Process for making chemically bonded sol-gel ceramics
US6284682A · kind A · utility
38Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1999 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Aug 26, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C18/1295
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
This invention relates to a novel method of decreasing porosity of ceramics produced by sol-gel processing. The process of preparing chemically bonded sol-gel ceramics comprises phosphating a sol-gel derived oxide or hydrated oxide and polymerizing the phosphated product with heat treatment. Such combined sol-gel/chemical bonding process can be used to fabricate dense, thick ceramics or ceramic coatings for a variety of applications, including high temperature corrosion protection, wear resistance, dielectric properties, non-sticky surfaces, bio-active ceramics, thermal barrier ceramics, non-wetted surfaces, and others.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.