Process for producing sialon
US4731236A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Apr 15, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing a sialon powder, which process comprises the steps of: PA0 introducing a decomposable silicon compound, decomposable aluminum compound and a decomposable carbon compound into a steam-containing hot gas to decompose said decomposable silicon compound, aluminum compound and carbon compound in said hot gas into silicon oxide, aluminum oxide and elemental carbon, respectively, thereby producing a fine solid particle mixture consisting essentially of said silicon oxide, aluminum oxide and elemental carbon to be dispersed in said gas; PA0 collecting said fine solid particle mixture dispersed in the gas from the gas phase by a solid-gas separating technique; and PA0 calcining the thus-obtained carbon-containing composition consisting essentially of said silicon oxide, aluminum oxide and elemental carbon, in a nitrogen containing gas atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.