Measurement of interfacial shear mechanical properties in thermal barrier coating systems by a barb pullout method

A test technique has been developed to facilitate evaluation of the fracture characteristics of coatings and interfaces in thermal barrier coating (TBC) systems. The methodology has particular application in analyzing delamination crack growth, where crack propagation occurs under predominantly mode...

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Bibliographic Details
Published in:Scripta materialia 2005-11, Vol.53 (9), p.1043-1048
Main Authors: Guo, S.Q., Mumm, D.R., Karlsson, A.M., Kagawa, Y.
Format: Article
Language:English
Subjects:
Applied sciences
Barb pullout method
Delamination
EB-PVD TBC
Exact sciences and technology
Fractures
Interface toughness
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Nonmetallic coatings
Production techniques
Surface treatment
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Summary:A test technique has been developed to facilitate evaluation of the fracture characteristics of coatings and interfaces in thermal barrier coating (TBC) systems. The methodology has particular application in analyzing delamination crack growth, where crack propagation occurs under predominantly mode II loading. The technique has been demonstrated by quantitatively measuring the effective delamination fracture resistance of an electron-beam physical vapor deposition TBC.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2005.07.012