Electrocrystallization nucleation and growth of NiFe alloys on brass substrate  

作　　者：张昭 

机构地区：[1]Depart ment of Chemistry Zhejiang University

出　　处：《中国有色金属学会会刊：英文版》2005年第4期897-901,共5页Transactions of Nonferrous Metals Society of China

基　　金：Projects(20203015 ,50499335) supported by the National Natural Science Foundation of China ;Project supported by theState Key Laboratory for Corrosion and Protection , China

摘　　要：The electrocrystalliztion nucleation and growth process of Ni-Fe alloy was studied using cyclic voltammetry and chronoamperometry. The results show that, in the case of high deposition overpotential, the nucleation/growth process of Ni-Fe binary alloy is 3-D instantaneous, and the growth rate of the previously formed nuclei increases with overpotential. However, at low overpotential, no distinguished nucleation current can be observed.Meanwhile, the discrepancy between the experimental non-dimensional variables(I/Im)2 and those calculated from the theoretical model was elucidated in the light of the molecular orbital theorem.The electrocrystalliztion nucleation and growth process of Ni-Fe alloy was studied using cyclic voltammetry and chronoamperometry. The results show that, in the case of high deposition overpotential, the nucleation/growth process of Ni-Fe binary alloy is 3-D instantaneous, and the growth rate of the previously formed nuclei increases with overpotential. However, at low overpotential, no distinguished nucleation current can be observed. Meanwhile, the discrepancy between the experimental non-dimensional variables（I/Im）^2 and those calculated from the theoretical model was elucidated in the light of the molecular orbital theorem.

关 键 词：NiFe合金 电镀工艺 黄铜 伏安法 沉积作用 

分 类 号：TG111[金属学及工艺—物理冶金]