电刷镀n-Al_2O_3/Ni-Co镀层组织与性能的研究  

A Research on Microstructure and Properties of n-Al_2O_3/Ni-Co Composite Coatings

作　　者：汪笑鹤[1] 徐滨士[1] 胡振峰[1] 董世运[1] 靳鹏[1] 

机构地区：[1]装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072

出　　处：《电镀与环保》2010年第6期12-16,共5页Electroplating & Pollution Control

基　　金：国家973计划项目(2007CB607601);武器装备预研基金项目(9140C8504020804)

摘　　要：针对镀硬铬中污染环境和危害人体健康的六价铬,为实现清洁生产,改善生态环境,开展了电刷镀n-Al2O3/Ni-Co纳米复合镀层的研究。测试了纳米微粒的质量浓度对n-Al2O3/Ni-Co纳米复合镀层表面形貌和硬度的影响;并对比了n-Al2O3/Ni-Co纳米复合镀层和硬铬镀层的硬度、耐磨性能和抗高温氧化性能;利用XRD测定了n-Al2O3/Ni-Co纳米复合镀层的结构和晶粒尺寸。研究结果表明:纳米微粒的质量浓度为20 g/L时,镀层具有最优的表面形貌和硬度;室温条件下,n-Al2O3/Ni-Co纳米复合镀层的硬度和耐磨性能都明显优于硬铬镀层的;高温条件下,n-Al2O3/Ni-Co纳米复合镀层的抗高温氧化性能与硬铬镀层的相当。In view of severe pollution to the environment caused by hexavalent hard chromium plating process and for realization of cleaner production benefiting ecological environment,the n-Al2O3/Ni-Co brush plating were studied.The effects of n-Al2O3 content on the microscopic morphology and micro-hardness of the coatings were investigated.The micro-hardness,wear-resistance property and high temperature oxidation resistance of n-Al2O3/Ni-Co brush coatings were studied.The results show that when the content of n-Al2O3 in plating liquid is 20 g/L,the microscopic morphology and micro-hardness of （n-Al2O3/Ni-Co） composite coatings reach optimum.At room-temperature, the composite coating n-Al2O3/Ni-Co has better micro-hardness and wear-resistance than hard chromium coating,and at high temperature,the composite coating（n-Al2O3/Ni-Co） is equivalent to hard chromium coating in high temperature oxidation resistance.

关 键 词：电刷镀 n-Al2O3/Ni-Co纳米复合镀层 摩擦磨损性能 显微硬度 

分 类 号：TQ153[化学工程—电化学工业]