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采用SRV摩擦磨损试验机考察了激光改性球墨铸铁(QT450-10)的抗磨性能。结果表明,激光处理的球墨铸铁具有理想的表面形貌和较高的表面硬度,在润滑油添加剂的作用下,其抗磨性能提高1～2个数量级。对常用的6种添加剂的测试发现,其抗磨能力依次为二烷基二硫代磷酸锌(ZDDP)=二烷基二硫代磷酸钼(MoDTP)>磷酸三甲酚酯(TCP)>硼化油酸甘油酯(BOG)>硫化异丁烯(SO)>氯化石蜡(CP)>液体石蜡(LP),承载能力顺序与此类似。同时采用SEM和EDS对磨斑表面形貌和元素的面分布进行了研究。
The abrasion resistance of laser modified ductile iron (QT450-10) was investigated by SRV friction and wear tester. The results show that the laser-treated ductile iron has the ideal surface morphology and high surface hardness. The anti-wear performance of the ductile iron increases by 1-2 orders of magnitude with the lubricant additive. The anti-wear abilities of ZDDP = molybdenum dialkyldithiophosphate (MoDTP)> tricresyl phosphate (TCP)> boride Glyceryl oleate (BOG)> Sulfurized isobutylene (SO)> Chlorinated paraffin (CP)> Liquid paraffin (LP), with similar loading capacity. At the same time, SEM and EDS were used to study the surface morphology and the surface distribution of the elements.