Superabrasive articles and methods for removing interstitial materials from superabrasive materials
US7972395B1 · kind B1 · utility
19Cited by
4References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 6, 2009 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Jul 17, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C2204/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of processing a polycrystalline diamond material is disclosed. According to the method, a metal-solvent catalyst is leached from a polycrystalline diamond material by exposing at least a portion of the polycrystalline diamond material to a leaching solution. The leaching solution includes water, a complexing agent, and a mineral acid. The complexing agent is configured to inhibit tungsten in the polycrystalline diamond material from oxidizing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.