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采用湿式球磨对多壁碳纳米管(MWNTs)预处理,通过化学镀制备Ni-P-MWNTs复合镀层;对45钢、传统Ni-P镀层和Ni-P-MWNTs复合镀层在干摩擦条件下的摩擦磨损性能进行考察和比较。结果表明,球磨后MWNTs长径比降低,长度均匀,且多数端部处于敞开状态。与45钢和Ni-P镀层相比,Ni-P-MWNTs复合镀层的减摩耐磨能力显著强化。当复合镀层中MWNTs的质量分数为0.74%~1.97%时,其摩擦因数和磨损率随MWNTs含量的增加而减少;对于MWNTs质量分数为1.97%的复合镀层,其摩擦因数和磨损率仅为0.08和6.22×10?15m3/(N·m)。复合镀层优良的摩擦磨损性能归因于MWNTs优异的力学性能和自润滑特性。
MWNTs pretreated by wet ball milling were prepared by electroless plating Ni-P-MWNTs composite coating; 45 steel, the traditional Ni-P coating and Ni-P-MWNTs composite coating under dry friction conditions Friction and wear properties were investigated and compared. The results show that the MWNTs have a reduced aspect ratio after milling and a uniform length with most of the ends open. Compared with 45 steel and Ni-P coating, Ni-P-MWNTs composite coating significantly enhance the anti-friction and wear resistance. When the mass fraction of MWNTs in the composite coating is between 0.74% and 1.97%, the friction coefficient and the wear rate decrease with the increase of the content of MWNTs. The friction coefficient and wear rate of composite coating with MWNTs mass fraction of 1.97% are only 0.08 And 6.22 × 10 ~ 15m3 / (N · m). The excellent tribological properties of the composite coating are attributed to the excellent mechanical properties and self-lubricating properties of MWNTs.