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Proceedings Paper

Processing HIP-zirconia with ultra-short laser pulses
Author(s): Kristian Werelius; Paul Weigl; Holger Lubatschowski
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Paper Abstract

Creating individual complex three dimensional structures in HIP-zirconia by conventional mechanical machining, e.g. milling, is time consuming and subject to significant loss in bending strength due to microcracking during the milling process. Utilizing ultra-short laser pulses, individual complex three dimensional microstructures can be created very precisely without significant damage to the structure. This advantage is used to process HIP-zirconia in order to create dental restorations. To evaluate efficiency and quality, different laser parameters such as pulse duration, pulse energy and ablation strategies were studied. The maximum ablation rate was found at 400 fs.

Paper Details

Date Published: 18 November 2003
PDF: 4 pages
Proc. SPIE 5063, Fourth International Symposium on Laser Precision Microfabrication, (18 November 2003); doi: 10.1117/12.540505
Show Author Affiliations
Kristian Werelius, Johann Wolfgang Goethe-Univ. Frankfurt am Main (Germany)
Paul Weigl, Johann Wolfgang Goethe-Univ. Frankfurt am Main (Germany)
Holger Lubatschowski, Laser Zentrum Hannover e.V. (Germany)

Published in SPIE Proceedings Vol. 5063:
Fourth International Symposium on Laser Precision Microfabrication
Isamu Miyamoto; Andreas Ostendorf; Koji Sugioka; Henry Helvajian, Editor(s)

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