Tribological Performance and Lubrication Mechanism of Alkylimidazolium Dialkyl Phosphates Ionic Liquids as Lubricants for Si₃N₄-Ti₃SiC₂ Contacts

Table 1

Physical properties of the alkylimidazolium dialkyl phosphates ILs.

Lubricants	Properties
	Kinetic viscosity/mm^2·s^−1			Density/Kg·m^−3	TGA/°C (onset decomposition temperature)
	40°C	100°C	VI
PEE	138	17.1	129	1125	275
PBE	231	23.9	115	1038	281
POE	267	28.4	117	1016	274
Glycerol	246	13.7	4.9	1258	156
TBP	3.0	1.1	—	979	118

“—” Could not be calculated.