Interfacial properties of SiC f /SiC minicomposites with a scheelite coating

Unidirectional SiC /SiC minicomposite with a scheelite (CaWO ) interphase coating was fabricated through the precursor infiltration and pyrolysis method. Fractography of the SiC /SiC minicomposites indicated that weak fiber/matrix bonding can be provided by the CaWO interphase. Furthermore, interfac...

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Bibliographic Details
Published inScientific reports Vol. 12; no. 1; p. 21950
Main Authors Ni, Na, Wu, Binbin, Shi, Yinchun, Fan, Xiaohui, Li, Chuanwei
Format Journal Article
LanguageEnglish
Published England 19.12.2022
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Summary:Unidirectional SiC /SiC minicomposite with a scheelite (CaWO ) interphase coating was fabricated through the precursor infiltration and pyrolysis method. Fractography of the SiC /SiC minicomposites indicated that weak fiber/matrix bonding can be provided by the CaWO interphase. Furthermore, interfacial debonding stress of SiC /CaWO /SiC minicomposite was evaluated through the fiber push-out test, and estimated to be 80.7 ± 4.6 MPa. In-situ tensile SEM observation of SiC /CaWO /SiC minicomposite after oxidation at 1000-1100 °C was carried out, and thermal compatibility between CaWO interphase coating and SiC fiber or matrix after heat treatment at 1300 °C was investigated.
ISSN:2045-2322