Selectively leached thermally stable cutting element in earth-boring tools, earth-boring tools having selectively leached cutting elements, and related methods
US11992881B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2021 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | Feb 22, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cutting element comprises a supporting substrate, and a cutting table attached to an end of the supporting substrate. The cutting table comprises a first region and a second region. The first region comprising inter-bonded diamond particles and is substantially free of at least highly catalytic metallic compounds, one or more non-catalytic compounds within interstitial spaces between the inter-bonded diamond particles, and voids within interstitial spaces between the inter-bonded diamond particles. The second region comprising inter-bonded diamond particles, one or more non-catalytic compounds within interstitial spaces between the inter-bonded diamond particles, and one or more metallic phases within interstitial spaces between the inter-bonded diamond particles. The first region of the cutting table has a content of elemental metal of at least about 2.6 wt %. A method of forming a cutting element, and an earth-boring tool are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.