CORROSIVE WEAR BEHAVIOUR OF ALLOY CD-4MCu IN PHOSP(?)ORIC ACID

摘要

The corrosion rate,together with corrosive wear and corrosion coefficient under load,ofalloy CD-4MCu in 69% H₃PO₄ or 69% H₃PO₄+500 ppm NaCl solution measured,andthe morphology of their wear tracks was then observed by SEM.The alloy CD-4MCu isrevealed to be superior in corrosive wear resistance to stainless steel 304 and even toCarpenter 20Cb3,a high corrosion resisting alloy.From its features of duplex phasestructure,it could be suggested that the weight loss related to mechanical factor wasimproved by existence of austenitic phase due to its deformation strengthening.