Consolidated hard materials, earth-boring rotary drill bits including such hard materials, and methods of forming such hard materials
US7691173B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2007 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | Jan 13, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention includes consolidated hard materials, methods for producing them, and industrial drilling and cutting applications for them. A consolidated hard material may be produced using hard particles such as B4C or carbides or borides of W, Ti, Mo, Nb, V, Hf, Ta, Zr, and Cr in combination with an iron-based, nickel-based, nickel and iron-based, iron and cobalt-based, aluminum-based, copper-based, magnesium-based, or titanium-based alloy for the binder material. Commercially pure elements such as aluminum, copper, magnesium, titanium, iron, or nickel may also be used for the binder material. The mixture of the hard particles and the binder material may be consolidated at a temperature below the liquidus temperature of the binder material using a technique such as rapid omnidirectional compaction (ROC), the CERACON® process, or hot isostatic pressing (HIP). After sintering, the consolidated hard material may be treated to alter its material properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.