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A simple method for measurement of shear delamination toughness in environmental barrier coatings
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DOI：10.1016/j.surfcoat.2017.03.073.png)
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Abstract
En 中文
A simple technique for measurement of delamination toughness in environmental barrier coatings (EBCs) under shear loading has been developed. The technique overcomes micro damage accumulation properties of CMC substrate and a delamination toughness with a phase angle of similar to 80 degrees could be obtained using a simple fixture. Demonstration of the present procedure is carried out using a BSAS/mullite + BSAS/Si standard EBC layer on a three-dimensional woven fabric SiC/SiC composite substrate. The delamination path suggests that it is possible to apply the method to wavy EBC coatings and also to thermal barrier coatings. (C) 2017 Elsevier B.V. All rights reserved.
Keywords:
Environmental barrier coatings (EBCs)
Delamination
Toughness
SiC/SiC
Test method
Shear loading
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