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Computational Modeling and Design of Adaptive Thin-FilmComposite Coatings

Published online by Cambridge University Press:  26 February 2011

James Deon Pearson ,
Mohammed A. Zikry  and
Omid Rezvanian
James Deon Pearson
Affiliation:
jdpearso@ncsu.edu. North Carolina State University, Department of Mechanical and Aerospace Engineering, Raleigh, NC, 27695-7910, United States
Mohammed A. Zikry
Affiliation:
zikry@ncsu.edu, North Carolina State University, Department of Mechanical and Aerospace Engineering, Raleigh, NC, 27695-7910, United States
Omid Rezvanian
Affiliation:
orezvan@ncsu.edu, North Carolina State University, Department of Mechanical and Aerospace Engineering, Raleigh, NC, 27695-7910, United States
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Abstract

The tailoring of thin film coatings comprised of high strength constituents,such as diamond like carbon and partially stabilized zirconia and ductileconstituents, such as gold and molybdenum is investigated by newmicrostructurally-based finite-element techniques for applications relatedto the wear, durability, and performance of these coatings over a broadrange of temperatures and loading conditions. The effects of contacttransfer films, grain-shape sizes and distributions, grain-boundarystructure and sliding, texture, and strength are used to determine theoptimal thin film coating compositions. Comparisons are made withexperimental measurements and observations, and guidelines for optimal thinfilm composite coatings are proposed.

Keywords

coatingsimulationcomposite

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