Comprehensive Experimental Study on Thermal Erosion Characteristics of Typical Gas Turbine Blades

During the operation of gas turbines, erosion and wear were induced by high temperature dusty gas inevitably on the surface of the turbine blades, which damages the aerodynamic performance and may even result in the failure of the components and equipment, leading to the decrease of the economy and reliability. Under the experimental conditions, the following results were obtained by comparing erosion rate change of the base steels(1Cr12Mo, X20Cr13, 2Cr12NiMo1W1V, and GH738) under different temperature, different attack angle, and different particle size of quartz sand grains:the corrosion resistance of 1Cr12Mo is better than that of the other three substrates at 200~300℃. The erosion resistance of 2Cr12NiMo1W1V and GH738 is better at 400℃ compared with the other two. Moreover, the erosion resistance of 2Cr12NiMo1W1V is better than that of GH738 at 500℃.