| Full text | |
| Author(s): |
Total Authors: 4
|
| Affiliation: | [1] Swiss Federal Institute of Technology Lausanne. Center for Laser Treatment of Materials - Suíça
[2] Swiss Federal Institute of Technology Lausanne. Center for Laser Treatment of Materials - Suíça
[3] LaserTools Technology Ltd. - Brasil
[4] Center for Lasers and Applications - Brasil
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 5, n. 2, p. 205-208, 2002-06-00. |
| Abstract | |
This work presents a new technique to remove the surface impurities from the aluminum cold-worked sheets. The method consists to concentrate a short-time high-power pulsed laser on the materials surface and scan it in order to cover a desired area. Incrustations ablation is obtained as long as the fluency and the peak power are high enough to produce vaporization of the contaminated layer without affecting the material surface properties. The present problem consists in eliminating a desiccated soap of about 1 g/m² from the surface of a 6016-class aluminum alloy sheet. The soap is originated from the rolling process. The present laser method is intended to replace water washing when the piece cannot be soaked, when drying is difficult due to the geometry, or when environmental restrictions apply. Best results were obtained when the pulse length was 100 ns and the average laser power was 95 W. In these conditions, the surface was completely cleaned and the aluminum alloy did not suffer any structural modification. (AU) | |
| FAPESP's process: | 98/07319-0 - Applications of lasers in materials processing |
| Grantee: | Spero Penha Morato |
| Support Opportunities: | Research Grants - Innovative Research in Small Business - PIPE |