Global Patent Index - EP 0985745 A1

EP 0985745 A1 2000-03-15 - Bond coat for a thermal barrier coating system

Title (en)

Bond coat for a thermal barrier coating system

Title (de)

Haftbeschichtung für wärmedämmendes Beschichtungssystem

Title (fr)

Couche de liaison pour système de revêtement de barrière thermique

Publication

EP 0985745 A1 (EN)

Application

EP 98307244 A

Priority

  • EP 98307244 A
  • JP 26927098 A

Abstract (en)

A thermal barrier coating system (20) for the surface of an article (22) designed for use in a hostile thermal environment, such as turbine, combustor and augmentor components of a gas turbine engine. The thermal barrier coating system (20) employs a bond coat (24) of a nickel aluminide alloy over which a thermal-insulating ceramic layer (26) is deposited. The nickel aluminide bond coat (24) contains zirconium, but is otherwise predominantly of the beta ( beta ) NiAl phase. The bond coat (24) is preferably deposited by a physical vapor deposition process (PVD), such as by magnetron sputtering, electron beam physical vapor deposition (EBPVD), jet vapor deposition (JVD) and plasma spray. The NiAl bond coat (24) with zirconium additions of between 0.05 and 0.5 atomic percent have been shown to exhibit drastically improved thermal fatigue life over prior art bond coats, with optimal results appearing to be obtained at or near 0.1 atomic percent zirconium. <IMAGE>

IPC 1-7 (main, further and additional classification)

C23C 28/00

IPC 8 full level (invention and additional information)

B23P 9/00 (2006.01); C23C 4/10 (2006.01); C23C 8/20 (2006.01); C23C 14/14 (2006.01); C23C 28/00 (2006.01)

CPC (invention and additional information)

C23C 28/00 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IT NL

EPO simple patent family

EP 0985745 A1 20000315; EP 0985745 B1 20060712; JP 2000096259 A 20000404; JP 3579262 B2 20041020

INPADOC legal status


2014-04-30 [REG DE R107] PUBLICATION OF GRANT OF EUROPEAN PATENT RESCINDED

- Document: DE 69835208

- Effective date: 20140430

2014-03-26 [27W] REVOKED

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2013-10-11 [REG DE R103] PATENT REVOKED BY EPO

- Document: DE 69835208

2013-03-20 [R26] OPPOSITION FILED (CORRECTION)

- Opponent name: SIEMENS AKTIENGESELLSCHAFT

- Effective date: 20070201

2008-06-02 [NLV4] NL: LAPSED OR ANULLED DUE TO NON-PAYMENT OF THE ANNUAL FEE

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- Effective date: 20080401

2007-07-02 [NLR1] NL: OPPOSITION HAS BEEN FILED WITH THE EPO

- Opponent name: SIEMENS AG

2007-04-25 [26] OPPOSITION FILED

- Opponent name: SIEMENS AG

- Effective date: 20070201

2007-01-26 [ET] FR: TRANSLATION FILED

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2006-07-12 [REG GB FG4D] EUROPEAN PATENT GRANTED

2003-01-02 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20021115

2000-11-22 [AKX] PAYMENT OF DESIGNATION FEES

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2000-03-15 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI