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Laser - Assisted Synthesis of Unique Graded Surface Composites

Published online by Cambridge University Press:  15 February 2011

R.K. Singh  and
J. Fitz-Gerald
R.K. Singh
Affiliation:
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611
J. Fitz-Gerald
Affiliation:
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611
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Abstract

We have developed a novel laser assisted method to fabricate unique modified surface composites which have industrial applications ranging from improved adhesion of coatings to improved bio-compatibility. The surface consists of two materials with linear variation in composition, thus leading to linear variation in thermal expansion coefficients. The fabrication process is based on the use of a pulsed excimer laser with an energy fluence near the ablation threshold. Using this method we have been able to create adherent diamond coatings on cutting tool materials, high surface area bio-compatible hydroxyapatite ceramics and Mo/W surface composites. This process has also increased the adhesion of coatings in large thermal mismatched systems like diamond on steel substrates.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 397: Symposium B – Advanced laser Processing of Materials-Fundamentals and Applications , 1995 , 567
Copyright
Copyright © Materials Research Society 1996

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References

REFERENCES:

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