Cubic boron nitride compact
US8679208B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jun 8, 2009 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Jan 1, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C26/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to PCBN compacts, more specifically, to a PCBN compact comprising cBN; a secondary hard phase selected from the transition metal carbides, nitrides, carbonitrides and mixtures thereof; a superalloy bonding phase; optionally an added transition metal aluminide; and optionally a small amount of a suitable oxide, preferably, aluminum oxide or yt-trium oxide. More particularly, the cBN compact comprises 30 to 70 volume % of a polycrystalline mass of cubic boron nitride particles; 70 to 30 volume % of a matrix phase, and a superalloy. The matrix phase comprises a secondary hard phase selected from a transition metal carbide, nitride, carbonitride and a mixture thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.