Corrosion inhibition effects of metal cations on SUS304 in 0.5 M Cl- aqueous solution
Corrosion inhibition effects of metal cations on SUS304 in 0.5 M Cl- aqueous solution
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DOI：
10.1016/j.corsci.2018.06.028
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发表时间：
2018-08-01
影响因子：
8.3
通讯作者：
Sakairi, Masatoshi
中科院分区：
文献类型：
--
作者：
Islam, Md. Saiful;Otani, Kyohei;Sakairi, Masatoshi
通过浸泡试验、表面分析和电化学测试，研究了SUS304在含不同金属阳离子的0.5M氯离子水溶液中的腐蚀特性。结合XPS分析结果，结合硬软酸碱(HSAB)的概念和钝化膜结构，阐明了金属阳离子腐蚀的机理。据推测，高硬度的金属阳离子通过与钝化膜的化学结合形成一层膜。钝化膜由金属阳离子层保护，不受氯离子的侵蚀，从而抑制了腐蚀反应。
The corrosion characteristics of SUS304 exposed to 0.5 M Cl- aqueous solution containing different metal cations were studied with immersion tests, surface analysis and electrochemical tests. The mechanism of corrosion with metal cations was clarified by the XPS analysis results together with the hard and soft acid and base (HSAB) concept and the passive films structure. It is supposed that metal cations with large hardness make a layer by chemical bonding with the passive films. The passive films are protected by the metal cation layer from Cl- attack, and consequently corrosion reactions are inhibited.