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Communication Dans Un Congrès Année : 2004

BN Interphase Processed by LP-CVD from Tris(Dimethylamino)Borane and Characterized using SiC/SiC Minicomposites

Résumé

SiC/BN/SiC 1D minicomposites were produced by infiltration of a Hi-Nicalon (from Nippon Carbon, Japan) fiber tow in a Low Pressure Chemical Vapor Deposition reactor. Tris(dimethylamino)borane was used as a halogenide-free precursor for the BN interphase processing. This precursor prevents fiber and CVD apparatus from chemical damage. FT-IR and XPS analyses have confirmed the boron nitride nature of the films. Minicomposite tensile tests with unload-reload cycles have shown that the minicomposite mechanical properties are good with a high interfacial shear stress. Transmission electron microscopy observation of the interphase reveals that it is made of an anisotropic turbostratic material. Furthermore, the fiber/matrix debonding, which occurs during mechanical loading, is located within the BN interphase itself.

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Matériaux
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Dates et versions

hal-01546357 , version 1 (23-06-2017)
hal-01546357 , version 2 (12-04-2018)

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Citer

Sylvain Jacques, Bernard Bonnetot, Marie-Paule Berthet, Henri Vincent, M.-P Berthet. BN Interphase Processed by LP-CVD from Tris(Dimethylamino)Borane and Characterized using SiC/SiC Minicomposites. 28th International Conference on Advanced Ceramics and Composites , Jan 2004, Cocoa Beach, United States. pp.123-128, ⟨10.1002/9780470291191.ch20⟩. ⟨hal-01546357v2⟩
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