Cementitious ceramic surface having controllable reflectance and texture
US6632540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2002 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Sep 7, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C24/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.