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LASER ASSISTED SURFACE MODIFICATION OFTi–6Al–4VFOR BIOIMPLANT APPLICATION

Author

Listed:
  • A. BISWAS

    (Department of Met. & Mat. Engg., I. I. T., Kharagpur, W. B. 721302, India)

  • U. K. CHATTERJEE

    (Department of Met. & Mat. Engg., I. I. T., Kharagpur, W. B. 721302, India)

  • LIN LI

    (School of Mech. Aero. & Civil Engg., Univ. Manchester, UK)

  • I. MANNA

    (Department of Met. & Mat. Engg., I. I. T., Kharagpur, W. B. 721302, India)

  • J. DUTTA MAJUMDAR

    (Department of Met. & Mat. Engg., I. I. T., Kharagpur, W. B. 721302, India)

Abstract

The present study aims at enhancing the wear resistance ofTi–6Al–4Vby laser surface nitriding. Laser surface treatment has been carried out by melting of the sand blastedTi–6Al–4Vsubstrate using a high power continuous wave Diode laser with nitrogen as shrouding environment (at a gas flow rate of 51/min). Laser surface nitriding led to formation of dendrites of titanium nitrides. The microhardness is improved to a maximum of 900–950 VHN (Vickers hardness number) in laser surface nitriding as compared to 260 VHN of the as-received substrate. Surface nitriding increased primary potential for pit formation (Epp1) as compared toTi–6Al–4V. Biocompatibility behavior showed a better cell viability due to surface nitriding as compared to the as-receivedTi–6Al–4V.

Suggested Citation

  • A. Biswas & U. K. Chatterjee & Lin Li & I. Manna & J. Dutta Majumdar, 2007. "LASER ASSISTED SURFACE MODIFICATION OFTi–6Al–4VFOR BIOIMPLANT APPLICATION," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 14(04), pages 531-534.
    • Handle: RePEc:wsi:srlxxx:v:14:y:2007:i:04:n:s0218625x07009700
    DOI: 10.1142/S0218625X07009700
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