论文部分内容阅读
将自制MoS2纳米片(30~70nm)和市售微米MoS2(325目)分别添加到脲基润滑脂中,在MQ-800型四球摩擦磨损试验机上考察了2种添加剂对脲基润滑脂摩擦学性能的影响;采用扫描电子显微镜考察了钢球磨损表面的形貌,并采用X射线能谱仪(EDS)测定磨损后的表面成分。结果表明,MoS2纳米片作为脲基润滑脂添加剂不仅具有良好的减摩抗磨作用,还能使脲基润滑脂在高负载下具有良好的润滑性能;MoS2纳米片在摩擦副表面形成MoS2吸附膜,增强了脲基润滑脂的抗磨、减摩和极压性能,从而更好地保护摩擦表面。
The self-made MoS2 nanosheets (30 ~ 70nm) and the commercially available micrometer MoS2 (325 mesh) were added to the urea-based grease. The tribological properties of the two additives on urea-based grease were investigated on an MQ-800 four-ball friction and wear tester The surface morphology of ball wear surface was investigated by scanning electron microscopy. The worn surface composition was determined by X-ray photoelectron spectroscopy (EDS). The results show that MoS2 nanosheets not only have good anti-friction and anti-wear properties, but also have excellent lubricity under high load. MoS2 nanosheets form MoS2 adsorption film on the surface of friction pair , Which enhances the antiwear, antifriction and extreme pressure properties of urea based greases to better protect the friction surfaces.