Method of forming fine dimples in a hard-brittle material surface
US10987778B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2018 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Oct 31, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B41/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention is directed to provide a method of forming dimples comparatively simply on a surface of hard-brittle materials such as ceramics by post-processing. In the method, substantially spherical ejection particles having a median diameter d50 of from 1 μm to 20 μm are ejected together with a compressed gas at an ejection pressure of from 0.01 MPa to 0.7 MPa against a dimple formation region which is a region where dimples are to be formed on a surface of an article made from a hard-brittle material or a surface of an article having a surface coated with a coating layer of a hard-brittle material, or the like so as to form dimples on the surface of the hard-brittle material by plastic deformation without occurrences of breaks or cracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.