Thermal barrier coating process

Details Thermal barrier coating process Thermal barrier coating process

C - Chemistry, Metallurgy

23

C

C23C 4/10 (2006.01) C23C 4/02 (2006.01) C23C 28/00 (2006.01)

Patent

CA 2110007

THERMAL BARRIER COATING PROCESS ABSTRACT A process of providing a thermal barrier coating on a metal substrate comprises the steps of: a) applying a metallurgical bondcoat to the substrate; b) depositing a first zirconia layer on the bondcoat; c) depositing a second zirconia layer on the first zirconia layer; and d) controlling substrate temperature during steps b) and c) to provide the first zirconia layer with substantially zero porosity and to provide the second zirconia layer with between about 10% and 20% porosity. A product produced by the process is also disclosed.

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