On the Elastic Properties of PVD Coatings in Relation to Their Microstructure

[+] Author and Article Information
I. Sevostianov

Department of Mechanical Engineering, New Mexico State University, Las Cruces, NM 88003

M. Kachanov

Department of Mechanical Engineering, Tufts University, Medford, MA 02143

J. Ruud

GE Corporate Research and Development, P.O. Box 8, Schenectady, NY 12301

J. Eng. Mater. Technol 124(2), 246-249 (Mar 26, 2002) (4 pages) doi:10.1115/1.1446074 History: Received February 07, 2001; Revised September 07, 2001; Online March 26, 2002
Copyright © 2002 by ASME
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Johnson,  C. A., Ruud,  J. A., Bruce,  R., and Wortman,  D., 1998, “Relationship between residual stress, microstructure and mechanical properties of electron beam-physical vapor deposition thermal barrier coatings,” Surf. Coat. Technol., 108-109, pp. 80–85.
Kachanov,  M., Tsukrov,  I., and Shafiro,  B., 1994, “Effective moduli of solids with cavities of various shapes,” Appl. Mech. Rev., 47(1), pp. S151–S174.
Leigh,  S.-H., and Berndt,  C., 1999, “Modeling of elastic constants of plasma-spray deposits with ellipsoid-shaped voids,” Acta Mater., 47, pp. 1575–1586.
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(a) Scanning electron micrograph of a typical PVD TBC on a metallic substrate; (b) higher magnification view of the contact points between columns
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Microstructure of PVD coating—an overview
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(a) Contacts of constant area; (b) Hertzian contacts



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