Process for modifying the surface of a ceramic core used on turbine parts comprises applying a ceramic-based material to the surface of the ceramic core using a direct scribing method according to a previously selected pattern

摘要

Modifying the surface (54) of a ceramic core (56) comprises applying a ceramic-based material (50) to the surface of the ceramic core using a direct scribing method according to a previously selected pattern. Independent claims are also included for: (a) Forming a cavity of selected size and shape on the surface of a channel of a metallic component; and (b) Metallic component produced by the process.