Abstract: The performances of electrochemistry corrosion and erosion-wear resistant for type materials used as turbine parts were investigated in erosion, and the proportion of pure wear and pure corrosion and the promoting weight of wear and corrosion each other in the failure of materials were also distinguished. The anti-erosion properties and the influence of the synergetic action between erosion and corrosion has been studied, and the failure mechanism has been analyzed. The test results show that the erosion loss rates of 0Cr13Ni5Mo stainless steels were least and 55 steel wear most among the total test material at various erosion speeds. Among the total wear weight loss, pure wear is dominant. The weight loss rate of pure wear of 55 steel is small, but corrosion and the synergetic action between erosion and corrosion is increased with the increasing erosion rates, the weight loss rate of pure corrosion is small, but the weight loss of pure wear is great, so the application of two materials is limited.

Key words: Corrosion, Erosion-wear, Synergeticaction