Patent Number: 6,254,756

Title: Preparation of components having a partial platinum coating thereon

Abstract: A curved component such as a turbine airfoil, shroud, or combustor centerbody is prepared with a platinum or a platinum-aluminide protective coating over only a portion of the surface thereof. The coating may serve as an environmental coating, or as a bond coat of a thermal barrier coating system. The partial coverage is achieved by depositing platinum only over a portion of the surface of the component, typically including the concave portion in the case of an airfoil, optionally depositing an aluminum layer, and optionally interdiffusing the platinum and aluminum layers.

Inventors: Maricocchi; Antonio F. (Loveland, OH), Wustman; Roger D. (Loveland, OH), Clarke; Jonathan P. (West Chester, OH), Mantkowski; Thomas E. (Madeira, OH), Fargher; David G. W. (Fairfield, OH), Conner; Jeffrey A. (Hamilton, OH)

Assignee: General Electric Company

International Classification: C23C 10/00 (20060101); C23C 10/58 (20060101); C25D 5/02 (20060101); C25D 7/00 (20060101); C23C 4/00 (20060101); C23C 28/00 (20060101); F01D 5/28 (20060101); C25D 005/02 (); C25D 005/50 ()

Expiration Date: 07/03/2018