金属间化合物抗锌液腐蚀的研究进展与发展方向

Research Progress and Developing Direction of Intermetallic Compounds Against Zinc Liquid Corrosion

综述了几种典型的金属间化合物在液态锌中的腐蚀行为及机理,归纳了Fe_(3)Al、TiAl、Fe_(2)B等不同结构金属间化合物在锌液中的反应特性和腐蚀后的界面失效形式,提出了金属间化合物在锌液中生成表面致密连续腐蚀抑制层或提高锌液腐蚀产物层的黏附力、抗剥落性能和界面元素阻扩散层的防护策略和材料设计方法,明确了金属间化合物在抗锌液腐蚀工程装备应用中的关注焦点和未来发展方向,为静态和流动条件下金属间化合物抗锌液腐蚀机理和抗蚀材料的开发提供了研究思路。

In this paper,the corrosion behavior and mechanism of several typical intermetallic compounds in liquid zinc are summarized.The reaction characteristics and interface failure modes of different structure intermetallic compounds such as Fe_(3)Al,TiAl and Fe_(2)B in liquid zinc are reviewed.It is suggested that a protective oxide film or corrosion-inhibited layer rapidly generated in the surface of the alloy may improve liquid zinc corrosion resistance and the spalling resistance and good adhesion performance of corrosion products by using adding Cr,Al and Si beneficial elements and forming corrosion-resistant phases as a strategy and the material design route.Besides,some future focus and developing direction for corrosion resistance to liquid zinc are proposed for the applications of hot-dip galvanizing in engineering equipment service(e.g.submerged rolls,stabilizer roll,etc.)in the paper.In addition,the static and flow condition corrosion damage of liquid zinc and the development of corrosion resistant material are suggested as the future research ideas in liquid zinc corrosion.