纳米金刚石/铜基复合材料的摩擦磨损性能研究
首发时间:2007-04-16
摘要:纳米金刚石具有良好的润滑性及抗磨损性能。将纳米金刚石弥散分布到金属基体中可以得到低摩擦耐磨性良好的金属基复合材料。本文采用粉末冶金的方法制备纳米金刚石弥散分布的铜基复合材料,并对复合材料的微观组织及摩擦磨损性能进行了研究。在MM—200型磨损试验机上对块状试样进行油磨实验,对磨材料为GCr15钢。结果表明:纳米金刚石均匀的弥散分布在铜基体上;随着纳米金刚石含量的增加,铜基复合材料的摩擦磨损性能得到了明显改善。此外,本文还对纳米金刚石/铜基复合材料在油磨过程中的磨损机理进行了探讨。
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Tribological behavior of nanodiamond dispersed Cu composites
Abstract:Nanodiamond (ND) exhibits excellent lubrication and good wear resistance properties. In the present study, ND dispersed copper composites were fabricated by powder metallurgy method. The microstructures and tribological properties under oil sliding conditions of the Cu composites with various ND content were investigated. The oil sliding tests were carried out with GCr15 steel ring rotating against block-shaped samples. The results showed that the ND particles were homogeneously dispersed in the copper matrix. The anti-friction and wear resistance of the Cu composites were dramatically improved with increasing the weight fractions of ND. Besides, the mechanism of ND on reducing the friction and wear of the composites was discussed.
Keywords: Nanodiamond(ND) Copper matrix composite Tribological properties
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No.1222511138111767****
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