Method for production of high-pressure phase sintered article of boron nitride for use in cutting tool and sintered article produced by the method
US5200372A · kind A · utility
37Cited by
3References
5Claims
0Family size
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Key dates
| Filing date | Dec 31, 1990 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Dec 31, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C2026/006
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sintered article is produced by mixing an intermetallic compound (binding phase) composed of at least one member selected from among carbides, nitrides, and borides of the elements of Groups 4a, 5a, and 6a in the Periodic Table of Elements and at least one element selected from among Al, Ni, Si, Co, Zr, and W with wBN, then mixing the resultant mixture with cBN and firing the produced mixture under a pressure exceeding 20 Kb at a temperature exceeding 1,000.degree. C. As a material for cutting tools, the sintered article is superior in quality to the conventional sintered article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.