邻胺基苯酚在Al-Ga-Sn-Mg/KOH环境中的抑氢作用

中国腐蚀与防护学报

2005, Vol. 25

Issue (6): 369-372

研究报告

本期目录 | 过刊浏览

邻胺基苯酚在Al-Ga-Sn-Mg/KOH环境中的抑氢作用

张燕;宋玉苏

海军工程大学文理学院

Inhibiting H2-evolution for O-aminophenol on the system of Al-Ga-Sn-Mg/KOH

Yan Zhang;Yusu Song

海军工程大学文理学院

全文: PDF(120 KB)

摘要: 通过恒电流集气、稳态极化曲线、交流阻抗等电化学方法探讨了邻胺基苯酚在4mol/LKOH溶液中对Al-0.2Ga-0.1Sn-1Mg的自腐蚀抑氢作用，分析了其作用机理。结果表明：铝合金在强碱性介质中的自腐蚀析氢呈现出典型的正差异效应，自腐蚀严重。由于苯环、胺基、羟基等基团的存在使得邻胺基苯酚易在金属的表面吸附，减少了OH－与金属表面接触的机会，析氢量降低，自腐蚀程度减轻，但铝阳极的活性没有降低，正差异效应的规律也没有改变，是碱性介质中铝阳极的良好添加剂。

关键词 ：铝合金阳极, 邻胺基苯酚, 抑氢作用, KOH溶液

Abstract：The effect of inhibiting H2-evolution for O-aminophenol on Al-alloy anode in 4mol/L KOH was studied by galvanostatic gathering volumes of hydrogen evolution and stable state polarization curves and electrochemical impedance spectrum . The mechanism of inhibing H2-evolution for O-aminophenol was studied also in this paper. The results show that the self-dissoution of Al-anode is very heavy, and the H2-evolution quantity manifested typical "positive difference effect". O-aminophenol incuding phenyl ,amidocyanogen and hydroxyl absorbs easily on the surface of mental, which decreases the absorption quantity of OH－ on the surface of Al-anode, and decreases the volumes of hydrogen evolution. The performance of Al-Ga-Sn-Mg does not get poorer and the "positive difference effect" of Al-anode does not change, which manifestes O-aminophenol is an appropriate inhibitor in this system.

Key words： Al-alloy anode O-aminophenol inhibiting H2-evolution potassium hydroxide solution

收稿日期: 2004-06-17

ZTFLH:

TG174.42

通讯作者: 张燕 E-mail: yanzh_163@163.com

Corresponding author: Yan Zhang E-mail: yanzh_163@163.com

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引用本文:

张燕; 宋玉苏 . 邻胺基苯酚在Al-Ga-Sn-Mg/KOH环境中的抑氢作用[J]. 中国腐蚀与防护学报, 2005, 25(6): 369-372 .
Yan Zhang, Yusu Song. Inhibiting H2-evolution for O-aminophenol on the system of Al-Ga-Sn-Mg/KOH. J Chin Soc Corr Pro, 2005, 25(6): 369-372 .

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2005/V25/I6/369

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