Fe-B共晶合金在锌液中的腐蚀行为  

Corrosion Properties of Fe-B Eutectic Alloy in Liquid Zinc

作　　者：李虹云[1] 马瑞娜[1] 曹晓明[1] 李贺坤[1] 

机构地区：[1]河北工业大学材料科学与工程学院,天津300130

出　　处：《腐蚀与防护》2010年第12期905-908,共4页Corrosion & Protection

基　　金：国家自然科学基金项目(50871037);河北省自然科学基金项目(E2008000091)

摘　　要：在500℃的锌液中,对Fe-B共晶合金进行恒温静态腐蚀试验。对其腐蚀动力学和基体/Zn腐蚀界面进行研究,探讨了Fe-B共晶合金在锌液中的腐蚀过程和机理。结果表明,Fe-B共晶合金有比较好的耐锌液腐蚀性能;锌液腐蚀基体的过程是Fe原子和Zn原子相互扩散的过程;扩散导致新相的形成,在热应力和锌液冲击应力以及新相生长的拉应力的作用下,腐蚀层产生裂纹断裂并溶解。腐蚀以此方式反复进行,最终导致合金失效。The static isothermal corrosion tests on Fe-B eutectic alloy were performed in liquid zinc at 500℃.The process and mechanism of corrosion has been explored by studing corrosion kinetics and interface of matrix and Zn. The results showed that corrosion resistance of Fe-B eutectic alloy in liquid zinc was good.Corrosion of Fe-B eutectic alloy resulted from the inter-diffusion of Fe and Zn atoms.Cracks emerged on corrosion layer were caused by thermal stress and wallop of zinc.The corrosion products were dissolved by zinc ultimately.

关 键 词：Fe-B共晶合金 锌液腐蚀 扩散 溶解 

分 类 号：TG172.61[金属学及工艺—金属表面处理]