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Enhancement in the Growth of Textured HFCVD Diamond Coatings on Ti-6Al-4V Substrates by Excimer Laser Processing

Published online by Cambridge University Press:  10 February 2011

Mikhail T. Galeev ,
M. Vedawyas ,
G. Sivanathan  and
Ashok Kumar
Mikhail T. Galeev
Affiliation:
Department of Electrical and Computer Engineering, University of South Alabama, Mobile, AL-36688, USA, akumar@usamail.usouthal.edu
M. Vedawyas
Affiliation:
Department of Electrical and Computer Engineering, University of South Alabama, Mobile, AL-36688, USA, akumar@usamail.usouthal.edu
G. Sivanathan
Affiliation:
Department of Electrical and Computer Engineering, University of South Alabama, Mobile, AL-36688, USA, akumar@usamail.usouthal.edu
Ashok Kumar
Affiliation:
Department of Electrical and Computer Engineering, University of South Alabama, Mobile, AL-36688, USA, akumar@usamail.usouthal.edu
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Abstract

In this work we address the studies of enhancement in diamond growth on Ti-6AI-4V metal alloy by modifying the surface using the excimer laser ablation technique, prior to deposition of diamond. Ti-6Al-4V is chosen for its technological importance in aerospace industry, dental and bio-implant applications. Analysis of the structures of the film is done using X-ray diffraction, scanning electron microscopy and Raman spectroscopy. Ablation of the alloy by excimer laser pulses produces periodically hill/valley structures on the surface, thus increasing the density of diamond nucleation and film adhesion. The roughness of the alloy surface was measured to be in the 0.5μm – 1μm range with an average distance between peaks of the hill/valley structure measuring 1.5μm.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 585: Symposium L – Fundamental Mechanisms of Low-Energy-Beam Modified Surface , 1999 , 159
Copyright
Copyright © Materials Research Society 2000

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