V_(3)TiNi_(0.56)Cr_(x)(x=0,0.2,0.4,0.6)/NiMoW钒基复合析氢阴极电催化与耐蚀性能研究  

Study on the corrosion resistance of vanadium-based V_(3)TiNi_(0.56)Cr_(x)(x=0,0.2,0.4,0.6)/NiMoW composite cathode for hydrogen evolution

作　　者：杜金晶[1] 张轩 周宇 崔新新 朱军[1] 左恒 王斌[1] 鲍彦如 刘景田 郭悦豪 Du Jinjing;Zhang Xuan;Zhou Yu;Cui Xinxin;Zhu Jun;Zuo Heng;Wang Bin;Bao Yanru;Liu Jingtian;Guo Yuehao(School of Metallurgical Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,Shaanxi,China;Shaanxi Wuzhou Mining Co.,Ltd.,Shangluo 726000,Shaanxi,China)

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055 [2]陕西五洲矿业股份有限公司,陕西商洛726000

出　　处：《钢铁钒钛》2024年第4期48-53,共6页Iron Steel Vanadium Titanium

基　　金：陕西省科技厅区域创新能力引导计划资助项目(编号:2022QFY10-05);陕西省“两链融合”校企联合重点专项(编号:2022LL-JB-09)。

摘　　要：主要研究了金属元素Cr对钒基复合析氢阴极V_(3)TiNi_(0.56)Cr_(x)(x=0,0.2,0.4,0.6)/NiMoW合金物相、形貌、电催化性能与耐腐蚀性能的影响。结果表明:随着合金基体材料中Cr含量增加,基体合金表面形成了钝化膜,能够使基体材料在电化学腐蚀的过程中产生钝化区。钒基复合析氢阴极的电催化能力略有下降,由极化曲线外推法计算得到自腐蚀电流减小3.61 mA/cm、自腐蚀电位正移0.154 V。长时间电解后,钒基复合析氢阴极表面形成的缝隙减少,电流密度变化幅度减小,说明掺杂金属元素Cr后,其耐蚀性能与长效稳定性均有所提高。This article mainly studied the influence of Cr element on the electrocatalytic performance and corrosion resistance of vanadium-based V_(3)TiNi_(0.56)Cr_(x)(x=0,0.2,0.4,0.6)/NiMoW composite cathode for hydrogen evolution.The phase,morphology,electrocatalytic performance,and corrosion resistance of V_(3)TiNi_(0.56)Cr_(x)(x=0,0.2,0.4,0.6)/NiMoW alloy during the electrocatalytic process is analyzed.A passivation film is formed on the surface of the matrix alloy,which can create a passivation zone in the electrochemical corrosion process of the matrix material.It is considered to contain Ni and Cr interstitial substituents.The electrocatalytic ability of vanadium-based composite cathode for hydrogen evolution slightly decreases.The self-corrosion current decreases by 3.61 mA/cm and the self-corrosion potential shifts forward by 0.154 V,which is calculated by the polarization curve extrapolation method.After long-term electrolysis,the amount of gaps formed on its surface decrease,and only slight changes existed in the amplitude of current density change,indicating that its corrosion resistance and long-term stability have been improved.

关 键 词：钒基复合析氢阴极 机械合金化 电沉积 电催化 耐蚀性能 长效稳定性 

分 类 号：TF125[冶金工程—粉末冶金] TG139[冶金工程—冶金物理化学]