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Tribology and mechanical properties of excimer laser-processed Ti–Si3N4 surfaces

Published online by Cambridge University Press:  03 March 2011

T.R. Jervis ,
J-P. Hirvonen ,
M. Nastasi  and
H. Kung
T.R. Jervis
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
J-P. Hirvonen
Affiliation:
VTT Manufacturing Technology, FIN-02044 VTT, Finland
M. Nastasi
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
H. Kung
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
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Abstract

Titanium films were mixed, using excimer laser radiation, into the surface of bulk Si3N4 materials. The tribological and mechanical properties of these surfaces were then evaluated using pin-on-disk and nanoindenter techniques, respectively. Reduced friction and a change in the wear mechanism that resulted in a more benign failure mode were observed. These results are interpreted as resulting from the establishment of a transfer film, changes in the compliance of the surface which reduces instantaneous stresses in the surface, and toughening of the surface, all results of the laser process.

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Type
Rapid Communication
Information
Journal of Materials Research , Volume 10 , Issue 8 , August 1995 , pp. 1857 - 1860
Copyright
Copyright © Materials Research Society 1995

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References

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