脉冲参数对等离子电沉积镍镀层结构和性能的影响  

Influences of pulse parameters on microstructure and properties of Ni-coatings prepared by plasma electrodeposition

作　　者：赵广宏[1] 何业东[1] 

机构地区：[1]北京科技大学新材料技术研究院,北京市腐蚀、磨蚀与表面技术重点实验室,北京100083

出　　处：《材料热处理学报》2012年第8期115-120,共6页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(51171021)

摘　　要：采用高频脉冲电源在纯铜基材上以等离子电沉积技术制备出了金属镍镀层,研究了高频脉冲频率以及占空比变化对等离子镀镍层结构和性能的影响。对镀层进行了SEM,显微硬度以及划痕结合力的表征。结果表明,随着高频脉冲频率和占空比的增加,镀层表面的熔融态形貌逐渐减少,镀层逐渐变得致密,表面硬度与结合力值也相应提高。通过讨论脉冲电源的能量作用方式,分析了频率及占空比对等离子电沉积镍层表面结构及性能的影响规律。A high-frequency pulse power was used to fabricate Ni-coatings on copper substrate by plasma electrodeposition. The influences of the high-frequency pulse frequency and duty cycle on microstructure and performance of the coatings were studied. The coatings were characterized by SEM, micro-hardness and scratch adhesion tests. The results indicate that the molten regions in the surface are reduced with the high-frequency pulse frequency and duty cycle value increases. Moreover, the coatings gradually become dense and the surface hardness as well as adhesion strength are improved, correspondingly. The mechanism of the pulse frequency and duty cycle value on the coatings microstructure and properties are discussed in terms of the energy mode of the pulse power.

关 键 词：等离子电沉积 脉冲频率 占空比 镀镍层 表面结构 

分 类 号：TG174.44[金属学及工艺—金属表面处理]