远红外纳米陶瓷粉润滑油添加剂的摩擦学性能

摘要

为了研究远红外纳米陶瓷粉作为添加剂对润滑油摩擦学性能的影响,将其表面改性后添加到牌号为150SN的基础油中,利用四球摩擦试验机对比研究陶瓷粉润滑油和基础油的摩擦学性能、摩擦系数和对应钢球的磨斑直径变化以及摩擦磨损机理.结果表明:两者的摩擦系数起始阶段相差不大,后期陶瓷粉润滑油的摩擦系数大幅减小;陶瓷粉润滑油的平均摩擦系数随着陶瓷粉添加量的增加先减小后增大,陶瓷粉添加质量分数为1.0％时,平均摩擦系数达到最小,相对基础油的变化率达-31.6％;陶瓷粉润滑油的磨斑直径远远小于基础油的,当陶瓷粉的添加质量分数为1.0％时,磨斑直径最小.%To study the effect of far infrared nano-sized ceramic powders as lubricant additives on tribological properties,by adding the far infrared nano-sized ceramic powders into base oil with brand of 150SN after surface modification treatment,tribological properties were studied by a four-ball friction tester.The friction coefficient and wear scar diameters of lubricants without and with far-infrared nano-sized ceramic powders were analyzed.The mechanism of friction and wear was explored.The results show that the friction coefficients of base oil and far infrared nano-sized ceramic powders lubricant have little difference at initial stage.The friction coefficient of far infrared nano-sized ceramic powders lubricant begins to reduce in the late stage of friction tests,which is far less than the fiiction coefficient of base oil.The average fiiction coefficient of far infiared nano-sized ceramic powders lubricant decreases first and then increases with the increase of additive amount of far-infrared nano-ceramic powders.When the additive mass fraction of far-infrared nano-sized ceramic powders is 1.0％,the average friction coefficient of the lubricant achieves the minimum,and its change rate relative to the base oil reaches-31.6％.The wear scar diameters of far infrared nano-sized ceramic powders lubricant are much less than those of the base oil,the wear scar diameter achieves the minimum when the additive mass fraction of far-infrared nano-sized ceramic powders is 1.0％.