Surface modification for orthopaedic titanium alloy by wide-area electron beam

Akira Okada, Y. Uno, K. Uemura, P. Raharjo, J. A. McGeough

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Wide-area electron beam (WAEB) irradiation was proposed as a new surface-finishing process for orthopaedic titanium alloy products. The surface roughness could be reduced from Rz = 10 μm to Rz = 0.7 μm all over the wide circular surface within a diameter of 60 mm in just a few minutes under optimum electron beam conditions. In this paper, the surface structure and the surface characteristics of WAEB-irradiated surface are discussed. The crystal grain size becomes small and the microstructure in the surface vicinity changes under WAEB irradiation. The corrosion resistance and the repellency can be improved simultaneously with the surface smoothing. Therefore, the WAEB irradiation method enables highly efficient surface smoothing and surface modification of orthopaedic titanium alloy.

Original languageEnglish
Pages (from-to)173-178
Number of pages6
JournalProceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
Volume221
Issue number2
DOIs
Publication statusPublished - 2007

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Keywords

  • Electron beam
  • Resistance to corrosion
  • Surface finishing
  • Surface modification
  • Titanium alloy

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering

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