Laser buffing of nickel-phosphorous surface after mechanic texturing

D. M. Liu, Y. F. Lu, Y. Y. Neo, W. J. Wang, T. S. Low

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

Laser buffmg of nickel-phosphorous (NiP) surface after mechanic texturing has been investigated. A KrF excimer laser (λ-248 11111, π = 23 ns) was employed in the experiment as an irradiation source. The sample is a mechanictextured hard disk. Atomic force microscope (AFM) was used to analyze the surface moiphologies before and after laser irradiation. The results show that the surface was buffed in micm-scale after laser irradiation. The surface root mean square roughness and avemge roughness decreased. One-dimensional thennal 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.

Original languageEnglish (US)
Pages (from-to)237-244
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3550
DOIs
StatePublished - Aug 15 1998
Externally publishedYes
EventLaser Processing of Materials and Industrial Applications II 1998 - Beijing, China
Duration: Sep 16 1998Sep 19 1998

Keywords

  • Laser buffing
  • Localized melting
  • Mechanic texturing
  • Nip surface
  • Surface morphology

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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