| Sn对AP65镁阳极显微组织和电化学性能的影响 |
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| 引用本文： | 金和喜,王日初,彭超群,冯艳,石凯.Sn对AP65镁阳极显微组织和电化学性能的影响[J].矿冶工程,2011,31(5). |
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| 作者姓名： | 金和喜 王日初 彭超群 冯艳 石凯 |
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| 作者单位： | 中南大学材料科学与工程学院,湖南长沙,410083 |
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| 基金项目： | 国家攻关项目(MKPT-02-181)资助 |
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| 摘 要： | 采用熔炼法制备了Mg-6%Al-5%Pb-Sn镁阳极材料。采用金相显微镜(OM)、扫描电镜(SEM)、浸泡法、恒电流极化法和动电位扫描法分别研究了不同Sn含量对AP65镁阳极显微组织和电化学性能的影响。结果表明:加Sn后镁阳极显微组织中产生条形Mg2Sn相,主要分布于基体晶界,且Mg2Sn相含量随着Sn含量增加而增多;Mg-6%Al-5%Pb-2.0%Sn镁阳极析氢速率、失重速率、自腐蚀速率最小,而腐蚀电位、腐蚀电流密度、工作电位和阳极使用效率最高。随着Sn含量增加,镁阳极腐蚀微裂坑和腐蚀产物减少,镁阳极溶解速率降低。
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| 关 键 词： | 阳极材料 AP65 镁阳极 Mg2Sn相 显微组织 电化学性能 |
Influence of Sn on Microstructures and Electrochemical Properties of AP65 Anodes |
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| JIN He-xi,WANG Ri-chu,PENG Chao-qun,FENG Yan,SHI Kai.Influence of Sn on Microstructures and Electrochemical Properties of AP65 Anodes[J].Mining and Metallurgical Engineering,2011,31(5). |
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| Authors: | JIN He-xi WANG Ri-chu PENG Chao-qun FENG Yan SHI Kai |
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| Affiliation: | JIN He-xi,WANG Ri-chu,PENG Chao-qun,FENG Yan,SHI Kai (School of Materials Science and Engineering,Central South University,Changsha 410083,Hunan,China) |
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| Abstract: | Mg-6%Al-5%Pb-Sn anodes were prepared by fusion metallurgy.The effects of Sn contents on the microstructures and electrochemical properties of AP65 anodes were examined by optical microscopy(OM),scanning electronic microscopy(SEM),immersion tests,galvanostatic polarization and potentiodynamic scanning technique.Results reveal that strip-like Mg2Sn phase occurs in the microstructure of the anode after the addition of Sn and mainly distributes along the grain boundaries and increases with the increase of Sn co... |
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| Keywords: | anode material AP65 magnesium anode Mg2Sn phase microstructure electrochemical property |
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