采用超声-电沉积方式制备Ni-Al2O3复合镀层.利用X-射线衍射仪、扫描电子显微镜、硬度仪以及摩擦磨损实验仪对复合镀层的组织结构、宏观残余应力、表面形貌、微观硬度以及摩擦磨损性能等进行研究.实验结果表明:适当的超声波作用使复合镀层基质金属Ni的晶粒细化,复合镀层的硬度提高,但也相应地增加了镀层的宏观残余应力;超声波-电沉积复合镀层的表面致密平整,镀层中粒子团聚现象减少,粒子分布更加均匀;超声-电沉积复合镀层的耐磨性明显优于单独电沉积复合镀层.
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