Roughened bond coat for a thermal barrier coating system and met

Details Roughened bond coat for a thermal barrier coating system and met Roughened bond coat for a thermal barrier coating system and met

1998-11-24

2000-10-24

Jones, Deborah

Stock material or miscellaneous articles

All metal or with adjacent metals

Microscopic interfacial wave or roughness

428652, 428655, 428680, 428687, 428937, 427456, C23C 406, C23C 412

Patent

active

061364533

ABSTRACT:
A bond coat and method of forming a bond coat for a thermal barrier coating system are set forth. The bond coat is a roughened bond coat and comprises a layer possessing an uneven, undulated, and irregular surface. The layer is formed of a metal powder mixture disposed on a substrate, such as a turbine component, by high velocity oxygen fuel spraying. The metal powder mixture comprises at least one of a first powder having a first melting point and a second powder having a second melting point that is higher than the first melting point. The bond coat's uneven, undulated, and irregular surface enhances prevention of de-bonding of elements in a thermal barrier coating system.

REFERENCES:
patent: 4173685 (1979-11-01), Weatherly
patent: 5236745 (1993-08-01), Gupta et al.
patent: 5403669 (1995-04-01), Gupta et al.
patent: 5498484 (1996-03-01), Duderstadt
patent: 5817372 (1998-10-01), Zheng
patent: 5863668 (1999-01-01), Brindley et al.

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