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Proceedings Paper

Surface Treatments Of Metals With Excimer Lasers
Author(s): B. Juckenath; H. Durchholz; H. W. Bergmann; J. Dembowski
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Paper Abstract

The paper summarizes preliminary results obtained by surface modifications of various metal substrates with high power Excimer lasers. It was found that metals with different crystal structures exhibit different behavior, if small surface layers were melted. For fcc. metals deformation twins were found after exposure, while in bcc. metals twinning could not be observed. In hcp. metals twinning or cracking occurs depending on crystal orientation. Resolidification starts epitactically on crystalline substrates resulting either in a grain size comparable to the substrate, or in the formation of an amorphous layer, if a glass forming composition is present. Treatments of vitrified materials did always lead to amorphous resolidification. Surface roughness increased with increasing power flux density, roughness of the starting material and with the number of exposures. For some Ag-based alloys the laser treatment improved the properties of contact materials.

Paper Details

Date Published: 26 April 1989
PDF: 6 pages
Proc. SPIE 1023, Excimer Lasers and Applications, (26 April 1989); doi: 10.1117/12.950155
Show Author Affiliations
B. Juckenath, Forschungsverbund Lasertechnologie Erlangen (Germany)
H. Durchholz, Siemens AG (Germany)
H. W. Bergmann, Forschungsverbund Lasertechnologie Erlangen (Germany)
J. Dembowski, W.C. Heraeus (Germany)

Published in SPIE Proceedings Vol. 1023:
Excimer Lasers and Applications
Dirk Basting, Editor(s)

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