Interface Characterisation by Transmission Electron Microscopy and Auger Electron Spectroscopy in Tough SiC Fiber (Nicalon)-SiC Matrix Composite with a Boron Nitride Interphase

作者: O. Dugne , S. Prouhet , A. Guette , R. Naslain , J. Sevely

DOI: 10.1007/978-94-009-1123-9_17

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摘要: The toughness of SiC fiber (Nicalon)/SiC matrix composites is increased when an interphase, made a soft material (e.g. pyrocarbon or boron nitride) and playing the role mechanical fuse, present at fiber-matrix interfaces. BN-interphase, deposited from gaseous BF3-NH3 precursor, has been analyzed both chemically microstructurally by TEM AES, as well associated fiber-interphase matrix-interphase sequence materials observed boundary is: matrix/BN interphase/SiO2/carbon/Nicalon fiber.

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