Title:
ニッケル基超合金
Document Type and Number:
Japanese Patent JP5039995
Kind Code:
B2
Abstract:
Nickel base superalloy consisting essentially of, in weight %, about 3% to about 12% Cr, up to about 15% Co, up to about 3% Mo, about 3% to about 10% W, up to about 6% Re, about 5% to about 7% Al, up to about 2% Ti, up to about 1% Fe, up to about 2% Nb, about 3% to about 12% Ta, up to about 0.07% C, about 0.030% to about 0.80% Hf, up to about 0.10% Zr, up to about 0.02% B, about 0.0005% to about 0.050% of an element selected from the group consisting of Y and Lanthanide series elements, and balance Ni and incidental impurities with a S concentration preferably of 2 ppm by weight or less. The nickel base superalloy pursuant to the invention possesses improved high temperature oxidation resistance. The nickel base superalloy as a substrate can be coated with an inwardly grown or outwardly grown diffusion aluminide bondcoat followed by deposition of a ceramic thermal barrier coating (TBC) on the bondcoat. Spallation of the TBC is significantly prolonged when the bondcoat comprises an outwardly grown, single phase diffusion aluminide bondcoat and the substrate comprises a superalloy pursuant to the invention.
Inventors:
Kennis S Murphy
Application Number:
JP2003333596A
Publication Date:
October 03, 2012
Filing Date:
September 25, 2003
Export Citation:
Assignee:
Howmet Corporation
International Classes:
C22C19/05; C23C10/48; C23C28/00; C23C30/00; C30B11/00
Domestic Patent References:
| JP5059474A | ||||
| JP7278709A | ||||
| JP2002167636A | ||||
| JP2002146460A | ||||
| JP61284545A |
Attorney, Agent or Firm:
Toru Tanabe