Protective coatings for metal-based substrates and related proce

Stock material or miscellaneous articles – All metal or with adjacent metals – Having composition – density – or hardness gradient

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Details

428610, 428613, 428633, 428668, 428678, 428937, 416241R, 416241B, B32B 1500, B32B 518

Patent

active

061656283

ABSTRACT:
An article is described, which includes a metal-based substrate, such as a superalloy; a dense, primary bond layer; and a spongy secondary bond layer. A thermal barrier coating is applied over the secondary bond layer. The spongy layer has a microstructure which includes an open network of interconnected pores. A process is also described. It includes the step of applying a spongy, metallic bond layer over the substrate, followed by the application of a thermal barrier coating. A dense, primary bond layer may optionally be applied before the application of the spongy layer.

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