铸铁文物复合气相缓蚀剂的复配与研究  

Research of Compound Volatile Corrosion Inhibitors for Cast Iron Relics

作　　者：滕飞[1] 井宇阳 胡钢[1] 

机构地区：[1]北京大学考古文博学院,北京100871

出　　处：《中国腐蚀与防护学报》2015年第3期265-270,共6页Journal of Chinese Society For Corrosion and Protection

基　　金：教育部人文社会科学基金项目(09YJC780002)资助

摘　　要：以碳酸环己胺(CHC)为主体,通过与其它缓蚀剂复配,筛选出可用于铸铁文物保护的高效复合气相缓蚀剂。用极化曲线,电化学阻抗谱和XPS等手段研究了该复合气相缓蚀剂的缓蚀作用机理。结果表明:CHC与乌洛托品复配,具有良好的协同缓蚀效果,当乌洛托品与CHC以1∶4的质量比复配时,缓蚀率可达96.61%。该复合气相缓蚀剂是以抑制阳极反应为主的混合型缓蚀剂,能够和铸铁发生化学吸附而形成缓蚀性能良好的保护膜。Applying volatile corrosion inhibitors is an effective way to protect cast iron relics. Herewith several new formulas of compounds of cyclohexylamine carbonate(CHC) with various kinds of inhibitors were designed and prepared for cast iron. Then their performance of corrosion inhibition was studied by means of electrochemical measurements and XPS. Results show among others that CHC with methenamine exhibits significant synergistic effect, i.e. a compound of mixed methenamine and CHC with a mass ratio 1∶4 exhibits the highest inhibition efficiency up to 96.61%.This mix-type compound inhibitor, which mainly suppressed the anodic reaction, could be chemically absorbed on the cast iron surface to act as a well-functioned protective film for cast iron relics.

关 键 词：复合气相缓蚀剂 铸铁 缓蚀机理 

分 类 号：TG174.42[金属学及工艺—金属表面处理]