Dissolution mechanism of solid nickel in liquid zinc saturated with Fe  

作　　者：孔纲 卢锦堂 许乔瑜 

机构地区：[1]School of Materials Science and Engineering, South Chin a University of Technology

出　　处：《中国有色金属学会会刊：英文版》2007年第3期564-569,共6页Transactions of Nonferrous Metals Society of China

摘　　要：The dissolution behavior of solid nickel in static liquid zinc saturated with Fe at 723 K was studied. The results show that when immersing solid Ni in liquid Zn saturated with Fe, the intermetallic compound layers consisted of γ and δ phases are formed on nickel substrate, which is the same as that in liquid pure zinc. However, some Γ2 particles are formed in the liquid near the solid/liquid interface. These Γ2 particles can easily heterogeneously nucleate on ζ particles and grow fast. The dissolution process is governed by diffusion of nickel atom across a concentration boundary layer in liquid Zn saturated with Fe, and is different from a mixed control mechanism of nickel in liquid pure zinc. The participation of Γ2 particles makes the dissolution of solid Ni in the liquid accelerated.The dissolution behavior of solid nickel in static liquid zinc saturated with Fe at 723 K was studied. The results show that when immersing solid Ni in liquid Zn saturated with Fe, the intermetallic compound layers consisted of γ and δ phases are formed on nickel substrate, which is the same as that in liquid pure zinc. However, some F2 particles are formed in the liquid near the solid/liquid interface. These Г2 particles can easily heterogeneously nucleate on （particles and grow fast. The dissolution process is governed by diffusion of nickel atom across a concentration boundary layer in liquid Zn saturated with Fe, and is different from a mixed control mechanism of nickel in liquid pure zinc. The participation of Г2 particles makes the dissolution of solid Ni in the liquid accelerated.

关 键 词：固态镍 液态锌 溶解性能 机械性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]