Mechanical characterization of a novel nanocrystalline coating: first-principles calculations and nanoindentation

Date

2012

Authors

Lai, D.
Xu, J.
Xie, Z.
Habibi, D.
Munroe, P.

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Journal article

Citation

Materials Characterization, 2012; 68:1-6

Statement of Responsibility

Daohui Lai, Jiang Xu, Zong-Han Xie, Daryoush Habibi, Paul Munroe

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DOI

10.1016/j.matchar.2012.03.003

Abstract

A nanostructured MoSi <inf>2</inf> coating with the average grain size of 5 nm and a strong (111) preferred orientation, was synthesized potentially for jet engine hot-zone components against volcanic ash damage. The high hardness of the resulting coating was predicted using first-principles calculations and found to agree well with the experimental data determined by nanoindentation. We also found that the softening and subsequent breaking of the Mo - Si bonds were responsible for the failure of this nanostructured coating under tensile loading. © 2012 Elsevier Inc. All rights reserved.

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© 2012 Published by Elsevier Inc.

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Published Version

https://doi.org/10.1016/j.matchar.2012.03.003

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Persistent link to this record

http://hdl.handle.net/2440/75975