Tribochemistry of Ionic Liquid Lubricant on Magnetic Media

Table 4

Fiction coefficients and melting points of the lubricants with the molecular structure of the amine having 18 carbon chains.

Lubricant number	Structure of lubricant	Friction coefficient	Melting point/°C
20 (stearyl)	C18H37 NH2	0.17	38–40
22 (oleyl)	C18H35 NH2	0.20	<30
23 (linolenyl)	C18H31 NH2	0.25	<30
24 (methyl stearyl)	C18H37 NHCH3	0.19	79–82
25 (dimethyl stearyl)	C18H37 N(CH3)2	0.20	55–57
26 (distearyl)	(C18H37)2NH	0.21	51–55
27 (phenyl stearyl)	C18H37 NHC6H5	0.30	31–33