复合气相缓蚀剂对铁质文物缓蚀机理的研究  

INVESTIGATION ON INHIBITION MECHANISM OF COMPOSITE VOLATILE CORROSION INHIBITOR(VCI) FOR IRON RELICE

作　　者：丁艳梅[1] 许淳淳[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029

出　　处：《腐蚀科学与防护技术》2006年第4期241-245,共5页Corrosion Science and Protection Technology

基　　金：国家"十五"科技攻关项目(2001BA805B01)

摘　　要：采用乌洛脱品和胺类缓蚀剂A制成一种新的气相缓蚀剂,用模拟大气腐蚀状态的薄液膜电化学测试技术研究了复合气相缓蚀剂对铸铁试样电化学行为的影响.并通过X射线衍射(XRD)和X射线光电子能谱(XPS)分析了复合气相缓蚀剂作用于模拟带锈文物所形成的锈层结构,并探讨了其缓蚀机理.结果表明,该复合气相缓蚀剂是一种阳极型的气相缓蚀剂,对模拟带锈文物有很好的缓蚀效果,该缓蚀剂可以促进铁质文物中的不稳定锈层向稳定锈层转化,抑制基体腐蚀的进一步扩展,对铁质文物具有很好的保护作用.A new volatile corrosion inhibitor （VCI） was composed by hexamethylene tetramine and other amine-inhibitors A. The electrochemical behavior of the VCI on cast iron samples was studied by thin layer electrolyte test technique which could simulate the conditions of corrosion in atmospheres. The results showed that the VCI is a positive one. Through X-ray diffraction （XRD） and X-ray photoelectron spectroscopy （XPS）, the film structure and inhibition mechanism of VCI on archaeological iron objects were studied. The results indicated that the VCI have well effect on rust layer of archaeological iron relics. The inhibition film could acceralate the transition of unstable rust layer to stable one and suppress further corrosion of the substrate. The VCI has a good protectiveness to iron relics.

关 键 词：模拟铁质文物 气相缓蚀剂 薄液膜极化曲线 XRD X射线光电子能谱(XPS) 

分 类 号：TG174.42[金属学及工艺—金属表面处理]