关键词: 涡轮泵零部件;冲蚀;分析

Abstract: The dynamic properties of surface pitting of the turbine pump metal parts of certain rocket engine and the properties of local damage and deformation of the nonmetal parts of the pump were investigated by means of optical microscope and electron microscope. The composition and construction of surface staning coatings of pump parts were measured with the Auger Electron Spectroscopic Analysis and Infrared Spectroscopic Analysis. The results showed that the surface pitting of metal parts and the local damage and deformation of nonmetal parts are all impingement erosion defects engendered by solid particles in speed flow and cavity collapse. The damage are mainly caused by machinery wear. In terms of the composition and construction of surface saining coatings, it seems that kin etic energy disspateS and is converted into heat energy when erosion occurs.

Key words: Turbine pump;Part;Impingement corrosion;Analyzing