Title:
METHOD OF DEPOSITING ABRADABLE COATINGS UNDER POLYMER GELS
Document Type and Number:
WIPO Patent Application WO/2015/130362
Kind Code:
A3
Abstract:
A method of depositing abradable coating on an engine component (10) is provided wherein the engine component is formed of ceramic matrix composite (CMC) and one or more layers, including at least one environmental barrier coating (14), may be disposed on the outer layer of the CMC. An outermost layer of the structure may further comprise a porous abradable layer (30, 130) that is disposed on the environmental barrier coating and provides a breakable structure which inhibits blade damage. The abradable layer may be gel-cast on the component and sintered or may be direct written by extrusion process and subsequently sintered.
Inventors:
KIRBY GLEN HAROLD (US)
Application Number:
PCT/US2014/068384
Publication Date:
November 05, 2015
Filing Date:
December 03, 2014
Export Citation:
Assignee:
GEN ELECTRIC (US)
International Classes:
C23C28/04; C04B41/50; C04B41/87; C23C24/08; F01D5/28; F01D11/12
Foreign References:
| EP2287131A2 | 2011-02-23 | |||
| US20110027578A1 | 2011-02-03 | |||
| US5602197A | 1997-02-11 | |||
| US4201594A | 1980-05-06 | |||
| EP1997929A2 | 2008-12-03 |
Other References:
YOUNG A C: "GELCASTING OF ALUMINA", JOURNAL OF THE AMERICAN CERAMIC SOCIETY, BLACKWELL PUBLISHING, MALDEN, MA, US, vol. 74, no. 3, March 1991 (1991-03-01), pages 612 - 618, XP000202274, ISSN: 0002-7820, DOI: 10.1111/J.1151-2916.1991.TB04068.X
Attorney, Agent or Firm:
OVERBECK, Brian P. et al. (Global Patent Operation3135 Easton Turnpik, Fairfield CT, US)
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