Adherent ceramic coatings

Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board

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Details

4272481, 4272553, 427257, 427258, B05D 306, C23C 1100

Patent

active

046769943

ABSTRACT:
A method for depositing a coating of a dense ceramic material is disclosed. The coating may be an oxide or other refractory ceramic material. A ceramic starting material is melted and refined by heating with an electron beam in vacuum. The refined material is evaporated and deposited on a heated substrate to form a dense ceramic coating. In particular, a durable ceramic thermal barrier coating on a superalloy turbine part may be formed by coating the part with a metal layer which is oxidized to form alumina and depositing a dense ceramic layer followed by an overcoating of a columnar ceramic material.

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patent: 4321311 (1982-03-01), Strangman
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patent: 4414249 (1983-11-01), Ulion et al.
R. F. Bunshah, "Structure/Property Relationships in Evaporated Thick Films and Bulk Coatings", J. Vac. Sci. Technol., vol. 11, No. 4, Jul./Aug. 1974.

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