Mo合金化纯Ti电化学行为研究OA
The investigation of Mo alloying on the electrochemical behaviour of pure Ti
研究了不同Mo含量合金化对纯Ti微观组织结构和电化学行为的影响,旨在改善钛双极板在质子交换膜水电解环境中的耐蚀性和电导率.结果表明,随着Mo含量增加,β相的体积分数增加,α相的晶粒尺寸减小,耐蚀性提高.韦伯阻抗出现在开路电位下阻抗谱的低频区域.当Mo含量低于1.0％时,电化学腐蚀后表面存在较多腐蚀坑.1.0 V vs Ref极化4 h的钝化膜表现出n型半导体行为,当Mo含量大于1.0％时,钝化膜的导电性增加.
The effect of pure Ti alloyed with different Mo content on the microstructure and electro-chemical behaviour was studied for the need of further improvement in corrosion resistance and con-ductivity of titanium bipolar plates in proton exchange membrane water electrolysis environments.Res-ults indicated that the volume fraction of β phase increased,the grain size of α phase decreased,and the corrosion resistance was improved with the increase of Mo content.The warburg impedance appeared in the low frequency region of impedance spectroscopy obtained at open circuit potential(OCP).When the Mo content was below 1.0％,there were many corrosion pits on the surface after electrochemical corro-sionthe.Passivation film formed by polarizing at 1.0 V vs Ref for 4 hours exhibited n-type semiconduct-or behavior,and the conductivity increasesd with Mo content greater than 1.0％.
高强;滕艾均;康强;王鹏;王纪兵
鞍钢集团北京研究院有限公司钒钛分院,北京 102200鞍钢集团北京研究院有限公司钒钛分院,北京 102200鞍钢集团北京研究院有限公司钒钛分院,北京 102200鞍钢集团北京研究院有限公司钒钛分院,北京 102200中国重型汽车集团,山东济南 250101
矿业与冶金
双极板TiMo微观结构耐蚀性
bipolar platesTiMomicrostructurecorrosion resistance
《钢铁钒钛》 2026 (1)
89-93,5
航空用大规格钛合金材料研制技术攻关(2024JH1/11700026).
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