Polycrystalline compacts including metallic alloy compositions in interstitial spaces between grains of hard material, cutting elements and earth-boring tools including such polycrystalline compacts, and related methods
US8651203B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2011 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Nov 20, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C26/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Polycrystalline compacts include a polycrystalline material comprising a plurality of inter-bonded grains of hard material, and a metallic material disposed in interstitial spaces between the inter-bonded grains of hard material. At least a portion of the metallic material comprises a metal alloy that includes two or more elements. A first element of the two or more elements comprises at least one of cobalt, iron, and nickel. A second element of the two or more elements comprises at least one of dysprosium, yttrium, terbium, gadolinium, germanium, samarium, neodymium, and praseodymium. The metal alloys may comprise eutectic or near-eutectic compositions, and may have relatively low melting points. Cutting elements and earth-boring tools include such polycrystalline compacts. Methods include the formation of such polycrystalline compacts, cutting elements, and earth-boring tools.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.