Method of surface-treating ceramic workpieces using a laser
US4814575A · kind A · utility
78Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Oct 16, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/52
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A carbon dioxide laser (4) directs a beam (6) onto a ceramic workpiece to be treated (18), which workpiece moves along arrow (20). A carrier gas injector (14) injects a moderate throughput of spheroidized powder of a ceramic material into said beam. After melting and solidifying, the layer (24) after has microcracks which are smaller than they would have been if there had been no projected powder. The method is applicable to the construction of heat engines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.