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Proceedings Paper

Laser buffing of nickel-phosphorous surface after mechanical texturing
Author(s): Daming Liu; Yongfeng Lu; Y. Y. Neo; Weijie Wang; Tohsiew Low
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Paper Abstract

Laser buffing of nickel-phosphorous (NiP) surface after mechanic texturing has been investigated. A KrF excimer laser ((lambda) equals 248 nm, (tau) equals 23 ns) was employed in the experiment as an irradiation source. The sample is a mechanic- textured hard disk. Atomic force microscope (AFM) was used to analyze the surface morphologies before and after laser irradiation. The results show that the surface was buffed in micro-scale after laser irradiation. The surface root mean square roughness and average roughness decreased. One- dimensional thermal conduction model was used to simulate the temperature distribution in the irradiated region. The mechanisms of laser buffing are proposed based on the investigation. It is more likely due to selectively localized melting during laser irradiation.

Paper Details

Date Published: 15 August 1998
PDF: 8 pages
Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); doi: 10.1117/12.317947
Show Author Affiliations
Daming Liu, National Univ. of Singapore (United States)
Yongfeng Lu, National Univ. of Singapore (United States)
Y. Y. Neo, National Univ. of Singapore (Singapore)
Weijie Wang, National Univ. of Singapore (Singapore)
Tohsiew Low, National Univ. of Singapore (Singapore)


Published in SPIE Proceedings Vol. 3550:
Laser Processing of Materials and Industrial Applications II
ShuShen Deng; S. C. Wang, Editor(s)

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