Method for forming a non-degrading refective coating system for

Details Method for forming a non-degrading refective coating system for Method for forming a non-degrading refective coating system for

1995-06-23

1996-08-13

Lusignan, Michael

Coating processes

Applying superposed diverse coating or coating a coated base

Metal coating

4274192, 4274197, B05D 136, B05D 700

Patent

active

055454372

ABSTRACT:
A heat shield which is adapted to be formed on an article which must operate in an environment in which the article is subject to thermal radiation while at an elevated service temperature. The heat shield is composed of a barrier layer formed or deposited on the surface of the article, and a reflective layer on the barrier layer. The reflective layer serves to reflect a majority of the thermal radiation which is incident on the article. The barrier layer serves to substantially prevent degradation of the reflective layer at the elevated service temperature, so as to prevent the reflectivity of the reflective layer from being degraded while the article is in service. The reflective layer is preferably a noble metal, a noble metal alloy or aluminum, while the barrier layer is preferably a nitride, aluminum oxide, yttria-stabilized zirconia, or an oxide which can be grown by oxidation of the article's surface.

REFERENCES:
patent: 3736109 (1973-05-01), Darling et al.
patent: 3890456 (1975-06-01), Dils
patent: 4123595 (1978-10-01), Chang
patent: 4163736 (1979-08-01), Acres et al.
patent: 4399199 (1983-08-01), McGill et al.

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