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Influence of Ti on ternary eutectic phase structure of Zn-6Al-3Mg coating alloy under rapid cooling condition 认领 引用
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作者 Yao Liu Jing-Ke Dai +3 位作者 Qin Luo Wen-Jun Xu Yuan-Yuan Yan Guang-Xin Wu 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第6期40-55,共16页
The influence of 0.1 wt.%Ti and Ti/B on Zn-6 wt.%Al-3 wt.%Mg coating alloy during rapid cooling(50-75℃/s)was investigated.The results demonstrate a significant change in the microstructure of the alloy upon the intro... The influence of 0.1 wt.%Ti and Ti/B on Zn-6 wt.%Al-3 wt.%Mg coating alloy during rapid cooling(50-75℃/s)was investigated.The results demonstrate a significant change in the microstructure of the alloy upon the introduction of Ti or Ti/B.Al dendrites undergo a transition from slender to short and coarse,and more Al dendrites are produced.The ternary eutectic Zn/Al/Mg2Zn11phase is no longer observed,while only the ternary eutectic Zn/Al/MgZn2phase is present.The addition of Ti results in the formation of a precipitated phase consisting of TiAl3and when Ti/B is added,both TiAl3and TiB2 phases are observed to precipitate.The solid solubility of Mg in Zn can be influenced by Ti,as demonstrated through composition profile,thermodynamic calculation,and diffusion couple experiments.Zn phase nucleates as the priority phase when the eutectic phase precipitates.Due to the significant supercooling,rapid growth of Zn phase occurs,accompanied by solid dissolution of some Mg and Al into Zn phase because of insufficient time for diffusion outside.The interface of Zn phase exhibits a low concentration of Mg,resulting in the formation of Mg2Zn11nuclei.After the solid solution of Ti in Zn phase,more Mg and Al will be discharged,and MgZn2nuclei will be generated at the higher concentration of Mg at the interface of Zn phase.By elucidating the solidification mechanism,a deeper comprehension of the role of Ti in Zn-6Al-3Mg alloy can be attained. 展开更多
关键词 Zn-6 wt.%Al-3 wt.%Mg coating alloy Ti Mg2Zn11phase MgZn2phase Solid solubility Diffusion couple
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Oxidation behavior of C/C composites with SiC/ZrSiO_4-SiO_2 coating 认领 引用 被引量：6
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作者 李杨 肖鹏 +2 位作者 李专 罗威 周伟 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2017年第2期397-405,共9页
A SiC/ZrSiO4？SiO2 （SZS） coating was successfully fabricated on the carbon/carbon （C/C） composites by pack cementation, slurry painting and sintering to improve the anti-oxidation property and thermal shock resist... A SiC/ZrSiO4？SiO2 （SZS） coating was successfully fabricated on the carbon/carbon （C/C） composites by pack cementation, slurry painting and sintering to improve the anti-oxidation property and thermal shock resistance. The anti-oxidation properties under different oxygen partial pressures （OPP） and thermal shock resistance of the SZS coating were investigated. The results show that the SZS coated sample under low OPP, corresponding to the ambient air, during isothermal oxidation was 0.54% in mass gain after 111 h oxidation at 1500 ° C and less than 0.03% in mass loss after 50 h oxidation in high OPP, corresponding to the air flow rate of 36 L/h. Additionally, the residual compressive strengths （RCS） of the SZS coated samples after oxidation for 50 h in high OPP and 80 h in low OPP remain about 70% and 72.5% of those of original C/C samples, respectively. Moreover, the mass loss of SZS coated samples subjected to the thermal cycle from 1500 ° C in high OPP to boiling water for 30 times was merely 1.61%. 展开更多
关键词 C/C composite SiC/ZrSiO4-SiO2 coating oxygen partial pressure anti-oxidation thermal shock residual compressive strength
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Preparation of Ti_2AlC MAX Phase Coating by DC Magnetron Sputtering Deposition and Vacuum Heat Treatment 认领 引用 被引量：13
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作者 Zongjian Feng Peiling Ke Aiying Wang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2015年第12期1193-1197,共5页
Due to the excellent corrosion resistance and high irradiation damage resistance,Ti 2AlC MAX phase is considered as a candidate for applications as corrosion resistant and irradiation resistant protective coating.MAX ... Due to the excellent corrosion resistance and high irradiation damage resistance,Ti 2AlC MAX phase is considered as a candidate for applications as corrosion resistant and irradiation resistant protective coating.MAX phase coatings can be fabricated through firstly depositing a coating containing the three elements M,A,and X close to stoichiometry of the MAX phases using physical vapor deposition,followed by heat treatment in vacuum.In this work,Ti-Al-C coating was prepared on austenitic stainless steels by reactive DC magnetron sputtering with a compound Ti （50）Al （50） target,and CH4 used as the reactive gas.It was found that the as-deposited coating is mainly composed of Ti 3AlC antiperovskite phase with supersaturated solid solution of Al.Additionally,the ratio of Ti/Al remained the same as that of the target composition.Nevertheless,a thicker thermally grown Ti 2AlC MAX phase coating was obtained after being annealed at 800℃ in vacuum for 1 h.Meanwhile,the ratio of Ti/Al became close to stoichiometry of Ti 2AlC MAX phases.It can be understood that owing to the higher activity of Al,it diffused quickly into the substrate during annealing,and then more stable Ti 2AlC MAX phases transformed from the Ti 3AlC antiperovskite phase. 展开更多
关键词 Ti2AlC MAX phase Coating Magnetron sputtering Microstructure
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Ti3C2Tx MXene-functionalized Hydroxyapatite/Halloysite nanotube filled poly-(lactic acid)coatings on magnesium:In vitro and antibacterial applications 认领 引用 被引量：2
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作者 Mehmet Topuz Yuksel Akinay +1 位作者 Erkan Karatas Tayfun Cetin 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2024年第9期3758-3771,共14页
Magnesium(Mg)stands out in temporary biomaterial applications due to its biocompatibility,biodegradability,and low Young’s modulus.However,controlling its corrosion through next-generation polymer-based functional co... Magnesium(Mg)stands out in temporary biomaterial applications due to its biocompatibility,biodegradability,and low Young’s modulus.However,controlling its corrosion through next-generation polymer-based functional coatings is crucial due to the rapid degradation behavior of Mg.In this study,the function of 2D lamellar Ti3C2Tx(MXene)in Hydroxyapatite(HA)and Halloysite nanotube(HNT)hybrid coatings in biodegradable poly-(lactic acid)(PLA)was investigated.The morphological and structural characterizations of the coatings on Mg were revealed through HRTEM,XPS,SEM-EDX,XRD,FTIR,and contact angle analysesests.Electrochemical in vitro corrosion tests(OCP,PDS,and EIS-Nyquist)were conducted for evaluate corrosion resistance under simulated body fluid(SBF)conditions.The bioactivity of the coatings in SBF have been revealed in accordance with the ISO 23,317 standard.Finally,antibacterial disk diffusion tests were conducted to investigate the functional effect of MXene in coatings.It has been determined that the presence of MXene in the coating increased not only surface wettability(131°,85°,77°,and 74°for uncoated,pH,PHH,and PHH/MXene coatings,respectively)but also increased corrosion resistance(1857.850,42.357,1.593,and 0.085×10-6,A/cm2 for uncoated,pH,PHH,and PHH/MXene coatings,respectively).It has been proven that the in vitro bioactivity of PLA-HA coatings is further enhanced by adding HNT and MXene,along with SEM morphologies after SBF.Finally,2D lamellar MXene-filled coating exhibits antibacterial behavior against both E.coli and S.aureus bacteria. 展开更多
关键词 Magnesium Pla coating Ti3c2tx mxene In-vitro bioactivity Disk diffusion
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The synergistic role of Ti microparticles and CeO2 nanoparticles in tailoring microstructures and properties of high-quality Ni matrix nanocomposite coating 认领 引用 被引量：2
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作者 Lianbo Wang Shilong Xing +4 位作者 Zizhen Shen Huabing Liu Chuanhai Jiang Vincent Ji Yuantao Zhao 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第10期182-193,共12页
In current work,Ni-Ti-CeO2 nanocomposite coatings were achieved by co-adding Ti microparticles and CeO2 nanoparticles.Designed experiments and COMSOL computer simulation were applied to reveal the synergistic ro... In current work,Ni-Ti-CeO2 nanocomposite coatings were achieved by co-adding Ti microparticles and CeO2 nanoparticles.Designed experiments and COMSOL computer simulation were applied to reveal the synergistic role of Ti microparticles and CeO2 nanoparticles in tailoring the spatial microstructures and properties of Ni-Ti-CeO2 nanocomposite coating.Unilaterally,the conductive Ti microparticles conducted the growth behavior of Ni grains by current density concentration,distorting electronic feld lines and heterogeneous nucleation.Individual domains consisting of inner nanograins and outer radial columnar grains surrounded Ti microparticles,where Ti microparticles acted as seeds.Ti microparticles tended to be aggregated,leading to spatial heterogeneity of microstructures.Ni deposits buried the Ti microparticles in forms of“covering model”,contributing to the formation of inside voids and rough surface and aggregation of Ti microparticles;on the other hand,the non-conductive CeO2microparticles hardly changed the distribution of current density and electronic feld lines on the cathode surface.Ni deposits buried the CeO2microparticle in forms of“stacking model”,avoiding the inside voids and aggregation of particles.The incorporation of CeO2microparticle brought in microstructure evolutions only on its top side without disturbing the growth behavior of Ni grains on its lateral side or bottom,suggesting the limited effects.This was correlated with the presence of current concentration above the CeO2 microparticle at the last stage of burying CeO2 microparticle.The co-addition of Ti microparticles and CeO2 nanoparticles into Ni deposits exploited the complementary action of the two particles,which gave birth to satisfed spatial microstructures and improved hardness.Ti microparticles took major responsibility for microstructure evolutions,while the CeO2 nanoparticles were mainly in charge of the microstructure homogeneity. 展开更多
关键词 Nanocomposite coating CeO2nanoparticle Ti microparticles Grain growth behavior COMSOL computer simulation Spatial microstructure and spatial hardness
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Hot Corrosion Behavior of SiO_2–Al_2O_3–Glass Composite Coating on Ti–47Al–2Cr–2Nb Alloy: Diffusion Barrier for S and Cl 认领 引用 被引量：3
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作者 Wen-Bo Li Lan-Lan Liu +2 位作者 Ying-Fei Yang Sheng-Long Zhu Fu-Hui Wang 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2019年第5期599-606,共8页
Type Ⅰ hot corrosion behavior of SiO_2-Al_2O_3-glass composite coating based on Ti-47 Al-2 Cr-2 Nb substrate was investigated in the mixture salt of 25 wt%NaCl + 75 wt%Na_2SO_4 at 850 °C. The results showed that... Type Ⅰ hot corrosion behavior of SiO_2-Al_2O_3-glass composite coating based on Ti-47 Al-2 Cr-2 Nb substrate was investigated in the mixture salt of 25 wt%NaCl + 75 wt%Na_2SO_4 at 850 °C. The results showed that there was a bidirectional ion exchange between composite coating and the film of mixed salts, and the sodium ion in the molten salts penetrated into the glass matrix of composite coating, while the potassium ion in the glass matrix dissolved into the molten salts. A decrease in hot corrosion rate was achieved for the coated alloy in comparison with the bared substrate due to the composite coating acting as a diffusion barrier to sulfur and chlorine and preventing the molten salts from diffusing to the coating/alloy interface during the hot corrosion exposure. Additionally, the composite coating decreased the oxygen partial pressure at the coating/alloy interface and promoted the selective oxidation of Al to form a protective Al_2O_3 layer. 展开更多
关键词 Corrosion Composite coating Ti–47Al–2Cr–2Nb alloy Diffusion
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Influencing mechanism of laser specific energy on tribological properties of high performance Ti−Al/WC composite coating 认领 引用
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作者 Xin-meng SUI Yi-tao WENG +2 位作者 Jian LU Lin ZHANG Wei-ping ZHANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2025年第10期3368-3382,共15页
Laser specific energy significantly impacts the quality of composite coatings.Ti−Al/WC coatings were prepared on the TC21 alloy through laser cladding with specific energy ranging from 66.7 to 133.3 J/mm2.The resul... Laser specific energy significantly impacts the quality of composite coatings.Ti−Al/WC coatings were prepared on the TC21 alloy through laser cladding with specific energy ranging from 66.7 to 133.3 J/mm2.The results indicate that the composite coatings primarily comprised Ti2AlC,α2-Ti3Al,γ-TiAl,TiC,and W phases.A gradual increase in the relative intensity of the diffraction peaks of Ti2AlC,α2-Ti3Al,and TiC appeared with the increase of specific energy.When the specific energy was 116.7 J/mm2,the Ti−Al/WC coated alloy achieved a maximum micro-hardness of HV0.2766.3,which represented an increase of 1.96 times compared with TC21 alloy,and the minimum wear rate decreased dramatically.Much improvement in tribological properties was attained through the fine-grained strengthening of the(α2+γ)matrix and the dispersion strengthening of self-lubricating Ti2AlC and intertwining TiC.This study provides valuable insights for the development of high-performance Ti−Al composite coatings. 展开更多
关键词 laser specific energy Ti−Al/WC coating TC21 alloy Ti2AlC tribological properties
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RuO_2-IrO_2/Ti阳极电催化降解偶氮染料甲基橙模拟废水 认领 引用 被引量：10
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作者 谢实涛 孙南南 +2 位作者 张传雷 陈英文 沈树宝 《环境工程学报》 CAS CSCD 北大核心 2015年第4期1659-1662,共4页
以自制Ti基Ru O2-Ir O2镀层形稳电极为阳极,采用电催化氧化处理偶氮染料甲基橙模拟废水。以硫酸钠为支持电解质,在自然p H条件下分别考察了电解时间、电极间距、电流密度和电解质浓度等因素对甲基橙去除率的影响,并分析其原因。实验结... 以自制Ti基Ru O2-Ir O2镀层形稳电极为阳极,采用电催化氧化处理偶氮染料甲基橙模拟废水。以硫酸钠为支持电解质,在自然p H条件下分别考察了电解时间、电极间距、电流密度和电解质浓度等因素对甲基橙去除率的影响,并分析其原因。实验结果表明,在自然p H、电极间距为1.0 cm、电流密度为30.0 m A/cm2、电解质硫酸钠浓度为20.0 g/L、电解1.0h,甲基橙去除率高达90.0%以上。因此,电催化氧化法作为一种高效、简便的染料废水处理技术,具有一定的应用潜力。 展开更多
关键词 电催化氧化 RuO2-IrO2/Ti电极 偶氮染料 甲基橙
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Ti/RuO2-SnO2-TiO2涂层电极电催化氧化苯酚废水研究 认领 引用 被引量：8
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作者 刘宇程 梁庆玲 +2 位作者 杨冰 刘骞 涂雯雯 《安全与环境学报》 CAS CSCD 北大核心 2018年第2期683-690,共8页
采用热分解法将SnO2掺杂于RuO2-TiO2涂层中,制得性能高效的Ti/RuO2-SnO2-TiO2阳极氧化电极。以该自制电极为阳极、钛板为阴极构成电催化氧化体系,对模拟苯酚废水进行电催化氧化试验。利用高效液相色谱探讨了苯酚废水溶液在该体系中的电... 采用热分解法将SnO2掺杂于RuO2-TiO2涂层中,制得性能高效的Ti/RuO2-SnO2-TiO2阳极氧化电极。以该自制电极为阳极、钛板为阴极构成电催化氧化体系,对模拟苯酚废水进行电催化氧化试验。利用高效液相色谱探讨了苯酚废水溶液在该体系中的电催化氧化反应历程,并推断出氧化降解途径。采用SEM和XRD表征电极涂层结构和形貌,循环伏安法测试电极电化学性能。通过单因素试验考察反应时间、电流密度（CD）、电极间距、Na2SO4电解质浓度、苯酚质量浓度、pH值五个因素对电催化氧化试验的影响,结果表明：在反应时间为240 min、电流密度为102.6 mA/cm-2、电极间距为1.5 cm、电解质浓度为0.5 mol/L、苯酚质量浓度为300 mg/L、pH=5的最佳试验条件下,苯酚的降解率达到98%以上,COD的去除率达到90%以上。 展开更多
关键词 环境工程学 Ti/RuO2-SnO2-TiO2 苯酚 电催化氧化 中间产物
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Ti/RuO2-IrO2电极电化学方法降解溶液中TBBPA及其降解机理探究 认领 引用 被引量：6
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作者 李慧媛 高丁 +2 位作者 史江红 徐泽升 牛军峰 《环境科学学报》 CAS CSCD 北大核心 2017年第2期642-650,共9页
四溴双酚A(TBBPA)是世界上产量和用量最大的溴代阻燃剂之一,在河流、底泥及污水中持久存在,严重威胁环境和人体健康.探讨了阳极为Ti/RuO_2-IrO_2电极的电化学法对溶液中TBBPA的降解效率,并考察了电流密度(5~20 m A·cm-2)、初始p... 四溴双酚A(TBBPA)是世界上产量和用量最大的溴代阻燃剂之一,在河流、底泥及污水中持久存在,严重威胁环境和人体健康.探讨了阳极为Ti/RuO_2-IrO_2电极的电化学法对溶液中TBBPA的降解效率,并考察了电流密度(5~20 m A·cm-2)、初始pH值(3~11)、极板间距(1~3 cm)及电解质浓度(1~40 mmol·L-1)对降解速率的影响.研究结果表明,TBBPA的降解遵循一级动力学方程,在溶液初始浓度为5 mg·L-1、电流密度为10 mA·cm-2、电解质浓度为5 mmol·L-1及极板间距为1 cm的条件下,60 min后TBBPA的降解率可达97.2%,且降解速率常数和半衰期分别为0.060 min-1和11.6 min,能量消耗为105.3 k Wh·m-3.同时运用HPLC-MS/MS检测出中间产物双酚A(BPA)和2-溴苯酚,并推断其降解途径主要为在羟基自由基(·OH)作用下连续的脱溴过程中,苯环与异丙基之间的C—C键断裂生成BPA和2-溴苯酚.电化学法是一种高效的、有潜力的降解难降解有机污染物的方法,本文将为今后实际废污水中TBBPA的去除提供基础数据和技术参数. 展开更多
关键词 电化学 四溴双酚A Ti/RuO2-IrO2 电解质 机理
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钴酸镧掺杂Ti/RuO_2电极材料电化学性能研究 认领 引用 被引量：4
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作者 张志刚 周扬杰 +2 位作者 李帅 林琅 蒋晓瑜 《湖南师范大学自然科学学报》 CAS 北大核心 2019年第1期70-75,共6页
采用热分解法制备了不同比例钴酸镧掺杂Ti/RuO_2电极材料。通过扫描电镜(SEM)、能谱分析(EDS)、X射线粉末衍射(XRD)等分析方法表征电极涂层的物相结构与形貌特征,采用电化学测量表征电极的物理化学性能。分析表明电极涂层由不规则的颗... 采用热分解法制备了不同比例钴酸镧掺杂Ti/RuO_2电极材料。通过扫描电镜(SEM)、能谱分析(EDS)、X射线粉末衍射(XRD)等分析方法表征电极涂层的物相结构与形貌特征,采用电化学测量表征电极的物理化学性能。分析表明电极涂层由不规则的颗粒组成,颗粒间有一定的孔隙,掺杂钴酸镧电极涂层含有Ti,Ru,La及Co金属元素,相结构主要为金红石相,掺杂钴酸镧电极涂层的晶粒较小,不同掺杂量对晶粒大小影响不大。电化学研究表明,电极具有典型的钌氧化物所具备的电化学性能,掺杂钴酸镧电极的电化学面积较大,电极的可逆性能得到改善。所制备的电极具有大致相同的析氧电位(1.19 V vs. SCE),随着钴酸镧掺杂量的增多,Tafel斜率依次减小,表明掺杂钴酸镧电极的活性较高,且掺杂钴酸镧后电极强化寿命得到显著提高。 展开更多
关键词 Ti/RuO2电极 钴酸镧掺杂 循环伏安法 Tafel法 强化寿命
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RuO2-IrO2-SnO2/Ti阳极电催化氧化苯酚的研究 认领 引用 被引量：14
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作者 孙南南 谢实涛 +2 位作者 李凯 陈英文 沈树宝 《环境污染与防治》 CAS CSCD 北大核心 2015年第2期38-41,共4页
以RuO2-IrO2-SnO2/Ti钛网电极为阳极,RuO2-IrO2/Ti钛网电极为阴极,构建了电催化氧化体系,同时以苯酚为底物、硫酸钠为电解质,考察了不同pH、极板间距、电流密度和苯酚初始浓度对苯酚去除率的影响。结果表明,在pH为6.5、极板间距为1.0cm... 以RuO2-IrO2-SnO2/Ti钛网电极为阳极,RuO2-IrO2/Ti钛网电极为阴极,构建了电催化氧化体系,同时以苯酚为底物、硫酸钠为电解质,考察了不同pH、极板间距、电流密度和苯酚初始浓度对苯酚去除率的影响。结果表明,在pH为6.5、极板间距为1.0cm、电流密度为50mA/cm2、苯酚初始质量浓度为1 000mg/L的最佳实验条件下,取硫酸钠质量浓度为20g/L的苯酚模拟废水250mL,120min时苯酚去除率可以达到98.4%。 展开更多
关键词 电催化氧化 RuO2-IrO2-SnO2/Ti阳极苯酚pH电流密度
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固体超强酸SO_42-/TiO_2-SiO_2催化α-蒎烯合成龙脑 认领 引用 被引量：5
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作者 王鹤林 蒋丽红 +2 位作者 徐可 王亚明 焦星星 《化学工程》 CAS CSCD 北大核心 2017年第11期7-11,28,共5页
采用溶胶凝胶法制备了固体超强酸SO_42-/TiO_2-SiO_2催化剂,用XRD,XPS和NH_3-TPD对其结构进行表征与分析,结果表明:该催化剂为非晶态结构,具有超强酸位。以α-蒎烯,草酸的酯化皂化反应为探针,首先研究了Ti/Si摩尔比、硫酸浸渍浓度对S... 采用溶胶凝胶法制备了固体超强酸SO_42-/TiO_2-SiO_2催化剂,用XRD,XPS和NH_3-TPD对其结构进行表征与分析,结果表明:该催化剂为非晶态结构,具有超强酸位。以α-蒎烯,草酸的酯化皂化反应为探针,首先研究了Ti/Si摩尔比、硫酸浸渍浓度对SO_42-/TiO_2-SiO_2催化性能的影响,得到适宜的SO_42-/TiO_2-SiO_2催化剂制备条件为:Ti/Si摩尔比1∶3,硫酸浸渍浓度1.5 mol/L。以适宜条件下制备的SO_42-/TiO_2-SiO_2为催化剂,研究了工艺条件对合成龙脑的反应的影响,得到适宜的工艺条件为反应时间7 h,反应温度75℃,催化剂用量为α-蒎烯的6%,n(α-蒎烯)∶n(草酸)=1∶0.4。在此条件下,α-蒎烯的转化率达到100%,龙脑的收率可达58.14%。该催化剂重复使用5次后,催化活性无明显下降。SO_42-/TiO_2-SiO_2固体超强酸显示出良好的催化活性和稳定性。 展开更多
关键词 固体超强酸 SO4^2-/Ti O2-SiO2 催化 酯化-皂化 龙脑 稳定性
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Ti/RuO2-IrO2-TiO2电极电解产生活性氯 认领 引用 被引量：4
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作者 窦孟然 魏新 +1 位作者 郦和生 任志峰 《化工环保》 CAS CSCD 北大核心 2020年第6期645-649,共5页
采用电解法产生活性氯,降解废水中的有机物。考察了活性氯产生量的影响因素,并对Ti/RuO2-IrO2-TiO2电极电解实际含氯废水的处理效果进行了研究。实验结果表明:通过增加Cl-浓度和电流密度、减少SO42-浓度和极板间距、降低电解温度的方法... 采用电解法产生活性氯,降解废水中的有机物。考察了活性氯产生量的影响因素,并对Ti/RuO2-IrO2-TiO2电极电解实际含氯废水的处理效果进行了研究。实验结果表明:通过增加Cl-浓度和电流密度、减少SO42-浓度和极板间距、降低电解温度的方法能够提高活性氯产生量,从而提高电极降解有机物的效果;对于Cl-浓度为0.005 mol/L、COD为49 mg/L的废水,使用Ti/RuO2-IrO2-TiO2电极,在极板间距为0.5 cm、电解温度为20℃、电流密度为20 mA/cm^2、初始pH为8.0的条件下电解处理60 min,废水BOD5/COD值由0.04提高到0.25,COD降至24 mg/L,达到DB 11/307—2013《水污染综合排放标准》中排入地表水体污染物B类排放限值(COD≤30 mg/L)的要求。 展开更多
关键词 Ti/RuO2-IrO2-TiO2电极 活性氯 废水 有机物
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Phenol Wastewater Degradation by Electrocatalytic Oxidation with RuO_2-IrO_2-SnO_2/Ti Anodes in the High Gravity Field 认领 引用 被引量：4
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作者 Gao Jing Yan Junjuan +2 位作者 Liu Youzhi Zhang Dongming Chen Lijia 《China Petroleum Processing & Petrochemical Technology》 CAS 2018年第4期75-81,共7页
A novel high gravity multi-concentric cylinder electrodes-rotating bed(MCCE-RB) was developed for the electrocatalytic degradation of phenol wastewater in order to enhance the mass transfer with the self-made RuO_2-Ir... A novel high gravity multi-concentric cylinder electrodes-rotating bed(MCCE-RB) was developed for the electrocatalytic degradation of phenol wastewater in order to enhance the mass transfer with the self-made RuO_2-IrO_2-SnO_2/Ti anodes. The influences of electric current density, inlet liquid circulation flowrate, high gravity factor, sodium chloride concentration,and initial pH value on phenol degradation efficiency were investigated, with the optimal operating conditions determined. The results showed that under the optimal operating conditions covering a current density of 35 mA/cm^2, an inlet liquid circulation flowrate of 48 L/h, a high gravity factor of 20, a sodium chloride concentration of 8.5 g/L, an initial pH value of 6.5, a reaction time of 100 min, and an initial phenol concentration of 500 mg/L, the efficiency for removal of phenol reached 99.7%, which was improved by 10.4% as compared to that achieved in the normal gravity field. The tendency regarding the change in efficiency for removal of phenol, total organic carbon(TOC), and chemical oxygen demand(COD)over time was studied. The intermediates and degradation pathway of phenol were deduced by high performance liquid chromatography(HPLC). 展开更多
关键词 high gravity RuO2-IrO2-SnO2/Ti anode electrocatalytic oxidation phenol wastewater degradation pathway
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热氧化法制备Ti/RuO_2-TiO_2-IrO_2电极及处理亚甲基蓝废水 认领 引用 被引量：3
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作者 魏婕 黄胜 +1 位作者 宋鹏程 罗洁 《环境工程学报》 CAS CSCD 北大核心 2016年第3期1289-1294,共6页
采用热氧化法制备Ti/RuO_2-TiO_2-IrO_2钛基氧化物材料,通过SEM、XRD、XRF等方法对制备物形貌和结构进行表征分析,用该涂层材料为阳极,不锈钢为阴极,活性炭颗粒为粒子电极构成电解系统处理亚甲基蓝模拟废水。结果表明,电解时间60 min时... 采用热氧化法制备Ti/RuO_2-TiO_2-IrO_2钛基氧化物材料,通过SEM、XRD、XRF等方法对制备物形貌和结构进行表征分析,用该涂层材料为阳极,不锈钢为阴极,活性炭颗粒为粒子电极构成电解系统处理亚甲基蓝模拟废水。结果表明,电解时间60 min时,该装置对亚甲基蓝脱色率达到87.83%,COD去除率达到74.45%,脱色率符合表观一级反应动力学规律。将Ti/RuO_2-TiO_2-IrO_2电极与其他常用电极对MB废水的降解效果进行比较分析,该电极对废水脱色率高于其他电极。 展开更多
关键词 Ti/RuO2-TiO2-IrO2电极 亚甲基蓝 三维电极 电解
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Ti/RuO2-ZrO2电极电解处理焦化废水生化出水 认领 引用 被引量：3
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作者 孙岩柏 常鑫 +2 位作者 李卫平 王建国 于玲红 《水处理技术》 CAS CSCD 北大核心 2020年第4期111-115,共5页
采用热分解法制备了Ti/Ru O2-Zr O2钛基金属氧化物涂层电极,利用扫描电镜、X射线衍射仪等方法对电极的形貌结构和金属涂层物相进行了表征,并以该涂层电极为阳极,经预处理的钛板作为阴极构建了电化学催化反应发生体系以处理焦化废水生化... 采用热分解法制备了Ti/Ru O2-Zr O2钛基金属氧化物涂层电极,利用扫描电镜、X射线衍射仪等方法对电极的形貌结构和金属涂层物相进行了表征,并以该涂层电极为阳极,经预处理的钛板作为阴极构建了电化学催化反应发生体系以处理焦化废水生化出水。结果表明,在电流密度10 m A/cm^2、p H为7、电解时间60 min、反应温度25℃的优化条件下,焦化废水生化出水经电解处理后COD去除率可达96.2%,TOC去除率达87.0%,UV254大幅下降,原水中杂环类和环烷烃类有机物可降解为单环及简单链状烃类。 展开更多
关键词 Ti/RuO2-ZrO2电极 焦化废水生化出水 电化学 色谱-质谱联用
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IrO_2-MnO_2中间层Ti/RuO_2-TiO_2-SnO_2电极制备及性能 认领 引用 被引量：7
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作者 刘晓军 刘贵昌 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2012年第1期54-57,共4页
通过热分解法制备了含IrO2-MnO2中间层Ti/RuO2-TiO2-SnO2电极,采用SEM、EDX、XRD、CV等检测方法对中间层进行表征,同时采用强化加速寿命试验对电极电化学稳定性进行表征。结果表明:450℃时前躯体完全氧化并形成固溶体,制备的中间层晶粒... 通过热分解法制备了含IrO2-MnO2中间层Ti/RuO2-TiO2-SnO2电极,采用SEM、EDX、XRD、CV等检测方法对中间层进行表征,同时采用强化加速寿命试验对电极电化学稳定性进行表征。结果表明:450℃时前躯体完全氧化并形成固溶体,制备的中间层晶粒细小,表面结构致密,电化学孔隙率小。添加中间层使Ti/RuO2-TiO2-SnO2电极强化寿命由未加中间层的7.5h提高到995.8h,远高于国家标准20h。 展开更多
关键词 Ti/RuO2-TiO2-SnO2电极 IrO2-MnO2中间层 电化学稳定性
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TiB_2基RuO_2+TiO_2涂层的电催化性能 认领 引用 被引量：2
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作者 王福 竺培显 +1 位作者 周生刚 曹勇 《材料研究学报》 EI CAS CSCD 北大核心 2014年第8期610-614,共5页
用磁控溅射法在钛基体表面溅射TiB2中间层,以此为基体用热分解法制备了(Ru,Ti)氧化物涂层钛电极,用SEM、XRD、电化学工作站等手段对样品的性能和结构进行了表征。结果表明,含TiB2中间层的钛阳极表面涂层具有非连续状裂纹结构,钛基体和... 用磁控溅射法在钛基体表面溅射TiB2中间层,以此为基体用热分解法制备了(Ru,Ti)氧化物涂层钛电极,用SEM、XRD、电化学工作站等手段对样品的性能和结构进行了表征。结果表明,含TiB2中间层的钛阳极表面涂层具有非连续状裂纹结构,钛基体和氧化物涂层的界面呈现紧密结合的状态,其电催化析氯性能优于传统钛阳极。选用TiB2中间层作为催化电极的载体,可改善基体和氧化物涂层的结合,延缓涂层的脱落,可避免基体和涂层间生成TiO2电阻膜,延缓涂层的失效;加入TiB2中间层可降低内阻,改善电子的传输能力,降低析氯电位,提高电极的催化活性和节能降耗。 展开更多
关键词 复合材料 Ti/TiB2基体电极材料 RuO2-TiO2涂层 热分解法 电化学性能
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Ti/RuO2-IrO2阳极在碱性体系的失效行为 认领 引用 被引量：3
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作者 景海龙 杨泽坤 +3 位作者 杨海涛 胡超权 俞小花 李荣兴 《有色金属工程》 CAS 北大核心 2023年第3期23-30,共8页
以Ti/RuO2-IrO2阳极为研究对象,对其在碱性析氧条件下的主要失效机制进行了深入的研究。利用X射线衍射仪(XRD)、热场发射扫描电子显微镜(SEM)及能谱(EDS)分析其失效前后的物相和形貌变化,利用标准强化电解寿命试验、电化学分析等... 以Ti/RuO2-IrO2阳极为研究对象,对其在碱性析氧条件下的主要失效机制进行了深入的研究。利用X射线衍射仪(XRD)、热场发射扫描电子显微镜(SEM)及能谱(EDS)分析其失效前后的物相和形貌变化,利用标准强化电解寿命试验、电化学分析等手段探讨了Ti/RuO2-IrO2涂层阳极在碱性环境中的性能。结果表明,碱性体系中的强化电解并不是均匀的,可分为4个阶段;电极在碱性体系下的腐蚀是由外向内的,Ti/RuO2-IrO2涂层钛阳极的电解失效机制是物理作用和化学作用的叠加,物理变化主要表现为涂层变薄、裂纹加宽甚至剥落,化学变化表现为涂层中的贵金属氧化物逐渐被腐蚀,裸露出钛及其氧化物,导致电阻增大。 展开更多
关键词 钛涂层电极 Ti/RuO2-IrO2 强化电解寿命 失效机理 电解
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