占空比对纳米晶镍镀层结构及性能的影响

发布时间：2018-05-13 21:24

本文选题：纳米晶镍镀层 + 电沉积　；参考：《电镀与环保》2016年04期

【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。
[Abstract]:Nanocrystalline nickel coating was prepared on brass substrate by electrodeposition. The effects of duty cycle ratio on microstructure, hardness and corrosion resistance of nickel coating were studied. The results show that the preferred orientation plane of the nickel plating layer with low duty cycle is (111) crystal plane, and the double preferred orientation of the nickel plating layer appears at the high duty cycle ratio, and the grain size increases with the increase of the duty cycle of the nickel plating layer, and the grain size increases with the increase of the duty cycle ratio. The hardness of the nickel plating layer is the highest when the duty cycle is 70 and the corrosion resistance of the nickel plating layer is the best in 3.5% NaCl solution when the duty cycle is 20.
【作者单位】：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;辽宁抚顺特殊钢股份有限公司;
【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)
【分类号】：TQ153

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