Development of A New Integrated Machining System ~ Improvement of Surface Characteristics on Metallic Biomaterials With a New Electrical Grinding System ~

• Autorzy: Mizutani M. , Katahira K. , Ohmori H. , Komotori J.
• Języki publikacji: EN

Abstrakty

EN

Bio-implants, such as artificial joints, require high efficiency and precision processing because they are intricate forms. Especially, in the case of the stem of artificial joints, it is necessary to produce in the form united with the patient. In addition, the downsizing of bio-implant materials has been progressing, thus requiring ultra-precision processing techniques. Biomaterials also require enhanced chemical stability and mechanical properties, which are dependent on the quality and thickness of the oxide layer on their surface. Therefore, if we can form a thick and stable oxide layer during machining process, it is very effective in improving the surface properties. This will also help us to skip other surface treatment and allow for significant saving in energy. In this study, to discuss the applicability of an ELID (Electrolytic In-process Dressing) grinding for finishing process of biomaterials, the ground surfaces were analyzed. Finished surfaces produced by a new electrical grinding system showed higher corrosion resistance and tribological properties as compared to those of the polished surfaces. It is believed that this new system improves corrosion resistance and tribological properties by creating a thick oxide layer with a diffused oxygen and carbon element.

Słowa kluczowe

EN

surface modification; biomaterials; high quality surface; ELID grinding

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2007
• Tom: Vol. 7, No. 1
• Strony: 15--23
• Opis fizyczny: Bibliogr. 8 poz., rys., tab.

Twórcy

autor

Mizutani M.

• RIKEN, The Institute of Physical and Chemical Research

autor

Katahira K.

• RIKEN, The Institute of Physical and Chemical Research

autor

Ohmori H.

• RIKEN, The Institute of Physical and Chemical Research

autor

Komotori J.

• Department of Mechanical Engineering, KEIO University

Bibliografia

• [1] WISBEY A., GREGSON P.I., and PETER,L.M., Effect of Surface Treatment on the Dissolution of Titanium-based Implant Materials, Biomaterials, 1991, Vol. 12, pp. 470-473.
• [2] OHMORI H., KATAHIRA K., NAGATA J., MIZUTANI M.. and KOMOTORI .1., Improvement of Corrosion Resistance in Metallic Bioinaterials by a New Electrical Grinding Technique, Annals of the CIRP, 2002, Vol. 51 No. l,pp. 491-494.
• [3] BR1NKSMEIER E., and WALTER A., Generation of Reactionlayers on Machined Surface, Annals of the CIRP, 2000, Vol. 49, No. 1, pp. 435-438.
• [4] MINAMI H., MASUI K., TSUKAHARA H., and HAGINO H., Coloring Method for Titanium Alloy Using EDM Process, Ann. ISEM 12, Aachen, 1998, pp. 503-507.
• [5] OHMORI H. and NAKAGAWA T, Mirror Surface Grinding of Silicon Wafers with Electrolytic In-Process Dressing, Annals of the CIRP, 1990, Vol. 39, No. 1, pp. 320-325.
• [6] OHMORI H„ Electrolytic In-Process Dressing (ELID) Grinding Technique for Ultra-Precision Mirror Surface Machining, hit. Journal of JSPE, 1992, Vol 26, No. 4, pp. 273-279.
• [7] MIZUTANI M., KATAHIRA K., KOMOTORI J., NAGATA J., and OHMORI H., Surface finishing for biomaterials -Application of the ELID grinding method-, International Journal of Modern Physics B, 2003, Vol. 17, No.l&2, pp.259-264.
• [8] OHMORI H., KATAHIRA K., NAGATA J., MIZUTANI M., and KOMOTORI J., Improvement of Corrosion Resistance in Metallic Biomaterials by a New Electrical Grinding Technique, Annals of the CIRP, 2002, Vol.51 No. 1, pp.491-494.