Abstract: The corrosive wear rate of matallic materials is not equal to the addition of corrosive and wear rates.This phenomenon is due to the interaction between the corrosion and wear.But only a few of research reports described the interaction quantitatively and dealt with its essence.If some environmental parameters,such as temperature,pressure,are ignored in the system of corrosive wear,it can be considered that corrosive wear of metallic materials is caused by electrochemical and mechanical factors simultaneously.Under the given conditions,experiments of corrosive wear on 45 # carbon steel and 2 Cr13 stainless steel were carried out with a series of 20% (volume fraction) silica sand -slurries containing variant concentraction of sulphuric acid,hydrochloric acid and nitric acid in an erosion tester.The resuults showed that the corrosive wear rate is greater than the sum of the corrosion and the wear rates on the tested materials,it proved that the existence of the interaction between corrosion and wear during corrosive wear process.It was observed that the value of inteaction of corrosive wear increased with increasement of corrosion rate or wear rate.Based on the analysis of main factors effecting the interaction of corrosive wear,an interaction diagram which indicates the relation between the interaction of corrosive wear and corrosive rate or wear rate was created.It can be used to analyze the influences of electrochemical and mechanical factors on the interaction of corrosive wear,to compare the sensitivity of interaction of corrosive wear to electrochemical and mechanical factors among variant materials,and to guide the evaluation of thee corrosive wear behaviour of materials.