Fixed abrasive three-dimensional lapping and polishing plate and methods of making and using the same
US11565374B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2019 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Sep 4, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A fixed abrasive three-dimensional plate includes micron size diamond beads or a mixture of abrasive particles and metal oxide beads, ranging in size from a few microns to a few tens of microns, incorporated into a matrix of one or more inorganic binders and fillers. The composition is formed into a rigid plate blank, and the abrasive plate is mounted on a substrate forming a lapping/polishing plate. The abrasive plate is capable of delivering high material removal rates coupled with reduced surface roughness when lapping/polishing advanced materials, including sapphire, titanium carbide reinforced alumina, silicon carbide, gallium nitride, aluminum nitride, zinc selenide, and other compound semiconductor materials, as well as, glass, ceramic, metallic, and composite workpieces. The diamond beads incorporated in the fixed abrasive three-dimensional plate include diamond particles ranging in size from a few nanometers to a few tens of microns, bonded with one or more inorganic binders and additives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.