Title:
FUNCTIONALLY GRADED THERMAL BARRIER COATING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2015/013005
Kind Code:
A3
Abstract:
A functionally graded thermal barrier coating (30) formed as a plurality of layers (34, 36 44, 46) of materials deposited by a powder deposition process wherein the composition of the various layers changes across a thickness of the coating. A composition gradient may exist within a single layer (58) due to the buoyancy of ceramic particles (62) within a melt pool (56) of bond coat material (64). The powder deposition process includes powdered flux material (20) which melts to form a protective layer of slag (28) during the deposition process.
Inventors:
BRUCK GERALD J (US)
KAMEL AHMED (US)
KAMEL AHMED (US)
Application Number:
PCT/US2014/044816
Publication Date:
May 14, 2015
Filing Date:
June 30, 2014
Export Citation:
Assignee:
SIEMENS ENERGY INC (US)
International Classes:
C23C28/00; C23C24/10; C23C28/02; F01D5/28
Foreign References:
| CN102441672A | 2012-05-09 | |||
| EP1295970A1 | 2003-03-26 | |||
| US20130136868A1 | 2013-05-30 | |||
| EP0229522A2 | 1987-07-22 | |||
| EP0905280A2 | 1999-03-31 |
Other References:
YO-SEUNG SONG ET AL: "High-temperature properties of plasma-sprayed coatings of YSZ/NiCrAlY on Inconel substrate", MATERIALS SCIENCE AND ENGINEERING A: STRUCTURAL MATERIALS:PROPERTIES, MICROSTRUCTURE & PROCESSING, LAUSANNE, CH, vol. A332, no. 1-2, 1 July 2002 (2002-07-01), pages 129 - 133, XP002374260, ISSN: 0921-5093, DOI: 10.1016/S0921-5093(01)01735-X
LIN X ET AL: "Microstructure and phase evolution in laser rapid forming of a functionally graded Ti-Rene88DT alloy", ACTA MATERIALIA, ELSEVIER, OXFORD, GB, vol. 54, no. 7, 1 April 2006 (2006-04-01), pages 1901 - 1915, XP027889355, ISSN: 1359-6454, [retrieved on 20060401]
KAMRAN AAMIR MUMTAZ ET AL: "Laser melting functionally graded composition of Waspaloy(R) and Zirconia powders", JOURNAL OF MATERIALS SCIENCE, KLUWER ACADEMIC PUBLISHERS, BO, vol. 42, no. 18, 3 June 2007 (2007-06-03), pages 7647 - 7656, XP019528803, ISSN: 1573-4803, DOI: 10.1007/S10853-007-1661-3
LIN X ET AL: "Microstructure and phase evolution in laser rapid forming of a functionally graded Ti-Rene88DT alloy", ACTA MATERIALIA, ELSEVIER, OXFORD, GB, vol. 54, no. 7, 1 April 2006 (2006-04-01), pages 1901 - 1915, XP027889355, ISSN: 1359-6454, [retrieved on 20060401]
KAMRAN AAMIR MUMTAZ ET AL: "Laser melting functionally graded composition of Waspaloy(R) and Zirconia powders", JOURNAL OF MATERIALS SCIENCE, KLUWER ACADEMIC PUBLISHERS, BO, vol. 42, no. 18, 3 June 2007 (2007-06-03), pages 7647 - 7656, XP019528803, ISSN: 1573-4803, DOI: 10.1007/S10853-007-1661-3
Attorney, Agent or Firm:
RYAN, Daniel, J. et al. (3501 Quadrangle Blvd. Ste 23, Orlando FL, US)
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