| EN及SEM在铝锌铟合金活化机理研究中的应用 |
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| 引用本文： | 文九巴,卢现稳,马景灵,李元侦.EN及SEM在铝锌铟合金活化机理研究中的应用[J].功能材料,2009,40(8). |
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| 作者姓名： | 文九巴 卢现稳 马景灵 李元侦 |
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| 作者单位： | 1. 河南科技大学,材料科学与工程学院,河南,洛阳,471003;河南省有色金属材料科学与加工技术重点实验室,河南,洛阳,471003
2. 河南科技大学,材料科学与工程学院,河南,洛阳,471003 |
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| 基金项目： | 河南省科技创新杰出人才计划资助项目(094200510019); 河南省自然科学基金资助项目(092300410132) |
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| 摘 要： | 采用扫描电镜(SEM)及电化学噪声(EN)分析了Al-5Zn-0.03In-1Mg-0.05Ti-X合金腐蚀前后的金相结构、表面形态,探讨了合金初始活化过程.结果表明晶界上存在富AlZnMg及富AlZnMgIn两种偏析相,这些阳极第二相处诱发的孔蚀为合金初始活化的主要方式.对电化学噪声进行小波分解可以清晰地分辨合金表层第二相初始腐蚀的时间段.
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| 关 键 词： | 铝基牺牲阳极 电化学噪声 SEM 活化机理 |
Application of EN and SEM on the study of activation mechanism of Al-Zn-In alloy |
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| WEN Jiu-ba
,
LU Xian-wen
,
MA Jing-ling
,
LI Yuan-zhen.Application of EN and SEM on the study of activation mechanism of Al-Zn-In alloy[J].Journal of Functional Materials,2009,40(8). |
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| Authors: | WEN Jiu-ba LU Xian-wen MA Jing-ling LI Yuan-zhen |
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| Affiliation: | WEN Jiu-ba1,2,LU Xian-wen1,MA Jing-ling1,LI Yuan-zhen1(1.School of Materials Science & Engineering,Henan University of Science & Technology,Luoyang 471003,China,2.Henan Key laboratory of Advanced Non-ferrous Metals,China) |
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| Abstract: | Electrochemical noise analysis(EN) and SEM was used on the study of activation mechanism of Al-5Zn-0.03In-1Mg-0.05Ti-X alloy.The results show that there are tow type segregated phases in the grain boundaries which are rich in AlZnMg or AlZnMgIn.The pitting caused by these segregated phases is the main way activating the surface of Al-Zn-In ally.Wavelet transform of EN of alloy in 3.5% NaCl solution can clearly distinguish the detail of the initial corrosion process of segregation phases in the surface. |
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| Keywords: | Al-based sacrificial anode EN SEM activation mechanism |
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