PLATINUM ALUMINIDE COATING FOR COBALT BASE SUPERALLOY

摘要

PROBLEM TO BE SOLVED: To provide a method for strengthening oxidation resistance and hot gas corrosion resistance of parts made of a Co base alloy used to the high temperature part of a gas turbine engine. ;SOLUTION: Parts made of a Co base alloy are subjected to aluminide treatment, and a CoAl layer is formed on the surface. Next, a Pt layer is formed on the CoAl layer. The Pt layer is diffused into the CoAl layer, and a PtAl layer imparting oxidation resistance and hot gas corrosion resistance to the parts is formed.;COPYRIGHT: (C)2001,JPO