C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 30/00 (2006.01) B32B 15/06 (2006.01) B32B 18/00 (2006.01) F01D 5/28 (2006.01)
Patent
CA 2044775
- 36 - DUPLEX COATINGS FOR VARIOUS SUBSTRATES Abstract of the Disclosure A duplex coating for substrates that comprises an undercoat of tungsten carbide-cobalt having a strain-to-fracture of greater than 4.3x10-3 inch per inch and a top coat of a ceramic material such as alumina in which the ratio of the thickness of the top coat to the undercoat is from 6:1 to 1:3. D-16010
Praxair S.t. Technology Inc.
Sim & Mcburney
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