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研究了纳米金刚石粉对复合电刷镀镀层形成速率、显微硬度和耐磨性的影响;测试了在不同的热处理温度、载荷及金刚石粉含量下复合刷镀层的耐磨性能;分析了复合镀层的磨损机理。结果表明:镀层的磨损体积损失均随热处理温度的升高而下降,并在400℃时达到最小值;载荷增大,磨损体积损失增大;当纳米金刚石加入量为20～30 g/L时,镀层的耐磨性最好。复合镀层提高耐磨性的原因在于复合粒子在基体金属表面形成突起,起到了支撑载荷、避免粘着磨损及减小摩擦系数的作用。
The effects of nano-diamond powder on the formation rate, microhardness and wear resistance of composite brush plating were studied. The wear resistance of composite brush coating was tested under different heat treatment temperature, load and diamond content. The effects of composite coating Wear mechanism. The results show that the wear volume loss of the coating decreases with the increase of the heat treatment temperature and reaches the minimum value at 400 ℃. The load increases and the volume loss of the wear increases. When the nano-diamond content is 20 ~ 30 g / L , The best wear-resistant coating. Composite coating to improve the wear resistance of the reason is that the composite particles in the matrix metal surface protrusions, played a supporting load, to avoid adhesion wear and reduce the friction coefficient.