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Tribological and Mechanical Properties of Fe/Ti Multilayered films

Published online by Cambridge University Press:  16 February 2011

M. Nastasi ,
J-P. Hirvonen ,
T. R. Jervis  and
S. N. Basu
M. Nastasi
Affiliation:
Los Alamos National Laboratory, Los Alamos, NM 87545
J-P. Hirvonen
Affiliation:
Los Alamos National Laboratory, Los Alamos, NM 87545
T. R. Jervis
Affiliation:
Los Alamos National Laboratory, Los Alamos, NM 87545
S. N. Basu
Affiliation:
Los Alamos National Laboratory, Los Alamos, NM 87545
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Abstract

A 900 Å as-deposited multilayered structure of alternating Fe and Ti on hardened tool steel has been examined for tribological and mechanical properties. The multilayer in contact with a 52100 steel ball counter surface possessed a 0.16 friction coefficient and showed good wear character after 1000 cycles in pin-on-disk experiments. Nanoindentation experiments show a 20 % increase in hardness for material in the wear track. Electron microscopy data suggests that the as-deposited bcc-Fe plus hcp-Ti multilayer composite transforms to a nanocrystalline alloy plus bcc-Fe by solid state reaction during pin-on-disk friction and wear test. The low friction observed in these surface films is attributed to the formation of a hard nanocrystalline alloy and improved interlayer and film/substrate adhesion which result during solid state reaction.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 188: Symposium K – Thin Films: Stresses and Mechanical Properties II , 1990 , 301
Copyright
Copyright © Materials Research Society 1990

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References

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