Erosion-resistant thermal barrier coating

Details Erosion-resistant thermal barrier coating Erosion-resistant thermal barrier coating

1992-10-27

1994-09-27

Look, Edward K.

Coating processes

Coating by vapor, gas, or smoke

Plural coatings applied by vapor, gas, or smoke

4274193, C23C 1600

Patent

active

053505999

ABSTRACT:
An article is protected by a thermal barrier coating system. The article includes a substrate having an outer surface and a thermal barrier coating system deposited upon the substrate. The thermal barrier coating system includes a porous region wherein the ceramic is present as a porosity-containing columnar grain structure extending substantially perpendicular to the substrate surface, and an erosion-resistant densified region overlying the porous region. The thermal barrier coating is preferably applied by rotating the substrate past a deposition source to deposit the columnar grains, and then halting or slowing the rotation while continuing the deposition of the erosion-resistant region.

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patent: 4676994 (1987-06-01), Demaray
patent: 4880614 (1989-11-01), Strangman et al.
patent: 4904542 (1990-02-01), Mroczkowski
patent: 4916022 (1990-04-01), Solfest et al.

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