Directionally solidified thermal barrier coating

Details Directionally solidified thermal barrier coating Directionally solidified thermal barrier coating

1998-12-10

1999-11-23

Crispino, Richard

Coating apparatus

Projection or spray type

Applying solid particulate material

118 58, C23C 402, C23C 410

Patent

active

059893435

ABSTRACT:
A method and apparatus form a thermal barrier coating on a metal component. A molten thermal barrier coating powder is sprayed on the component in sweeping strokes. A plurality of overlapping solidified coating ribbons are deposited on the component and include a sequentially deposited surface ribbon forming sublayer ribbons therebelow. The surface ribbon is preheated at a spray site so that the sprayed molten powder remelts the surface ribbon at the spray site for sequentially welding the sequentially deposited surface ribbons to the sublayer ribbons.

REFERENCES:
patent: 5073433 (1991-12-01), Taylor
patent: 5688564 (1997-11-01), Coddet et al.
patent: 5705231 (1998-01-01), Nissley et al.
patent: 5830586 (1998-11-01), Gray et al.
"Development of Improved-Durability Plasma Sprayed Ceramic Coatings for Gas Turbine Engines", by I.E. Sumner, NASA Lewis Research Center, Cleveland, Ohio; and D. Ruckle, Pratt & Whitney Aircraft, East Hartford, Conn. Jun. 30-Jul. 2, 1980, pp. 4-13.
"Experimental and Theoretical Aspects of Thick Thermal Barrier Coatings for Turbine Applications", by G. Johner, V. Wilms, Hanau, West Germany and K.K. Schweitzer, P. Adam, Motoren-Und Turbinenion Munchen, Munchen, West Germany, pp. 155-165.
Patent application Ser. No. 08/681,558, filed Jul. 29, 1996, now U.S. Patent 5,830,586 (see above).

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