纳米陶瓷润滑油添加剂润滑机制研究

Study on the Lubrication Mechanism of the Ceramics Nanoparticles Lubricant Additives

研究了纳米陶瓷润滑油添加剂的润滑机制。采用四球试验机考察了纳米陶瓷润滑油的抗磨性能和极压性能,利用NT场致发射扫描式电子显微镜、高分辨率扫描电子显微镜、X射线光电子能谱仪,观察了磨损表面的纳米粒子形貌,分析了磨损表面的形貌及表面元素成分。结果表明,纳米陶瓷润滑油润滑时,摩擦表面的磨斑很光滑,磨斑表面有Si3N4存在;纳米陶瓷添加剂具有很好的抗磨和极压性能;纳米陶瓷粒子具有"滚珠效应"。

The lubrication mechanism of the ceramics nanoparticles lubricant additives was analyzed. The extreme pressure and antiwear performances of ceramics nanoparticles lubricant was studied by four-ball test machine. The nanoparticles on the wear surface were observed by NT field emission scanning electron microscopy. Morphology and element composition of the worn surface were analyzed by high-resolution scanning electron microscopy and X-ray photoelectron spectroscopy. The results show that the worn surface is very smooth under the lubrication of ceramics nanoparticles lubricant, and Si3N4 is found on the worn surface. The ceramics nanoparticles lubricant has good antiwear and extreme pressure performance, the ceramics nanoparticles fulfils the function of ball.