论文部分内容阅读
考察了钛酸钾晶须对石墨 硼酸系固体润滑膜摩擦磨损性能的影响,采用扫描电子显微镜观察分析了不同温度下润滑膜试样磨损表面形貌.结果表明:石墨 硼酸及石墨 硼酸 钛酸钾晶须固体润滑膜在室温下同不锈钢配副的摩擦系数约为0.08,耐磨寿命(滑动摩擦行程)保持在15000m以上;在300℃下的初始摩擦系数变化不大,在500℃下摩擦系数变化较大;但在摩擦初期2种固体润滑膜的摩擦系数无明显差别;随着摩擦过程的进行,不含钛酸钾晶须的润滑膜试样的摩擦系数在短时间内迅速增大,而含钛酸钾晶须试样的耐磨寿命比不含钛酸钾晶须试样的高2倍.这是由于钛酸钾晶须增强了固体润滑膜的强度及其在底材表面和附着力所致.
The effects of potassium titanate whisker on the friction and wear properties of graphite boric acid solid lubricant films were investigated and the wear surface morphology of lubricant film samples at different temperatures was observed by scanning electron microscopy.The results showed that graphite boric acid and graphite potassium titanate titanate The coefficient of friction of the whisker solid lubricant film with stainless steel pair is about 0.08 at room temperature, and the wear life (sliding friction stroke) is maintained at 15000m. The initial friction coefficient at 300 ℃ has little change. The coefficient of friction However, the friction coefficient of the two kinds of solid lubricating films did not change significantly in the early stage of friction. As the friction process progressed, the friction coefficient of the sample without the potassium titanate whiskers increased rapidly in a short time, The potassium titanate whisker samples wear life than potassium titanate whisker samples 2 times higher.This is due to potassium titanate whisker enhanced the strength of the solid lubricant film and the substrate surface and Adhesion due.