Title:
白金アルミ化物の拡散コーティングと断熱コーティングシステム
Document Type and Number:
Japanese Patent JP4060911
Kind Code:
B2
Abstract:
A CVD outwardly grown platinum aluminide diffusion coating on a nickel or cobalt base superalloy substrate wherein the platinum modified aluminide diffusion coating is modified to include silicon, hafnium, and optionally zirconium and/or other active elements (e.g. Ce, La, Y, etc.) each in a concentration of about 0.01 weight % to about 8 weight % of the outer additive (Ni,Pt)(Al,Si) layer of the coating. A particular coating includes about 0.01 weight % to less than 2 weight % of each of silicon, hafnium, and zirconium in the outer additive layer, preferably with a Hf/Si ratio less than about 1 and, when Zr also is present, a Hf+ Zr/Si ratio of less than about 1. A coating microstructure is provided characterized by an inner diffusion zone or region adjacent the substrate and the outer additive (Ni,Pt)(Al,Si) layer including hafnium silicide second phase particles or regions dispersed throughout the outer additive layer of the coating.
Inventors:
Bruce M. Warnes
Daniel El. Near
David Sea.Punora
William C. Busta
Daniel El. Near
David Sea.Punora
William C. Busta
Application Number:
JP21013497A
Publication Date:
March 12, 2008
Filing Date:
July 18, 1997
Export Citation:
Assignee:
Homet Research Corporation
International Classes:
C23C10/28; C23C10/02; C23C10/08; C23C14/14; C23C16/06; C23C16/08; C23C26/00; C23C28/00
Domestic Patent References:
| JP3044484A | ||||
| JP6508400A | ||||
| JP5247569A | ||||
| JP59145777A | ||||
| JP60248880A | ||||
| JP1159376A | ||||
| JP63183175A |
Attorney, Agent or Firm:
Yoshimi Saigo