to higher strengths at high temperature.Furthermore,the interactivity between SFs and (c+a) dislocations intensify with rising of temperature.The presence of RE atoms in the SS plays a critical role in this unique mechanical behavior,as they preferentially occupy non-basal planes rather than basal planes,thereby reducing the stacking fault(SF)formation energy.This study provides new insights into the high-temperature strengthening mechanisms of Mg-RE based alloys,offering potential guidance for the design of advanced lightweight materials with superior mechanical properties. 展开更多
关键词 Anomalous tensile strength Mg-RE alloy Solid solution Heat-resistance Molecular dynamics
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Separation of chlorine-bromine-based solid solution in bittern tail solution by phase equilibrium 认领 引用
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作者 Yulong Zhang Hongchao Yue +4 位作者 Yanru Zhang Yun Li Hongfei Guo Dong Xu Jilin Cao 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2025年第7期62-71,共10页
Solid solution hinders the extraction of bromine resources from bittern.To separate chlorine-brominebased solid solution in bittern tail solution,the solubilities of the quaternary system KCl-KBr-NaCl-NaBr-H2O and ... Solid solution hinders the extraction of bromine resources from bittern.To separate chlorine-brominebased solid solution in bittern tail solution,the solubilities of the quaternary system KCl-KBr-NaCl-NaBr-H2O and its ternary subsystem NaBr-KBr-H2O at 333.15 K were determined by the isothermal dissolution method,and the corresponding phase diagrams were conducted.An improved model was employed to predict the solubilities of the quaternary system KCl-KBr-NaCl-NaBr-H2O at 333.15 K.The calculated results coincide with the experimental values,implying that the prediction method is feasible.A closed loop crystallization process for the separation of chlorine-bromine-based solid solution in bittern tail solution was proposed and NaBr was obtained with a purity of 98.23%. 展开更多
关键词 Solid solution Solubility Phase equilibria Pitzer model Crystallization
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Solid solution dependence of the deformation behavior in Mg-xZn(x=0,1,2 wt%)alloys:In-situ neutron diffraction and crystal plasticity modeling 认领 引用
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作者 Huai Wang Soo Yeol Lee +3 位作者 You Sub Kim Huamiao Wang Wanchuck Woo Ke An 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2025年第2期823-838,共16页
The effects of solid solution on the deformation behavior of binary Mg-xZn(x=0,1,2 wt%)alloys featuring a designated texture that enables extension twinning under tension parallel to the basal pole in most grains,were... The effects of solid solution on the deformation behavior of binary Mg-xZn(x=0,1,2 wt%)alloys featuring a designated texture that enables extension twinning under tension parallel to the basal pole in most grains,were investigated using in-situ neutron diffraction and the EVPSC-TDT model.Neutron diffraction was used to quantitatively track grain-level lattice strains and diffraction intensity changes(related to mechanical twinning)in differently oriented grains of each alloy during cyclic tensile/compressive loadings.These measurements were accurately captured by the model.The stress-strain curves of Mg-1 wt%Zn and Mg-2 wt%Zn alloys show as-expected solid solution strengthening from the addition of Zn compared to pure Mg.The macroscopic yielding and hardening behaviors are explained by alternating slip and twinning modes as calculated by the model.The solid solution's influence on individual deformation modes,including basal〈a〉slip,prismatic〈a〉slip,and extension twinning,was then quantitatively assessed in terms of activity,yielding behavior,and hardening response by combining neutron diffraction results with crystal plasticity predictions.The Mg-1 wt%Zn alloy displays distinct yielding and hardening behavior due to solid solution softening of prismatic〈a〉slip.Additionally,the dependence of extension twinning,in terms of the twinning volume fraction,on Zn content exhibits opposite trends under tensile and compressive loadings. 展开更多
关键词 Magnesium alloy Deformation behavior Solid solution Crystal plasticity modeling Neutron diffraction
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Thermoelectric Performance of CuInSe2‑ZnSe Solid Solution 认领 引用
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作者 Chengwei Sun Wang Li +6 位作者 Chengjun Li Yingchao Wei Wenyuan Ma Xin Li Qinghui Jiang Yubo Luo Junyou Yang 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2025年第5期823-830,共8页
CuInSe2 is an N-type diamond-like semiconductors thermoelectric candidate for power generation at medium temperature with its environmentally friendly and cost-effective properties.However,the intrinsic high therma... CuInSe2 is an N-type diamond-like semiconductors thermoelectric candidate for power generation at medium temperature with its environmentally friendly and cost-effective properties.However,the intrinsic high thermal conductivity of CuInSe2 limits the enhancement of its thermoelectric performance.Herein,we investigate the thermoelectric performance of N-type CuInSe2 materials by incorporating ZnSe through a solid solution strategy.A series of(CuInSe2)1-x(ZnSe)x(x=0.0,0.2,0.4,0.6,0.8,1.0)samples were synthesized,forming continuous solid solutions,while introducing minor porosity.ZnSe solid solution effectively reduces the lattice thermal conductivity of the CuInSe2 matrix at near-room temperatures,but has a weaker effect at higher temperatures.Due to the intrinsic low carrier concentration of the system,resulting in high resistivity,the maximum figure of merit(ZT)of(CuInSe2)0.8(ZnSe)0.2 reaches 0.08 at 773 K.Despite the relatively low ZT,the solid solution strategy proves effective in reducing the lattice thermal conductivity near-room temperature and offers potential for cost-effective thermoelectric materials. 展开更多
关键词 Thermoelectric CuInSe2 ZnSe Solid Solution
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Synergistic effect of infinite and finite solid solution enabling ultrathin Li-Cu-Ag alloy toward advanced Li metal anode 认领 引用 被引量：4
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作者 Xiao-Xiao Chen Hao Huang +6 位作者 Lin-Yun Yi Zi-Hao Wang Zhi-Cui Song Jian-Xiong Xing Chao-Hui Wei Ai-Jun Zhou Jing-Ze Li 《Rare Metals》 SCIE EI CAS CSCD 2025年第1期121-134,共14页
Ultrathin Li-rich Li-Cu binary alloy has become a competitive anode material for Li metal batteries of high energy density.However,due to the poor-lithiophilicity of the single skeleton structure of Li-Cu alloy,it has... Ultrathin Li-rich Li-Cu binary alloy has become a competitive anode material for Li metal batteries of high energy density.However,due to the poor-lithiophilicity of the single skeleton structure of Li-Cu alloy,it has limitations in inducing Li nucleation and improving electrochemical performance.Hence,we introduced Ag species to Li-Cu alloy to form a 30μm thick Li-rich Li-Cu-Ag ternary alloy(LCA)anode,with Li-Ag infinite solid solution as the active phase,and Cu-based finite solid solutions as three-dimensional(3D)skeleton.Such nano-wire networks with LiCu4 and CuxAgy finite solid solution phases were prepared through a facile melt coating technique,where Ag element can act as lithiophilic specie to enhance the lithiophilicity of built-in skeleton,and regulate the deposition behavior of Li effectively.Notably,the formation of CuxAgy solid solution can strengthen the structural stability of the skeleton,ensuring the geometrical integrity of Li anode,even at the fully delithiated state.Meanwhile,the Li-Ag infinite solid solution phase can promote the Li plating/stripping reversibility of the LCA anode with an improved coulombic efficiency(CE).The synergistic effect between infinite and finite solid solutions could render an enhanced electrochemical performance of Li metal batteries.The LCA|LCA symmetric cells showed a long lifespan of over 600 h with stable polarization voltage of 40 mV,in 1 mA·cm-2/1 mAh·cm-2.In addition,the full cells matching our ultrathin LCA anode with 17.2 mg·cm-2mass loading of LiFePO4 cathode,can continuously operate beyond 110 cycles at 0.5C,with a high capacity retention of 91.5%.Kindly check and confirm the edit made in the article title. 展开更多
关键词 Li alloy anode Solid solution Solution strengthening Lithiophilic skeleton Ternary alloy
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Investigation on Cu promotion effect on Ce-based solid solution-anchored Rh single atoms for three-way catalysis 认领 引用
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作者 Jianing He Xiao Wang +8 位作者 Zijian Wang Ruize Jiang Ke Wang Rui Zhang Huilin Wang Baokang Geng Hongyi Gao Shuyan Song Hongjie Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第2期546-550,共5页
The three-way catalyst(TWC),as a promising approach to control automobile exhaust emission,has been widely studied and applied.However,it still suffers from the high light-off temperature and poor stability.Herein,we ... The three-way catalyst(TWC),as a promising approach to control automobile exhaust emission,has been widely studied and applied.However,it still suffers from the high light-off temperature and poor stability.Herein,we synthesized a multicomponent catalyst Rh/Cu-CeSn by using Cu metal doping to modify the Ce-based solid solution,which exhibited good TWC catalytic performance:the light-off temperatures for CO,NO,and C3H6conversion are 172℃,266℃,and 193℃,respectively.Moreover,the catalyst still maintained good activity after 12 h of the continuous reaction under high-temperature conditions.The experiments and mechanism studies reveal that due to the redox pair Cu+/Cu2+,the Cu incorporation can effectively inhibit the Rh transition to the oxidation state and greatly enhance the catalytic activity and stability.This work provides a viable strategy for precise characteristic modulation of composite oxide supports during the fabrication of noble metal-based catalysts,which significantly reduces environmental pollution from energy applications. 展开更多
关键词 Three-way catalysts(TWC) Solid solution Co-precipitation Rhodium(Rh)catalyst Oxygen vacancies
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Low-dose X-ray induced long afterglow NIR luminescence from Cr3+doped Zn1-xCdxGa2O4spinel solid solutions 认领 引用
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作者 Tingting Zhao Wenzhi Sun +4 位作者 Shuya Wang Wei Meng Chunqing Fu Xiaoyan Fu Hongwu Zhang 《Journal of Rare Earths》 SCIE EI CAS CSCD 2025年第2期246-252,I0001,共7页
The low-dose X-ray induced long afterglow near infrared(NIR)luminescence from Cr3+doped Zn1-xCdxGa2O4spinel solid solutions was investigated.The structure analysis shows the good formation of Zn1-xCd... The low-dose X-ray induced long afterglow near infrared(NIR)luminescence from Cr3+doped Zn1-xCdxGa2O4spinel solid solutions was investigated.The structure analysis shows the good formation of Zn1-xCdxGa2O4spinel solid solutions,which possesses a cubic spinel structure with Fd3m space group.The formation of Zn1-xCdxGa2O4spinel solid solutions induces the obvious increase of long afterglow near infrared luminescence excited by low-dose X-ray,When the content of doped Cd2+reaches 0.1,the low-dose X-ray induced long afterglow NIR luminescence is the maximum.More importantly,only 5 s Xray irradiation can induce more than 6 h NIR afterglow emission,of which the afterglow luminescent intensity is still 5 times stronger than the background intensity after 6 h.The thermoluminescent results show that under the 5 s exposure of X-ray,the trap density of Zn0.9Cd0.1Ga2O4:Cr3+is much higher than that of ZnGa2O4:Cr3+.The replacement of Cd2+ions with large radius at Zn2+sites causes the increase of de fects and dislocations,which results in the obvious increase of trap co ncentrations.And the addition of high-z number elements Cd2+would enhance the X-ray absorption of the solid solutions,which thus can be easily excited by low-dose X-ray.Zn0.9Cd0.1Ga2O4:1%Cr3+solid solution is a potential candidate of lowdose X-ray induced long afterglow luminescent materials. 展开更多
关键词 Zn1-xCdxGa2O4:1%Cr3+ Phosphors Solid solutions X-ray induced long afterglow luminescence Rare earths
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Hydrogen production from dry reforming of methane,using CO2previously chemisorbed in the Li6Zn1-xNixO4solid solution 认领 引用
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作者 Yocelin B.González-González Fernando Plascencia-Hernández +1 位作者 Rubén Mendoza-Cruz Heriberto Pfeiffer 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2025年第3期535-550,共16页
Li6ZnO4was chemically modified by nickel addition,in order to develop different compositions of the solid solution Li6Zn1-xNixO4.These materials were evaluated bifunctionally;analyzing their CO2ca... Li6ZnO4was chemically modified by nickel addition,in order to develop different compositions of the solid solution Li6Zn1-xNixO4.These materials were evaluated bifunctionally;analyzing their CO2capture performances,aswell as on their catalytic properties for H2production via dry reforming of methane(DRM).The crystal structures of Li6Zn1-xNixO4solid solution samples were determined through X-ray diffraction,which confirmed the integration of nickel ions up to a concentration around 20 mol%,meanwhile beyond this value,a secondary phase was detected.These results were supported by XPS and TEM analyses.Then,dynamic and isothermal thermogravimetric analyses of CO2capture revealed that Li6Zn1-xNixO4solid solution samples exhibited good CO2chemisorption efficiencies,similarly to the pristine Li6ZnO4chemisorption trends observed.Moreover,a kinetic analysis of CO2isothermal chemisorptions,using the Avrami-Erofeev model,evidenced an increment of the constant rates as a function of the Ni content.Since Ni2+ions incorporation did not reduce the CO2capture efficiency and kinetics,the catalytic properties of thesematerialswere evaluated in the DRM process.Results demonstrated that nickel ions favored hydrogen(H2)production over the pristine Li6ZnO4phase,despite a second H2 production reaction was determined,methane decomposition.Thereby,Li6Zn1-xNixO4ceramics can be employed as bifunctional materials. 展开更多
关键词 Dry reforming of methane(DRM) CO2chemisorption H2production Solid solution Li6ZnO4
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Dispersion, solid solution, and covalent bond coupled to strengthen K4169/TiAl composite brazed joints: First-principles and experimental perspective 认领 引用
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作者 Liangliang Zhang Peng Li Honggang Dong 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第15期287-304,共18页
Ni/TiAl composite brazed joints could significantly reduce the aircraft’s weight.However,low interfacial adhesion,coarse and brittle-hard intermetallic compounds(IMCs)seriously limited the application of Ni/TiAl comp... Ni/TiAl composite brazed joints could significantly reduce the aircraft’s weight.However,low interfacial adhesion,coarse and brittle-hard intermetallic compounds(IMCs)seriously limited the application of Ni/TiAl composite joints in the next generation of aerospace applications.So enhanced K4169/TiAl composite joints were investigated by vacuum brazed with(Ni53.33Cr20B16.67Si10/Zr25Ti18.75Ta12.5Ni25Cu18.75)composite filler metal(CFM)designed based on cluster-plus-glue-atom model.The shear strength of the joint reached 485 MPa,comparable to the 491 MPa of TiAl substrate.The flat and brittle-hard diffusion reaction layer between Zones I and II was eliminated,simultaneously generating CrB4 dispersion strengthening due to the CFM developed with the interfacial solid-liquid space-time hysteresis effect.In Zones II and III,IMCs all transformed into Niss(Cr,Fe)[0–88],Niss(Ti,Al)[004],and Niss(Zr,Si)[11–2]of circular and oval shapes through isothermal solidification.Meanwhile,the residual stresses and hardness were distributed in reticulated cladding characteristics.Thereby,lattice distortion led to solid solution strengthening and increased plastic toughness through crack termination and bridging mechanisms,which inhibited dislocations from plugging and crack propagation.Various interfaces in ZoneⅣwere regulated into semi-and coherent interfaces.Ni3(Ti,Al)/(Ni,Ti,Al)and(Ni,Ti,Al)/AlNi2Ti were composed of higher interfacial bonding energy(2.771 J/m2,2.547 J/m2)and Ni-Ni covalent bonds.Interfacial covalent bonding and large interfacial bonding energy coupling strengthened Zone IV.Consequently,cracks initiated at the(Ni,Ti,Al)[013]/Ti3Al[010]and expanded rapidly into TiAl substrate.Therefore,applying this method to design CFMs and regulate the phase,grain morphology,and interface’s fine structure could provide new pathways for dissimilar hard-to-join metals. 展开更多
关键词 K4169/TiAl composite brazed joints Composite filler metal Dispersion strengthening Solid solution strengthening Covalent bond
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Effect of B2O3 and Na2B4O7 on phosphorus enrichment in Ca2SiO4–Ca3(PO4)2 solid solutions 认领 引用
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作者 Xin Ping Fang Zhang +2 位作者 Jun Peng Hong-tao Chang Shuang Liu 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2025年第6期1502-1513,共12页
To separate the phosphorus-containing phase from steel slag,the effects of B2O3and Na2B4O7on the enrichment of phosphorus-containing phases in Ca2SiO4–Ca3(PO4)2(C2S–C3P)solid solu... To separate the phosphorus-containing phase from steel slag,the effects of B2O3and Na2B4O7on the enrichment of phosphorus-containing phases in Ca2SiO4–Ca3(PO4)2(C2S–C3P)solid solution were comparatively analyzed through theoretical calculations and experimental investigations.The results indicate that the optimum reaction temperature between B2O3and C2S–C3P is 800℃.The phase compositions of C2S–C3P equilibrium system with 5 wt.%B2O3at 800℃ included Ca3(PO4)2,CaSiO3and Ca11B2Si4O22,among which the content of Ca3(PO4)2was the highest.For C2S–C3P with 5 wt.%Na2B4O7equilibrium system,Ca3(PO4)2,CaSiO3,Ca11B2Si4O22and Na2Ca2P2O8were independent at 390–690℃.Ca3(PO4)2and Ca2SiO4precipitated in the solid solution when the addition of B2O3was more than 6 wt.%,and the content of Ca3(PO4)2raised with the increase in the addition of B2O3.The main phases in the C2S–C3P solid solution with Na2B4O7were(Ca2SiO4)0.05[Ca3(PO4)2],Ca2SiO4and Na3Ca6(PO4)5at 650℃.And when the addition of Na2B4O7exceeded 6 wt.%,the content of Na3Ca6(PO4)5increased significantly.There was no precipitation of Ca3(PO4)2or boron-containing phase in the samples with Na2B4O7,but a small proportion of Ca3(PO4)2transformed into(Ca2SiO4)0.05[Ca3(PO4)2],and Ca2+was partially replaced by Na+to generate Na3Ca6(PO4)5.As a result,the temperature for Na2B4O7to enrich the phosphorus-containing phase in C2S–C3P solid solution was lower than that for B2O3.However,the grade of the phosphorus-containing phase for Na2B4O7was lower than that for B2O3. 展开更多
关键词 B2O3 Na2B4O7 Ca2SiO4-Ca3(PO4)2solid solution Phosphorus enrichment
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Structure, synthesis, and catalytic properties of nanosize cerium-zirconium-based solid solutions in environmental catalysis 认领 引用 被引量：29
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作者 Jixing Liu Zhen Zhao +1 位作者 Chunming Xu Jian Liu 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2019年第10期1438-1487,共50页
Nanosize cerium-zirconium solid solution(CZO)with a special fluorite structure has received an increasing research interest due to their remarkable advantages such as excellent oxygen storage capacity and great flexib... Nanosize cerium-zirconium solid solution(CZO)with a special fluorite structure has received an increasing research interest due to their remarkable advantages such as excellent oxygen storage capacity and great flexibility in their composition and structure.By partial metal(including rare earth,transition,alkaline earth or other metal)doping into CZO,the physicochemical properties of these catalytic materials can be controllable adjusted for the study of specific reactions.To date,nanosize CZO has been prepared by co-precipitation,sol-gel,surfactant-assisted approach,solution combustion,micro-emulsion,high energy mechanical milling,etc.The advent of these methodologies has prompted researchers to construct well-defined networks with customized micromorphology and functionalities.In this review,we describe not only the basic structure and synthetic strategies of CZO,but also their relevant applications in environmental catalysis,such as the purification for CO,nitrogen oxides(NOx),volatile organic compounds(VOC),soot,hydrocarbon(HC),CO2 and solid particulate matters(PM),and some reaction mechanisms are also summarized. 展开更多
关键词 Cerium-zirconium solid solution Synthesis Method Structure Environmental catalysis
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Optimization of both coercivity and knee-point magnetic field of Sm2Co17-type magnets via solid solution process 认领 引用 被引量：17
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作者 Shuai Wang Yikun Fang +6 位作者 Kuikui Song Xiaoyu Zhu Lei Wang Wei Sun Wei Pan Minggang Zhu Wei Li 《Journal of Rare Earths》 SCIE EI CAS CSCD 2020年第11期1224-1230,I0003,共7页
It is confirmed that phase homogenization is very important for improving the magnetic properties of 2:17-type Sm-Co sintered magnets,In this work,the influence of solid solution process on microstructure and magnetic... It is confirmed that phase homogenization is very important for improving the magnetic properties of 2:17-type Sm-Co sintered magnets,In this work,the influence of solid solution process on microstructure and magnetic properties of the Sm(CobalFe0.233Cu0.073Zr0.024)7.6 sintered magnets was systematically studied.With the solid-solution treating duration(tS)increasing from 0 to 4 h,intrinsic coercivity(Hcj)increases from 12.83 to 36.54 kOe,magnetic field at knee-point(Hknee)increases from2.76 to 19.14 kOe,and the maximum energy product increases from 19.79 to 29.48 MGOe.The electron probe microanalyzer results reveal that there mainly exist gray and dark regions besides"white"rare earth-rich phase,and the conte nt of Sm,Fe and Cu elements for the two kinds of regions changes a lot for the specimens,Furthermore,with tS increasing up to 4 h,the elements content deviation between the gray and dark regions becomes small gradually from 3.94 at%to 0.27 at%,7.66 at%to 0.21 at%and 7.27 at%to 0.16 at%for Sm,Fe and Cu elements,respectively.Moreover,transmission electron microscopy results show that the distribution of cell size is much more concentrated for aged specimens when tS is 4 h.It is also found that the Cu concentration at cell boundaries for the 4 h solid-solution treatment case shows relatively higher values and greater concentration gradient(1.94 at%m).It is verified that sufficient solution treatment duration is prerequisite to form these homogeneous microstructural features,which are the key points for obtaining both high Hcj and Hknee. 展开更多
关键词 Sm-Co magnets Solid solution process Coercivity Microstructure Cell size Rare earths
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Multi-solute solid solution behavior and its effect on the properties of magnesium alloys 认领 引用 被引量：18
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作者 Jun Wang Yuan Yuan +5 位作者 Tao Chen Liang Wu Xianhuan Chen Bin Jiang Jingfeng Wang Fusheng Pan 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2022年第7期1786-1820,共35页
The low-density magnesium(Mg)alloys are attractive for the application in aerospace,transportation and other weight-saving-required fields.The mechanical properties and corrosion properties of Mg alloys are the key-pr... The low-density magnesium(Mg)alloys are attractive for the application in aerospace,transportation and other weight-saving-required fields.The mechanical properties and corrosion properties of Mg alloys are the key-property issues for the wide application.It is surprising to find that the solid solution of alloying elements in theα-Mg phase can have multi-effects on the properties of Mg alloys,e.g.,solid solution strengthening,solid solution corrosion-resistance-enhancing,etc.Additionally,the alloy design theory of"solid solution strengthening and ductilizing"proposed by Pan and co-workers has attracted extensive attentions.It is promising that by selected proper multi-alloying-elements(with optimal ratio)solid solutioned in theα-Mg phase,the comprehensive properties of Mg alloys can be synergistically improved.In this work,the solid solution behavior of Mg alloys and the followed solid solution property-enhancing effects were reviewed.The mechanisms proposed recently by researchers for these solid solution property-enhancing behaviors were presented,and the related calculations and predictions were also described.It is shown the demonstrations of the fundamentals for the solid solution property-enhancing of Mg alloys,especially from the atomic inter-reaction aspects,still require elaborated characterization work and calculation work.Additionally,it could be expected that the multi-solute in Mg alloys can bring many possibilities,or,in another saying,"cocktail effects".With understanding the multi-solute interaction behavior and the corresponded solid solution property-enhancing effects,the good balanced high-performance Mg alloys can be developed. 展开更多
关键词 Mg alloys Solid solution Strength Ductility Corrosion-resistance
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Solid solution strategy modulated defects engineering of(Cr1-xVx)2AlC MAX phase toward superior electromagnetic wave absorption 认领 引用 被引量：16
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作者 Ji-Lin Gou Yu-Kai Chang +8 位作者 Shu Liu Peng-Hui Li Ping-Hao Cui Qian-Ku Hu Li-Bo Wang Xin Zhang Jun-Kai Wang Qi-Xun Xia Ai-Guo Zhou 《Rare Metals》 SCIE EI CAS CSCD 2024年第7期3205-3219,共15页
Defects engineering is an effective strategy for manipulating electromagnetic parameters and enhancing electromagnetic wave(EMW)absorption capacity.However,the relationship between them is not clear,especially in soli... Defects engineering is an effective strategy for manipulating electromagnetic parameters and enhancing electromagnetic wave(EMW)absorption capacity.However,the relationship between them is not clear,especially in solid solution structures.In this work,a series of(Cr1-xVx)2AlC MAX phase solid solutions with layered structure were prepared via tuning the ratio of Cr and V to explore their EMW absorption performance.The experimental results indicated that the doping of V atoms at the M-site could effectively regulate its impedance matching and EMW absorption properties by introducing appropriate numbers of defects in the crystal,such as twin boundaries,dislocations and lattice distortions.Among them,if Cr:V=3:1,Cr1.5V0.5AlC,as radar absorption materials,could reach a strong reflection loss of-51.8 dB at the frequency of 12.8 GHz under an ultra-thin thickness of 1.3 mm.The reflection loss value could attain-10 dB in a wide frequency range of 2.7-18 GHz and thickness range of 1-5 mm.In addition,after high temperature and acid-alkali immersion treatment,this sample still had good EMW absorption capability,and the effective absorption bandwidth was enhanced from 2.3 to 2.6 GHz after concentrated acid immersion or 3.1 GHz after concentrated alkali immersion.This work has great reference significance for the research and development of high-performance MAX-based EMW absorption materials in harsh environments. 展开更多
关键词 MAX phases Solid solution Defects engineering Electromagnetic wave absorption Harsh environments
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