| 摘要 |
PURPOSE:To improve fretting abrasion resistance by coating the blade root portion of a turbine blade with short fiber reinforced composite material. CONSTITUTION:Metallic powder 2 as a matrix and short fiber 1 as a reinforcement are mixed. The mixture is fed in focused laser beams 5 by a feeder 3 and supplied to a blade root portion 4a of a turbine blade 4 to be fused and solidified. Thus, a coating layer is formed on the blade root portion to improve fretting abrasion resistance.
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