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为了探讨聚酰亚胺粘结MoS2基固体润滑涂层在油介质中的摩擦学性能及其作用机理,采用MHK-500型摩擦磨损试验机对聚酰亚胺粘结MoS2基固体润滑涂层在4种油介质(RP-3煤油、SG 15W-40机油、0#柴油和液体石蜡)中的摩擦磨损性能进行了评价,并对其机理进行了初步探讨.结果表明:与干摩擦相比,涂层在4种油介质中的摩擦学性能均得到显著提高,其中涂层在柴油介质中抗磨性能的提高最为突出;同种油介质中,涂层在高速(2.56 m/s)、低载(1 120 N)下的耐磨性明显优于低速(1.54 m/s)、高载(2 120 N)下的耐磨性;在低速(1.54 m/s)、高载(2 120 N)下的煤油介质中,涂层表面的物理状态在摩擦过程中的变化最终导致涂层摩擦系数的起伏和较大的磨损率.
In order to investigate the tribological properties and mechanism of polyimide-bonded MoS2-based solid lubricating coatings in oil media, MHK-500 type friction and wear tester was used to test the polyimide-bonded MoS2-based solid lubricant coatings The friction and wear properties of four kinds of oil media (RP-3 kerosene, SG 15W-40 oil, 0 # diesel oil and liquid paraffin) were evaluated and the mechanism was discussed preliminarily.The results showed that compared with dry friction, The tribological properties of the coatings in four kinds of oil media were all significantly improved. Among them, the anti-wear performance of the coatings was the most prominent in the diesel media. In the same kind of media, the coatings exhibited high tribological properties at high speed (2.56 m / s) The abrasion resistance at loading (1 120 N) was significantly better than that at low speed (1.54 m / s) and high loading (2 120 N). At low speeds (1.54 m / s) ) Kerosene medium, the change in the physical state of the coating surface during the rubbing eventually leads to a fluctuation in the coefficient of friction of the coating and a high rate of wear.