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利用真空四球摩擦试验机系统考察了聚α-烯烃(PAO40,PAO10)和多烷基化环戊烷(MAC)2类合成碳氢油在空气、真空(压强小于6.0×10-4 Pa)和高纯氮气条件下的摩擦学性能,采用扫描电子显微镜(SEM)和非接触式三维表面轮廓仪观察了钢球摩擦表面的微观形貌,探讨2类合成碳氢油在空气、真空和高纯氮气中的润滑机理.结果表明:在空气中,由于连续的边界氧化膜和润滑油膜的存在,2类合成碳氢油的摩擦系数较低且能保持稳定,磨斑直径较小、磨痕表面光滑平整.在真空和高纯氮气中,由于润滑膜失效和剧烈温升,2类合成碳氢油的摩擦系数较高且剧烈波动,磨斑直径较大、表面可见明显的黏着磨损.
The effects of air, vacuum (pressure less than 6.0 × 10-4 Pa) and air pressure (pressure less than 6.0 × 10-4 Pa) on the mechanical properties of polyolefins (PAO40, PAO10) and polyalkylated cyclopentane (MAC) The tribological properties of high-purity nitrogen were investigated by scanning electron microscopy (SEM) and non-contact three-dimensional surface profilometer. The microstructure of the friction surface of the steel ball was investigated. The effects of two types of synthetic hydrocarbon oil in air, vacuum and high purity Nitrogen.The results show that in the air, the friction coefficient of the two types of synthetic hydrocarbon oil is low and stable due to the continuous boundary oxide film and lubricating oil film, and the diameter of the grinding spot is small, Smooth and smooth.In the vacuum and high-purity nitrogen, the friction coefficient of the two types of synthetic hydrocarbon oil fluctuated violently due to the failure of the lubricating film and the intense temperature rise, and the diameter of the grinding spot was larger, and the apparent adhesive wear was visible on the surface.