相结构对Ni-Co合金镀层摩擦磨损性能的影响  

Effects of Phase Structure on the Friction and Wear Properties of Electrodeposited Ni-Co Deposits

作　　者：王立平[1] 高燕[1] 刘惠文[1] 薛群基[1] 徐洮[1] 

机构地区：[1]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000

出　　处：《电镀与环保》2005年第2期14-16,共3页Electroplating & Pollution Control

基　　金：国家自然科学基金项目 (5 0 2 710 80 ;5 0 3 2 3 0 0 7;5 0 172 0 5 2 );国家 863项目 (2 0 0 3AA3 0 5 670)

摘　　要：采用硫酸盐体系电镀Ni Co合金镀层 ,考察了钴含量对合金镀层相结构的影响 ,并进一步研究了相结构对镀层摩擦磨损性能的影响。实验发现 :随着镀层中钴含量的增加 ,合金镀层由面心立方结构逐渐向密排立方结构转变。干摩擦条件下 ,面心立方结构的Ni Co合金镀层具有较高的摩擦系数和较差的耐磨性。相比之下 ,密配六方结构的合金镀层起到了很好的减摩和抗磨作用 ,其摩擦系数降低了 2 3,磨损率降低 1个数量级以上。The Ni-Co alloy coatings are electroplated from sulfate bath. The effects of Co content on the structure of the coatings are investigated, and further, the eff ects of phase structure on the tribological properties of the coatings are also studied. It is found from the experiments that the structure of the alloy coatin gs is converted from face-centered cube to hexagonal close-packed structure wi th increase of Co content. Under dry friction, the Ni-Co alloy coatings with fa ce-centered cube structure have higher friction coefficient and poorer wear abi lity, while those with hexagonal close-packed structure exhibit very good frict ion reducing effect and wear ability. Their friction coefficient decreases by 2/ 3 and wear rate reduces more than one order of magnitude.

关 键 词：合金镀层 摩擦磨损性能 相结构 面心立方结构 硫酸盐体系 实验发现 结构转变 抗磨作用 六方结构 摩擦系数 钴含量 干摩擦 耐磨性 系数和 数量级 磨损率 电镀 相比 

分 类 号：TQ153.2[化学工程—电化学工业] TB332[一般工业技术—材料科学与工程]