Abstract

Using a set of physicochemical (ellipsometry and contact angle measurements), electrochemical (potentiometric anode polarization and electrochemical impedance spectroscopy), and corrosion (periodic moisture condensation test) methods, the properties of adsorption films formed on the AMg6 aluminum alloy surface by the chamber method in vapors of some amines of heterocyclic compounds, carboxylic acids, and their salts are studied. It is established that the use of the studied compounds in the chamber processing of the alloy increases—though not effectively enough—its corrosion resistance in a humid atmosphere. The most promising inhibitors are carboxylic acids themselves; the optimum temperature for surface treatment with them is 140°C. One-hour treatment of steel with pairs of oleic, neodecanoic acid, and carboxylic acid A at this temperature gives rise to the formation of nanoscale adsorption films on the AMg6 alloy, which slightly hydrophilize the surface, but possess a protective aftereffect. Apparently, further improvement of chamber protection methods of the AMg6 alloy should consist in the selection of synergists for chamber corrosion inhibitors of the carboxylate type.

中文翻译：

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AMg6铝合金的腐蚀室抑制剂

摘要

使用一组物理化学方法（椭偏和接触角测量），电化学方法（电位阳极极化和电化学阻抗谱）和腐蚀方法（定期水分凝结测试），通过腔室法在AMg6铝合金表面上形成的吸附膜的特性研究了一些杂环化合物，羧酸及其盐的胺的蒸气中。可以确定的是，在合金的腔室加工过程中使用所研究的化合物可以提高（尽管不够有效）在潮湿环境中的耐腐蚀性。最有前途的抑制剂是羧酸本身。用它们进行表面处理的最佳温度是140°C。用油酸，新癸酸对处理一小时的钢，在此温度下，羧酸A会在AMg6合金上形成纳米级吸附膜，使表面微微亲水化，但具有保护性的后效应。显然，AMg6合金腔室保护方法的进一步改进应包括选择用于羧酸盐类型腔室缓蚀剂的增效剂。