占空比对纳米晶镍镀层结构及性能的影响  

Effect of Duty Cycle on the Microstructure and Properties of Nanocrystalline Nickel Coatings

作　　者：朴楠[1] 陈吉[1] 高松 许志显 陈晓明[1] 孙彦伟[1] 

机构地区：[1]辽宁石油化工大学机械工程学院石油化工过程腐蚀与防护技术中心,辽宁抚顺113001 [2]辽宁抚顺特殊钢股份有限公司,辽宁抚顺113001

出　　处：《电镀与环保》2016年第4期13-15,共3页Electroplating & Pollution Control

基　　金：辽宁省自然科学基金(No.201202127);辽宁省高等学校杰出青年学者成长计划项目(No.LJQ2011033)

摘　　要：采用电沉积方法在黄铜基体上制备出纳米晶镍镀层,并研究了占空比对镀镍层微观结构、硬度及耐蚀性的影响。结果表明:低占空比下镀镍层的择优取向面为(111)晶面,高占空比下呈现出(111)和(200)的双择优取向;随着占空比的增大,镀镍层的晶粒尺寸逐渐增大;占空比为70%时所得镀镍层的硬度最高;占空比为20%时所得镀镍层在3.5%的NaCl溶液中的耐蚀性最好。Nanocrystalline nickel coatings were prepared on the surface of brass by electrodeposition, and the effect of duty cycle on the microstructure, hardness and corrosion resistance of nickel coatings was studied. Results showed that the nickel coating prepared at low duty cycle exhibit preferred orientation only at （111） crystal plane, however the one prepared at high duty cycle exhibit double preferred orientation respectively at （111） crystal plane and （200） crystal plane. With the increasing of duty cycle, the grains of nickel coating became coarser. The nickel coating prepared at the duty cycle of 70% with the highest hardness value. Moreover, the nickel coating prepared at the duty cycle of 20% present the best corrosion resistance in 3.5 NaCl solution.

关 键 词：纳米晶镍镀层 电沉积 硬度 耐蚀性 占空比 

分 类 号：TQ153[化学工程—电化学工业]