Study on the Tribological Behavior of C_(60)/C_(70) as an Oil Additive

Preparation of C60/C70 has been accomplished by operating a carbon arc in an atmosphere of helium. The C60/C70 mixtures are dispersed into the paraffin liquid by two ways, one is solid grinding (SG); another is solvent evaporation (SE) . The extreme pressure (EP) and antiwear behavior of C60/C70 as an oil additive are evaluated using a SRV Tester. The results showed that using the SE method to disperse C60/C70 into the paraffin liquid, the EP value can be increased by 3 times, the friction coefficient decreased from 0. 18 to 0. 11 and the wear is reduced too. It is suggested that the fine dispersed C60/C70 powder can be used in lubricating oil as an antifric-.tion and antiwear additive. The C60/C70 is worth to study further in the tribology research field.