Multi scale characterization of SiC/SiC composite materials

D. Frazer, M. D. Abad, C. Back, C. Deck, P. Hosemann

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SiC fiber-reinforced SiC matrix composites (SiC/SiC) are under consideration as a structural material for a range of nuclear applications. While these materials have been studied for decades, recently new small scale materials testing techniques have emerged which can be used to characterize SiC/SiC materials from a new perspective. In this work cross section nanoindentation was performed on SiC/SiC composites revealing that both the hardness and Young’s modulus was substantially lower in the fiber compared to the matrix despite both being SiC. Using a Scanning Electron Microscopy (SEM) it was observed that the grain growth of the matrix during formation was radially out from the fiber with a changing grain structure as a function of radius from the fiber center. Focused ion beam machining was used to manufacture micro-cantilever samples and evaluate the fracture toughness and fracture strength in the matrix as a function of grain orientation in the matrix.

Idioma originalAnglès
Títol de la publicacióAdvanced Composites for Aerospace, Marine, and Land Applications
EditorSpringer International Publishing
Nombre de pàgines11
ISBN (electrònic)9783319480961
ISBN (imprès)9781118888919
Estat de la publicacióPublicada - 1 de gen. 2016
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