一种有机/无机复合纳米铜添加剂的摩擦学性能

在实验室制备了一种复合型修饰剂修饰的油溶性纳米铜添加剂，粒径为1~7 nm。在四球摩擦磨损试验机上考察了该添加剂在HVIW H150基础油及SJ 5W/30汽油机油中的摩擦磨损性能。结果表明，含0.1%纳米铜添加剂的HVIW H150基础油具有良好的抗磨性能，可使基础油PB值提高30%以上，磨斑直径降低50%左右；在5W/30 SJ汽油机油中表现出明显的减摩性能，使油品的摩擦系数降低28%以上。这是由于纳米铜超强的延展性使其在润滑油中表现出优良的摩擦学性能。

TRIBOLOGICAL INVESTIGATION OF ORGANIC/INORGANIC COMPOUND COATED NANO-COPPER AS LUBRICATING OIL ADDITIVE

An organic compound coated copper nanoparticles with diameter about 1~7 nm were prepared and suppose to use as lube additive to reduce friction and wear as well as to increase load-carrying capacity. The tribological performance of this additive in HVIWH150 base oil and SJ 5W/30 gasoline engine oil was investigated by four-ball testing machine, respectively. Results showed that said nano-Cu additive could reduce wear and increase load-carrying capacity. When 0.1% nano-Cu additive was added into HVIWH150 base oil, the PB value of the formulated base oil was increased about 30%, and its wear scar diameter was decreased about 50%; SJ 5W/30 gasoline engine oil added 0.1% said additive, its friction coefficient was reduced about 28%. The analysis of the friction surface boundary film revealed that the improvement of antiwear and extreme-pressure properties of the formulated oil was due to the formation of a deposited film by copper nanoparticles having superior ductility.