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The Mechanical Properties of Cu/TiB2 Multilayer Structures

Published online by Cambridge University Press:  16 February 2011

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

We have investigated the hardness and tribological properties of Cu/TiB2 multilayer structures deposited on substrates of tempered martensitic steel. Films of Cu and TiB2 were also deposited as hardness standards. The wear properties of the films were found to be poor, because of lack of adhesion. However, the films do appear to have good fracture toughness. The hardness of the multilayer was 18% greater than that predicted by the law of mixtures applied to the reference standards and, when corrected for variations in substrate hardness, very nearly equal to that of the TiB2 film. Irradiation by 400 keY Ne-ions to doses of 1.0, 6.0, and 12×1015 ion/cm2 results in a slight hardening of the multilayer. The structure was found to have excellent stability against radiation damage.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 188: Symposium K – Thin Films: Stresses and Mechanical Properties II , 1990 , 307
Copyright
Copyright © Materials Research Society 1990

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References

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