Improvement of Corrosion Resistance and Mechanical Properties of the Biomaterial Ti-6AL-4V Alloy by ELID Grinding

M. Mizutani, J. Komotori, K. Katahira, Y. Watanabe, H. Ohmori

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

To clarify the effects of the ELID (Electrolytic In-process Dressing) grinding on surface characteristics of the biomaterial Ti-6Al-4V alloy, electrochemical corrosion tests were carried out using a three-electrode electrochemical cell connected to a computer driven potentiostat. The processed surfaces were analyzed by the X-ray Photoelectron Spectroscopy (XPS). The surface hardness of the samples was measured by a Nano Hardness Tester (NHT). The surface finished by the ELID grinding method showed higher corrosion resistance, compared to the surface finished by polishing. This is due to the influence of the oxidized layer on the surface and also due to the diffusion of oxygen. The diffused oxygen accelerates the regeneration of the oxide layer broken by the raised potential and prevents the dissolution of metal ions. Surface hardness was increased by the ELID grinding. This is because of the existence of the carbon diffused layer beneath the surface.

Original languageEnglish
Pages (from-to)473-476
Number of pages4
JournalKey Engineering Materials
Volume257-258
Publication statusPublished - 2004 Jan 1

Keywords

  • Biomaterial
  • Corrosion Response
  • ELID Grinding
  • Surface Hardness
  • Surface Modification
  • Ti-6Al-4V Alloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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