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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.

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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