Abstract:In order to select the wearresistant materials of the key parts and components of integrated turbine energy recovery machine,the friction pairs composed of TC4 titanium alloy with POM-C,POM-H,PEEK and PEEK-PVX were taken as the research object,the tribological behaviors in dry friction,pure water and seawater environments were studied on the vertical universal friction and wear testing machine.The friction coefficient and wear amount of each friction pair were obtained quantitatively,and the surface morphology of the friction samples was analyzed.The results show that in dry friction environment,the friction coefficient and wear amount of POM-C samples are the minimum,in the pure water and seawater environment,the friction coefficient and wear amount of PEEK-PVX samples are the minimum.The wear mechanism of TC4 titanium alloy with POM-H,POM-C and PEEK is adhesive wear,mainly in the form of smear and abrasion.The wear of TC4 titanium alloy with PEEK-PVX is slight,mainly in the form of slight abrasive wear.