| 添加剂La(CH3COO)3和NaF对AZ31在Mg(ClO4)2溶液中电化学性能的影响 |
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| 引用本文： | 熊媛媛,张娅,胡少峰,陈秋荣,谢有桃.添加剂La(CH3COO)3和NaF对AZ31在Mg(ClO4)2溶液中电化学性能的影响[J].中国腐蚀与防护学报,2013,33(3):241-244. |
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| 作者姓名： | 熊媛媛 张娅 胡少峰 陈秋荣 谢有桃 |
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| 作者单位： | 1. 中国科学院微系统与信息技术研究所 上海 200050;2. 嘉兴中科亚美合金技术有限公司 嘉兴 314051;3. 中国科学院硅酸盐研究所 上海 200050 |
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| 基金项目： | 上海市科委基础研究重大项目(11DJ1400302);嘉兴中科专项(2011AZ2011);中国科学院特种无机涂层重点实验室开发基金项目资助 |
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| 摘 要： | 采用极化曲线、电化学阻抗、恒电流放电、析氢失重等方法，研究了AZ31镁合金在空白1.5 mol/L Mg(ClO4)2溶液以及添加了La（CH3COO）3和NaF的电解液中的电化学行为。结果表明，添加剂NaF使得AZ31在1.5 mol/L Mg(ClO4)2溶液中开路电位和活化电位负移，极化曲线中腐蚀电流降低以及浸泡实验中析氢率和失重率降低，放电效率提高，更为重要的是缩短了放电滞后时间；另一方面添加剂La（CH3COO）3提高了放电效率，但对于放电滞后没有改善，对于耐蚀性也没有提高。
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| 关 键 词： | AZ31镁合金 添加剂 电化学行为 放电滞后
中图分类号：O646 文献标识码：A 文章编号：1005-4537(2013)03-0241-04 |
Effects of Additions of La(CH3COO)3 and NaF on Electrochemical Behavior of AZ31 Alloys inMg(ClO4)2 Solution |
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| XIONG Yuanyuan,ZHANG Ya,HU Shaofeng,CHEN Qiurong,XIE Youtao.Effects of Additions of La(CH3COO)3 and NaF on Electrochemical Behavior of AZ31 Alloys inMg(ClO4)2 Solution[J].Journal of Chinese Society For Corrosion and Protection,2013,33(3):241-244. |
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| Authors: | XIONG Yuanyuan ZHANG Ya HU Shaofeng CHEN Qiurong XIE Youtao |
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| Affiliation: | 1.Shanghai Institute of Microsystem and Information Technology(SIMIT),Chinese Academy of Sciences,Shanghai 200050,China;2.Jiaxing Asia Magnesium Technology Co.,Ltd.,Chinese Academy of Sciences(CAS),Jiaxing 314051,China 3.Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China |
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| Abstract: | Abstrat: The electrochemical behavior of AZ31 alloy in Mg(ClO4)2 solution with different additives was investigated by polarization curve, electrochemical impedance, constant current discharge and immersion corrosion tests. The results showed that the addition of NaF makes the open circuit potential and activation potential more negative, decreases the corrosion current in the polarization curve and corrosion rate in immersion test, increases the discharge efficiency, and especially shortens discharge hysteresis time. In contrast, the addition of La（CH3COO）3 increases the discharge efficiency, but has no beneficial effect on the discharge hysteresis and corrosion resistance of the alloy. |
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| Keywords: | AZ31 magnesium alloy additive electrochemical behavior discharge hysteresis |
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