低碳钢在锌液中的界面反应动力学及机理研究  

Interface Reaction Dynamics and Mechanism of Plain Carbon Steel in Liquid Zinc

作　　者：冉红涛 马胜强[2] 刘广柱[2] 王勇[2] 邢建东[2] 

机构地区：[1]西北工业集团有限公司,陕西西安710043 [2]西安交通大学材料科学与工程学院,陕西西安710049

出　　处：《铸造技术》2014年第11期2606-2610,共5页Foundry Technology

基　　金：国家自然科学基金(51031128);博士点基金(20120201120005);博士后基金(2012M521767;2013T60875);陕西省自然科学基金(2014JQ7281);陕西省博士后基金;西安交通大学基本科研业务费自由探索资助项目(XJJ2013038)

摘　　要：研究了低碳钢短时间浸入锌液后铁、锌之间的反应过程。结果表明,低碳钢与锌液的反应层产物主要包括靠近内侧呈柱状晶生长的紧凑、致密δ-Fe Zn10相和外侧较为疏松的ζ-Fe Zn13相,稳定生长阶段疏松的ζ-Fe Zn13相生长占据主导地位。铁、锌的反应产物生长过程符合抛物线生长规律,生长初期主要受界面反应控制,而在稳定生长阶段,主要受液锌原子扩散控制。铁、锌产物层从钢基体到表面依次为过饱和α-Fe、Γ1-Fe5Zn21、δ-Fe Zn10、ζ-Fe Zn13和表层的η-Zn。The Fe-Zn reaction process of plain carbon steel dipped into liquid zinc was investigated by short immersion tests. The results show that reacted layer products between the steel and zinc are consist of compact and columnar δ-Fe Zn10 phase near substrate and mass and dispersed ζ-Fe Zn13 phase close to zinc. At the stable stage of growth, ζ-Fe Zn13 phase dominates the growth of Fe-Zn compounds. The growth of Fe-Zn compounds follows parabolic law, and it relays on the control of interface reaction at the initial stage of Fe-Zn reaction, while the diffusion of zinc atom can govern the reaction process of Fe and Zn at stable stage of growth. The reacted products of Fe and Zn from substrate to surface are α-Fe,Γ1-Fe5Zn21, δ-Fe Zn10, ζ-Fe Zn13 and η-Zn in sequence.

关 键 词：反应层 界面反应 铁锌化合物 液锌 

分 类 号：TG174.4[金属学及工艺—金属表面处理]