Vapor deposition of ceramic materials
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United States of America Patent
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May 23, 1995
Grant Date -
N/A
app pub date -
Sep 10, 1993
filing date -
Sep 10, 1993
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Abstract
Evaporated ceramic coatings are prepared by furnishing an ingot of a ceramic material, treating the ingot to reduce sources of gas within the ingot, and evaporating the ceramic material in the ingot by melting the surface of the ingot with an intense heat source. The evaporated ceramic is deposited upon a substrate as the ceramic coating. The reduced gas content of the ingot decreases the incidence of spitting and eruptions from the molten surface of the ingot, thereby improving the quality of the deposited coating, and facilitating increases in evaporation rates and coatings process production rates.
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