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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 alloy nano-composite brush coatings with different content of Al 2 O 3 particles were prepared by brush plating. The deposition rate, the content of nano-particles and the content of nano-Al 2 O 3 in the plating solution were tested by scanning electron microscopy, hardness tester and friction and wear tester, Effect of hardness and tribological properties. The results show that as the content of nano-Al 2 O 3 particles increases, the deposition rate of brush coating decreases, the surface morphology becomes smooth, the microhardness first increases and then decreases, and the depth of wear scar and friction coefficient decrease first and then increase. When the content of nano-Al 2 O 3 in the bath is 20 g / L, the coating has the best microstructure and properties.