材料期刊网

Plots of corrosive wear loss with load and anodic polarization curves during friction were examined for duplex stainless steel (DSS) in 69% H2PO4 solution with or without Cl- by a pin-on-ring apparatus. Morphology of tracks and debris was observed in a scanning electron microscope. Variation of Vicker hardness of worn surface was also tested. The defects in wear subsurface were analysed by means of the positron annihilation technique (PAT) and a transmission electron microscope (TEM). The results show that the acceleration of chloride on corrosive wear of the steel is due to the brittle-fracture of the worn surface.