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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Veröffentlicht in:	Scripta materialia 2005-11, Vol.53 (9), p.1043-1048
Hauptverfasser:	Guo, S.Q., Mumm, D.R., Karlsson, A.M., Kagawa, Y.
Format:	Artikel
Sprache:	eng
Schlagworte:	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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Beschreibung
Zusammenfassung:	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