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Nanosecond laser texturing of aluminium for control of wettability

Sharp, MC and Rosowski, A and French, PW (2015) Nanosecond laser texturing of aluminium for control of wettability. In: Proceedings of the SPIE, Industrial Laser Applications Symposium (ILAS 2015) , 9657. (4th Industrial Laser Applications Symposium (ILAS), 17 March 2015 - 18 March 2015, Kenilworth, ENGLAND).

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Abstract

There is increasing interest in the use of lasers to modify the wettability of surfaces. Here we report on the use of a 20W nS pulsed IR fibre laser to create strong ydrophobicity on the surface of aluminium sheets. This is unexpected, hydrophobicity is usually associated solely with femto- or pico- second laser processing. At a 20W average power level the area coverage rate is too small for many industrial applications. Further trials using a 800W DPSS laser are described and the ability of this system to change surface wettability at a much higher production rate are indicated. There is little reported literature on surface texturing at higher average power levels. Indications of the productivity, or surface coverage rate, are given.

Keywords: Fibre lasers, DPSS lasers, Surface Engineering, texturing, wettability, aluminium

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Science & Technology; Technology; Physical Sciences; Engineering, Electrical & Electronic; Optics; Physics, Applied; Engineering; Physics; Fibre lasers; DPSS lasers; Surface Engineering; texturing; wettability; aluminium; FEMTOSECOND LASER; SURFACES
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics. Nuclear engineering
Divisions: General Engineering Research Institute
Publisher: Society of Photo-Optical Instrumentation Engineers
Related URLs:
Date Deposited: 11 Aug 2015 09:56
Last Modified: 11 Aug 2015 09:57
DOI or Identification number: 10.1117/12.2179929
Editors: Green, M
URI: http://researchonline.ljmu.ac.uk/id/eprint/1819

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