ABSTRACT Research into non-toxic rare earth metal organic compounds providing an alternative to chromates as corrosion inhibitors was pioneered by research at Monash University almost 20 years ago. Further work at Monash and Deakin universities developed lanthanum 4 hydroxy cinnamate, which proved to be as effective as chromate for steel in chloride solution. Recently, attention has turned to substituting the cinnamate anion with 4-methylbenzoyl propanoate. There has also been the development of other non-toxic compounds with the dual functionality of inhibitor and biocide, with a view to combating microbiologically influenced corrosion. A compound 2-methylimidazolinium 4-hydroxycinnamate was synthesised, with corrosion studies showing it to be an effective inhibitor for steel. In this paper, an overview is provided of the recent research in this new area of corrosion inhibition at Deakin and Monash Universities, the mechanisms through which these protective films are thought to form and provide corrosion protection are also discussed. .

中文翻译：

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稀土金属和羧酸盐化合物作为钢铁缓蚀剂的开发进展

摘要 近 20 年前莫纳什大学的研究开创了对无毒稀土金属有机化合物的研究，该化合物可替代铬酸盐作为腐蚀抑制剂。莫纳什大学和迪肯大学的进一步工作开发了 4 羟基肉桂酸镧，事实证明，它与铬酸盐在氯化物溶液中的钢一样有效。最近，注意力已经转向用 4-甲基苯甲酰丙酸酯代替肉桂酸阴离子。还开发了具有抑制剂和杀生物剂双重功能的其他无毒化合物，以对抗受微生物影响的腐蚀。合成了一种化合物 2-甲基咪唑啉 4-羟基肉桂酸酯，腐蚀研究表明它是一种有效的钢铁抑制剂。在本文中，概述了迪肯大学和莫纳什大学最近在这个新的腐蚀抑制领域的研究，还讨论了这些保护膜被认为形成和提供腐蚀保护的机制。.