Laser buffing of nickel-phosphorous surface after mechanical texturing

Daming Liu; Yongfeng Lu; Y. Y. Neo; Weijie Wang; Tohsiew Low

doi:10.1117/12.317947

15 August 1998 Laser buffing of nickel-phosphorous surface after mechanical texturing

Daming Liu, Yongfeng Lu, Y. Y. Neo, Weijie Wang, Tohsiew Low

Proceedings Volume 3550, Laser Processing of Materials and Industrial Applications II; (1998) https://doi.org/10.1117/12.317947
Event: Photonics China '98, 1998, Beijing, China

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.

Citation Download Citation

Daming Liu, Yongfeng Lu, Y. Y. Neo, Weijie Wang, and Tohsiew Low "Laser buffing of nickel-phosphorous surface after mechanical texturing", Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); https://doi.org/10.1117/12.317947

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