低碳钢热浸Zn-0.15%Ni合金镀层组织及第二相粒子  

Microstructure and secondary phase particles of hot dipped Zn -0.15%Ni coating on low carbon steels

作　　者：许乔瑜[1] 卢锦堂[1] 裴滢[1] 陈锦虹[1] 孔纲[1] 

机构地区：[1]华南理工大学材料科学与工程研究中心,广东广州510640

出　　处：《材料科学与工艺》2002年第3期318-321,共4页Materials Science and Technology

摘　　要：采用热浸zn-Ni合金镀锌方法,在含0.03％～0.36％Si的低碳钢上获得Zn～Ni合金镀层.研究了镀浴中Ni含量和钢中Si含量对镀层中δ相和ζ相生长速率的影响,以及Zn-Ni合金镀层η相中的第二相粒子即zn-Fe-M三元化合物г2相粒子的形成和长大过程.结果表明,在Zn-0.15％Ni镀浴中,含硅0.03％～0.215％钢镀层的ζ相明显受到抑制,δ相厚度略有增加.г2相粒子的形成和长大过程包括ζ相的溶解、г2相的形核和成比例吸收铁、镍而长大.Hot dipped Zn -Ni alloy coating was prepared on low carbon steels containing 0.03% -0.36% silicon by dipping in Zn - Ni bath. The influence of nickel content in the bath and silican content in the steel 、 on the growth rate of 8 and ξ phases, and the formation and growth process of secondary phase particles i.e. Zn - Fe - Ni ternary compound г 2 phase particles in η phase of zinc - nickel alloy coating were studied. The results showed that the growth ofξ phase in the Zn -0.15% Ni coatings of steels containing 0.03% - 0.215% Si is restrained distinctly and the thickness of 8 phase increases slightly. The process of formation and growth of г 2 phase includes the disso-lation ofξ phase the formation of г 2 phase and the growth to by absorbing iron and nickel atoms proportionally.

关 键 词：低碳钢 第二相粒子 热镀锌 Zn-Ni合金镀层 显微组织 热浸镀 铝镍合金 

分 类 号：TG174.443[金属学及工艺—金属表面处理]