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Formation of tribological structures by laser ablation

 
: Schilling, N.; Paschke, M.; Klotzbach, U.; Hendow, S.T.

:

Hennig, G. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Laser applications in microelectronic and optoelectronic manufacturing, LAMOM XVII : 23 - 26 January 2012, San Francisco, California, United States; Part of SPIE Photonics West
Bellingham, WA: SPIE, 2012 (Proceedings of SPIE 8243)
ISBN: 978-0-8194-8886-2
Paper 82430X
Conference "Laser Applications in Microelectronic and Optoelectronic Manufacturing" (LAMOM) <17, 2012, San Francisco/Calif.>
Photonics West Conference <2012, San Francisco/Calif.>
English
Conference Paper
Fraunhofer IWS ()
burst mode; crater formation; laser ablation; material ablation; tribological structure

Abstract
Many technical applications can benefit from the use of tribological structures in minimizing abrasive material wear and energy consumption without the integration of additional materials in a working assembly. Especially in lubricated friction systems, the tribological character can be significantly improved through the addition of oriented and repetitive microstructure. In this study, experimental tests are discussed for a small range of structure dimensions to verify the effect of optimizing the tribological contact performance. A nanosecond pulsed fiber laser is used to create various test structures with different sizes and form. The quality of the fabricated surface pattern, particularly form correctness, feathering and material modification effects of the ablated area is characteriz ed and optimized. The influence of pulse duration, pulse energy and pulse delay using normal pulsing is presented and compared to various burst modes.

: http://publica.fraunhofer.de/documents/N-203637.html