NdFeB磁性基材化学镀Ni-Cu-P初期形核过程及机制  

Initial Nucleation Process and Mechanism of Electroless Ni-Cu-P Coating on NdFeB Permanent Magnet

作　　者：王憨鹰[1] 陈焕铭[2] 李成荣[1] 刘炜[1] 

机构地区：[1]榆林学院能源工程学院,陕西榆林719000 [2]宁夏大学物理电气信息学院,宁夏银川750021

出　　处：《材料保护》2011年第10期29-31,7,共3页Materials Protection

基　　金：陕西省教育厅专项科研计划项目(2010JK934)

摘　　要：为了弄清NdFeB磁性材料表面化学镀Ni-Cu-P合金初期形核过程及机制,研究了不同时间化学镀Ni-Cu-P合金层初期形核过程、形貌和组织结构特征。结果表明:初期沉积过程具有明显的择优倾向和不均匀性;Ni和Cu原子并非以单个原子的形式沉积于基体表面,而是还原后在固-液界面处形成原子团在基体表面高能量区域优先沉积形核,然后以不规则的形态长大直至覆盖基体表面,形成晶态镀层。Cailiao Baohu 2011,44(10),29～31(Ch).The initial nucleation process of electroless Ni-Cu-P alloy coatings deposited on NdFeB permanent magnet at various plating durations as well as the morphology and composition of the coatings was investigated so as to reveal the nucleation mechanism of the alloy coatings.It was found that Ni-Cu-P alloy coating showed obvious orientation and non-uniformity at the initial stage of deposition.Ni and Cu atoms were not deposited on the surface of the substrate in a mode of individual atom deposition.Actually,they were reduced to form atomic clusters at the solid-liquid interface,followed by preferential nucleation and deposition at substrate surface locations with high energy.Resultant preferentially nucleated and deposited atomic clusters then grew up in an irregular manner until crystalline coating was formed to cover all over the matrix surface.

关 键 词：化学镀NI-CU-P合金 沉积过程 初期形核 晶态镀层 形核机制 

分 类 号：TQ153.2[化学工程—电化学工业]