Hydrothermal process for making barium titanate powders
US6129903A · kind A · utility
11Cited by
5References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1999 |
| Grant date | Oct 10, 2000 |
| Priority date | — |
| Expiry date | Jun 30, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A hydrothermal process for making barium titanate powders. The process utilizes a thawed hydrated titanium oxide gel as a titanium source for the hydrothermal reaction. The process includes mixing the thawed hydrated titanium oxide gel and a barium source in a reaction chamber to form a hydrothermal reaction mixture. The temperature of the hydrothermal reaction mixture in the reaction chamber is increased to a reaction temperature to form a barium titanate particle suspension. The particle suspension is then cooled to room temperature. The resulting barium titanate particles, preferably, have a submicron particle size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.