Method of preparing a monocrystalline diamond abrasive grain
US9920452B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2014 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Feb 11, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B33/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to method of preparing a monocrystalline diamond abrasive grain comprising the steps of: sufficiently dispersing a micron-scale monocrystalline diamond and at least a micron-scale metal powder in a sol containing at least a nano-scale metal powder, and controlling the suitable ratio of the two kinds of metal powder with different order of magnitude of particle size, accordingly the micron-scale metal powder can be stuffed into voids among the monocrystalline diamond grains, and only a suitable amount of nano-scale metal powder is required to let the micron-scale metal powder and nano-scale metal powder coat together on the surface of the micron-scale diamond to form an integral and uniform coating layer including at least two kinds of metal grains, thus the resulting monocrystalline diamond abrasive grains have a unique rough-surface morphology, a plurality of contact points and contact surfaces resenting in the grinding process and good self-sharpening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.