Surface finishing for biomaterials: Application of the ELID grinding method

Masayoshi Mizutani, Jun Komotori, Jin Nagata, Kazutoshi Katahira, Hitoshi Ohmori

研究成果: Article査読

7 被引用数 (Scopus)


Conventional biomaterials, such as titanium alloys, require enhanced chemical stability and wear resistance, which are dependent on the quality of the surficial oxide layer. However, it is very difficult to produce a sufficiently homogenous oxide layer by polishing using isolation abrasive alone. In our previous study, we proposed a new electrical grinding method (ELID grinding). The process improves oxide formation on the finished surface, resulting in finished surfaces with very thick and potentially stable oxide layers. In this study, to ensure the fabrication of surface with desirable characteristics for biomaterials, three types of specimens, which were processed with different surface finishing methods were prepared. Processed surfaces were analyzed by using an Energy Dispersive X-ray analyzer (EDX). To measure the thickness of surface oxide layers, detailed observation were performed by using a Transmission Electron Microscope (TEM). Although the ELID ground surface shows a higher value of surface roughness, excellent corrosion resistance was observed as compared with the samples finished by polishing. This is because of the formation of a thick oxide layer on the finished surface by ELID grinding. Consequently, ELID grinding appears to offer significant future promise for use in biomaterials and other engineering components subjected to the corrosion process.

ジャーナルInternational Journal of Modern Physics B
8-9 I
出版ステータスPublished - 2003 4月 10

ASJC Scopus subject areas

  • 統計物理学および非線形物理学
  • 凝縮系物理学


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