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将高碱值磺酸钙清净剂(TBN>400)进行硼化反应改性处理并用红外光谱仪对其胶核成分进行了对比表征,同时利用热分析仪对比了硼化改性处理前后磺酸钙清净剂的热稳定性.采用SRV摩擦磨损试验机和四球摩擦磨损试验机分别考察了高碱值磺酸钙以及硼化改性高碱值磺酸钙清净剂作为复合锂基润滑脂添加剂对钢-钢摩擦副摩擦学性能的影响.利用扫描电子显微镜(SEM)及光电子能谱(XPS)对磨损表面进行了分析.结果表明:高碱值磺酸钙以及硼化改性高碱值磺酸钙清净剂均能显著提高复合锂基润滑脂的减摩抗磨能力;复合锂基润滑脂分别含有高碱值磺酸盐以及硼化改性高碱值磺酸盐清净剂润滑下的钢块磨损形貌及表面润滑膜组成存在明显差异,这种差异决定了硼化改性高碱值磺酸盐清净剂作为复合锂基润滑脂添加剂表现出更为优异的极压抗磨性能.
The overbased calcium sulfonate detergent (TBN> 400) was modified by boronization and its core composition was characterized by infrared spectroscopy. The thermal analysis instrument was used to compare the calcium sulfonate The thermal stability of detergent.Using SRV friction and wear testing machine and four ball friction and wear testing machine were investigated overbased calcium sulfonate and boric acid modified overbased calcium sulfonate detergent as a lithium complex grease additives on steel - Tribological Behavior of Steel Friction Pair. The wear surface was analyzed by scanning electron microscopy (SEM) and photoelectron spectroscopy (XPS). The results showed that the overbased calcium sulfonate and borinic modified overbased sulfonic acid Calcium detergent can significantly improve the anti-friction and anti-wear lithium complex grease; lithium complex grease containing overbased sulfonate and borated modified overbased sulfonate detergent lubricated steel Wear morphology and surface lubrication of the film there are significant differences in the composition of this difference determines the boron modified modified overbased sulfonate detergent as a lithium complex grease additive exhibits more excellent extreme pressure antiwear performance.