Shaping of brittle materials with controlled surface and bulk properties
US9919380B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2014 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Nov 18, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B33/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods of and devices for forming edge chamfers and through holes and slots on a material that is machined using a laser, such as an ultrafast laser. The shaped material has predetermined and highly controllable geometric shape and/or surface morphology. Further, a method of and a device for preventing re-deposition of the particles on a material that is machined using a laser, such as an ultrafast laser. A fluid is used to wash off the particles generated during the laser machining process. The fluid can be in a non-neutral condition, with one or more chemical salts added, or a condition allowing the coagulation of the particles in the fluid, such that the particles can be precipitated to avoid the reattachment to the machined substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.