缓蚀性组分对金属小孔腐蚀的缓蚀作用与机制  

Effect and Mechanism of Inhibitors on Pitting Corrosion of Metals

作　　者：周勇[1] 左禹[2] 闫福安[1] 

机构地区：[1]武汉工程大学绿色化工过程教育部重点实验室,武汉430205 [2]北京化工大学材料电化学过程与技术北京市重点实验室,北京100029

出　　处：《中国腐蚀与防护学报》2017年第6期487-494,共8页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金(51601133和51210001)~~

摘　　要：综述了近年来国内外若干缓蚀性物质对金属材料小孔腐蚀缓蚀效果和机制的研究进展,涉及到的缓蚀性物质主要包括无机阴离子、有机分子/离子以及稀土元素。到目前,针对无机阴离子对小孔腐蚀缓蚀效果和机制的研究相对较多,而针对稀土元素的则相对较少。本文通过综合介绍,以期为开发可同时抑制金属均匀腐蚀和小孔腐蚀的新型复合缓蚀剂提供支持和帮助,并指明进一步的研究方向。The addition of inhibitors is one of the main methods to control the corrosion of metals and alloys.At present,studies and applications about inhibitors are mainly focused on the inhibition for uniform corrosion,but less on the inhibition for localized corrosion,particularly for pitting corrosion.In this paper,the inhibition effect and mechanism of several inhibitive species for pitting corrosion are summarized and compared,involving mainly inorganic anions,organic molecules/ions and rare earth elements.Relatively speaking,there are many studies about the inhibition of inorganic anions in recent years,but the published reports about the inhibition of rare earth elements are relatively few.The objective of this paper is to provide a reference for the development of novel and composite inhibitors in order to control uniform corrosion and pitting corrosion simultaneously.Finally,the further studies and applications are predicted.

关 键 词：缓蚀剂 金属材料 小孔腐蚀 

分 类 号：TG174.42[金属学及工艺—金属表面处理]