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题名: Effects of Pd substitution for Ni on corrosion performances of Mg0.9Ti0.1Ni1-xPdx hydrogen storage alloys
作者: Tian Qi-feng;  Zhang Yao;  Tan Zhi-cheng;  Xu Fen;  Sun Li-xian;  Zhang Tao;  Yuan Hua-tang
通讯作者: 谭志诚
关键词: MgNi-based alloys ;  Pd ;  mechanical alloying ;  hydrogen storage alloy ;  substitution ;  corrosion resistance
刊名: TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
发表日期: 2006-06-01
卷: 16, 期:3, 页:497-501
收录类别: SCI
文章类型: Article
部门归属: 15
项目归属: 1504,1501
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Metallurgy & Metallurgical Engineering
研究领域[WOS]: Metallurgy & Metallurgical Engineering
英文摘要: The Mg0.9Ti0.1Ni1-xPdx (x = 0, 0.05, 0.1, 0.15) hydrogen storage electrode alloys were prepared by mechanical alloying. The main phases of the alloys were determined as amorphous by X-ray diffraction(XRD). The corrosion potentials of the alloys were measured by open circuit potential measurements and the values are -0.478, -0.473, -0.473 and -0.471 V (vs Hg/HgO electrode) for x=0, 0.05, 0.1, 0.15, respectively. The corrosion currents of the studied alloys were obtained by non-linear fitting of the anodic polarization curve using Bulter-Volmer equation and Levenberg-Marquardt algorithm, which were obtained after different cycles. The initial corrosion currents of the alloys are decreased with the increasing of Pd content. The increasing of Pd content in the alloys inhibits the corrosion rates of the electrode alloys with the progress of cycle number. The electrochemical impedance spectroscopy(EIS) was conducted after open circuit potential of the alloys stabilizing. The impedance data fit well with the theoretical values obtained by the proposed equivalent circuit model. The corrosion resistances and the thickness of surface passive film of the alloys, which were deduced by the analyses of EIS, are enhanced with the increasing of Pd content in the alloys, which are consistent with the results of corrosion rates obtained from anodic polarization measurements.
关键词[WOS]: AMORPHOUS-ALLOYS ;  ELECTROCHEMICAL CHARACTERISTICS ;  DISCHARGE CAPACITIES ;  TI ;  MGNI ;  BATTERIES ;  BEHAVIOR ;  TERNARY ;  ZR
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000238985600001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/97885
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Nankai Univ, Inst New Energy Mat Chem, Tianjin 300071, Peoples R China

Recommended Citation:
Tian Qi-feng,Zhang Yao,Tan Zhi-cheng,et al. Effects of Pd substitution for Ni on corrosion performances of Mg0.9Ti0.1Ni1-xPdx hydrogen storage alloys[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2006,16(3):497-501.
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