Method to improve the service life of zirconia-based coatings ap

Details Method to improve the service life of zirconia-based coatings ap Method to improve the service life of zirconia-based coatings ap

1998-02-27

2000-02-08

Bareford, Katherine A.

Coating processes

Spray coating utilizing flame or plasma heat

Metal oxide containing coating

427454, C23C 410

Patent

active

060225947

ABSTRACT:
A method for improving the quality of a zirconia-based coating deposited on a metal-based substrate is disclosed. The method comprises the step of plasma-spraying zirconia powder of substantially uniform particle size onto the substrate. The disclosure further relates to an improved powder source material for use in a plasma. The source material is zirconia powder having a uniform particle size, and optionally, a uniform particle density. The use of such a material results in improved thermal barrier coatings for various substrates, such as those found in a turbine engine.

REFERENCES:
patent: 4450184 (1984-05-01), Longo et al.
patent: 5477820 (1995-12-01), Rao

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