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本研究采用粉末冶金方法制成一种用于动密封的材料,以嵌镶块形式嵌镶于转动间隙处定子的燕尾槽中,密封转动间隙,能有效地阻止燃气的额外流失,从而提高发动机功效2～3%。而且,当转子和定子间发生摩擦时,嵌镶块被磨损而转动部件免受损伤。所研制出来的材料具有一系列优良性能,如良好的耐磨性、润滑性、密封性、抗蚀性和适宜的物理机械性能。已成功地用于航空燃气涡轮发动机之动密封。
In this study, a method of powder metallurgy was used to make a material for dynamic sealing, embedded in the form of a mosaic block in the dovetail groove of the stator at the rotating clearance to seal the rotating clearance, which can effectively prevent the extra loss of the gas and improve the performance of the engine Efficacy of 2 to 3%. Also, when friction occurs between the rotor and the stator, the insert is abraded to rotate the component from damage. The developed material has a series of excellent properties, such as good wear resistance, lubricity, sealing, corrosion resistance and suitable physical and mechanical properties. Has been successfully used for dynamic sealing of gas turbine engines.