Process for producing sintered body of boron nitride
US4469802A · kind A · utility
15Cited by
2References
4Claims
0Family size
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Key dates
| Filing date | Dec 17, 1982 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | Dec 17, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/5831
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing a sintered body of cubic system boron nitride comprises steps of: PA1 (a) mixing raw material boron nitride selected from the group consisting of hexagonal system boron nitride, cubic system boron nitride, and a mixture thereof with Me.sub.3 B.sub.2 N.sub.4 (where: Me represents an alkaline earth metal) in an amount of from 0.15 to 3.0 mol %; and PA1 (b) treating said mixed material at a temperature of 1350.degree. C. and above under a thermodynamically stabilized pressure condition of the cubic system boron nitride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.