润滑添加剂的磨损自补偿摩擦学效应  

Tribological Effect of Lubricating Oil Additive EDT with Wear-Self-Compensation Function

作　　者：方建[1] 赵源[1] 

机构地区：[1]武汉材料保护研究所,湖北武汉430030

出　　处：《材料保护》2006年第6期18-20,共3页Materials Protection

摘　　要：过去研究自制的润滑添加剂EDT,对磨损的测量采用测长法,不能反映摩擦表面是否成膜,也无法判断其是否具有磨损自修复功能。为此,用面/面接触的摩擦试验方式研究了添加剂EDT的磨损自补偿修复效应、减摩效应和抑制油温温升效应,并与传统的极压抗磨添加剂T202的摩擦学性能作了对比。结果表明:EDT在摩擦副的动、静件摩擦表面均形成了磨损自修复膜,形成了负磨损,且磨损量随时间的延长趋于稳定;磨损自修复膜具有减小和稳定摩擦系数的作用:摩擦系数极低并随时间的延长基本稳定,在294 N载荷下运行240 m in时其值为0.011 6,比N46-T202的值降低了64.5%。磨损自修复膜具有减小摩擦发热、抑制油温上升的作用:油温温升为15℃,比N46-T202的降低了68.1%。The wear-self-repairing effect,friction-reducing effect,and retardance in lubricating oil temperature rising of lubricating oil additive EDT were investigated,and the tribological properties of the additive EDT were compared to that of N46-T202.Thus a four-ball tester was performed to carry out the friction and wear tests in a ring-on-ring plane contact configuration.It was found that both the rotating and stationary rings had small wear that tended to stabilize with increasing test duration,which was attributed to the formation of wear-self-compensation film that led to negative wear.Moreover,the wear-self-compensation film was able to reduce and stabilize the friction coefficient as well,with the friction coefficient at a load of 294 N and test duration of 4 h to be 0.012,smaller than that of N46-T202 by 64.5%.In addition,the wear-self-compensation film contributed to relieve the friction-induced heat and restrain the temperature rising of the lubricating oil as well,with the temperature rising of the lubricating oil at 294 N to be 15 ℃,smaller than that of(N46-T202) by 68.1%.

关 键 词：润滑添加剂 摩擦学效应 磨损自补偿 磨损自修复 

分 类 号：TH117.2[机械工程—机械设计及理论]