Author(s): LI Peng, ZHANG Dong-heng, CHENG Liang, XIONG Jing
Pages: 30-33
Year: 2015 Issue:  12
Journal: Hydraulics Pneumatics & Seals
Keyword:  thiophosphate; base oil; friction-reducing; anti-wear; QCM-D;
Abstract: In this report, friction-reducing and anti-wear properties of four kinds of thiophosphate in different base oils were investigated us-ing infrared (IR), CETR UMT-3 Multi-Specimen Test System, Scanning electron microscope (SEM). The results show that friction-reducing property of thiophosphate was much better in Yubase 6 and PAO base oils. Anti-wear property of thiophosphate in Yubase 6 is superior to that in PAO and PAG. The adsorption behavior of thiophosphate on stainless steel surface in hexane and ethanol was investigated using a Quartz Crystal Microbalance with Dissipation monitoring (QCM-D). The adsorption film of thiophosphate in hexane was much more stable. It's not easy to desorb for thiophosphate in hexane. Thus, friction-reducing and anti-wear properties of thiophosphate in mineral oil was better.