Laser peening process and apparatus using a liquid erosion-resistant opaque overlay coating
US7268317B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2003 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Sep 2, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D10/005
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method and apparatus for improving properties of a solid material by providing shockwaves there through. Laser shock processing is used to provide the shockwaves. The method includes applying a liquid energy-absorbing overlay, which is resistant to erosion and dissolution by the transparent water overlay and which is resistant to drying to a portion of the surface of the solid material and then applying a transparent overlay to the coated portion of the solid material. A pulse of coherent laser energy is directed to the coated portion of the solid material to create a shockwave. Advantageously, at least a portion of the unspent energy-absorbing overlay can be reused in situ at a further laser treatment location and/or recovered for later use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.