| abstract |
PURPOSE: To form a surface modified layer high in erosion resistance on an area easily subjected to erosion at the front edge part in a turbine blade made of a Ti allay. n CONSTITUTION: An area easily subjected to erosion at the front edge part 4 is irradiated with a laser beam 14 and is melted and solidified into a spot shape. At the same time, oxygen 16 is sprayed thereon in the process of melting, and these operations are scanned over the whole of the prescribed area, by which a surface modified layer 5b in which oxygen has been entered into solid soln. in a base metal and having high hardness and excellent erosion resistance can be obtd. n COPYRIGHT: (C)1992,JPO&Japio |