Cementitious ceramic surface having controllable reflectance and texture
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United States of America Patent
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Oct 14, 2003
Issued Date -
N/A
app pub date -
Aug 20, 2002
filing date -
Apr 29, 1994
priority date (Note) -
Expired
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Abstract
An article is fabricated with a ceramic surface having a controllable surface finish. In one form, the ceramic is applied as a coating to a substrate article. Preferably, an aqueous coating mixture of phosphoric acid, alumina powder, and cordierite powder is prepared. The mixture is contacted to the surface of the article, and a mechanical overpressure is applied to the external surface of the mixture using a pressing tool. The surface character of the pressing tool, such as a smooth surface or an intentionally patterned surface, is reproduced on the surface of the final ceramic coating. The coating is heated to a moderate temperature to set the ceramic of the coating, and thereafter the coating is heated to a higher, but still intermediate temperature, to cure the coating.
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