Abstract:In this study,PI/ MoS2 lubrication coating was deposited on titanium alloy. This coating was exposed
to a highly aggressive humidity durability test, test conditions were 70℃,98% relative humidity for 27 days. The
effects of hygrothermal on the chemical structure of the binder were studied by ATR-FTIR and FTIR. And the changes
of surface chemical components were investigated by XPS. The friction and wear behaviors of the coatings after hygrothermal
test were studied by ball-on-disc tribometer. Pull off adhesive tester was used to evaluate the adhesion
strength of the coating. The results indicated that the treatment caused the PI resin at the surface of the coating to be
corroded, part of the resin in the coating hydrolyzed and the MoS2 at the surface to be oxidized. The wear life decreased
13% in vacuum and 16% at atmophere environment. The friction coefficient increased more greatly in the atmospheric
environment. Adhesion of the films decreased slightly.
