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研究了Cu、Ag及Au等金属基体上二烷基二硫代磷酸修饰MoS2纳米微粒LB膜的摩擦学性能,用红外显微镜分析LB膜在摩擦过程中的结构变化,用电子探针分析考察不同金属基体上LB膜的磨痕形貌.结果表明:DDP修饰MoS2纳米微粒LB膜可有效降低Ag和Cu与GCr15钢对摩时的摩擦系数;该LB膜极易向对偶转移并在摩擦过程中发生摩擦化学变化,主要包括无序化转变及修饰剂的部分分解;无机纳米核起主要承载和抗磨作用.Cu基体上的LB膜耐磨寿命较Ag基体上LB膜的耐磨寿命高100倍,这主要因LB膜与Ag基体的结合较弱.
Tribological properties of dialkyldithiophosphate-modified MoS2 nanoparticle LB films on metal substrates such as Cu, Ag and Au were investigated. Structural changes of LB films during rubbing were analyzed by infrared microscopy. Wear scar morphology of LB film on metal substrate. The results showed that the DDP modified MoS2 nanoparticle LB film can effectively reduce the friction coefficient of Ag and Cu with GCr15 steel; the LB film can easily transfer to the dual and frictional chemical changes occur during the friction, including the disorder transformation And modifier partially decomposed; inorganic nano-core from the main bearing and anti-wear effect. The wear life of LB film on Cu substrate is 100 times higher than that of LB film on Ag substrate, which is mainly due to the weak binding of LB film and Ag substrate.