纳米Al_2O_3颗粒含量对Ni-Co基纳米复合电刷镀层组织和性能的影响（英文）  

Effects of n-Al_2O_3 Particles Content on Structure and Performance of Electro-Brush Plating Ni-Co Alloy Composite Coatings

作　　者：汪笑鹤[1] 吕镖[1,2] 胡振峰[1] 徐滨士[1] 

机构地区：[1]装甲兵工程学院机械产品再制造国家工程研究中心,北京100072 [2]东北大学,辽宁沈阳110004

出　　处：《稀有金属材料与工程》2016年第1期36-41,共6页Rare Metal Materials and Engineering

基　　金："973"Project(2011CB013403);National Natural Science Foundation of China(51505484)

摘　　要：采用电刷镀技术制备了不同Al_2O_3颗粒含量的合金纳米复合电刷镀层,使用扫描电镜、硬度测试仪和摩擦磨损试验机测试了镀液中纳米Al_2O_3颗粒含量对镀层的沉积速度、纳米颗粒含量、硬度和摩擦学性能的影响。结果表明,随着镀液中纳米Al_2O_3颗粒含量的增加,电刷镀层沉积速度降低、表面形貌平整,显微硬度先提高而后降低,磨痕深度和摩擦系数先减小后增大。当镀液中纳米Al_2O_3含量为20 g/L时,镀层具有最优的组织和性能。The composite electronic brush plating technique was used to prepare alloy nanocomposite coatings with different nano-Al2O3 particles contents. The effects of nanoparticles content in the electrolyte on the deposition rate, nanoparticles content in coating, microhardness and tribological property of composite coatings were investigated by scanning electron microscopy, microhardness tester and attrition testing machine. It is found that with the increase of nano-Al2O3 particles content in the electrolyte, the deposition rate of coatings drops, the surface morphology of the coating becomes flat, the microhardness first increases and then decreases, and wear scar depth and friction coefficient decrease first and then increase. When the nano-Al2O3 particles concentration in the electrolyte is 20 g/L, the coating reaches its optimized structure and performance.

关 键 词：纳米复合镀层 纳米颗粒 硬度 摩擦学性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]