{"title":"Preparation and mechanical behavior of Yb2Si2O7 interphase in SiCf/SiC minicomposites","authors":"Shuang Mu, Qin Ma, Yu Zhang, Xu Shen, Chunjing Liao, Xiangyu Zhang, Yusheng Ding, Shaoming Dong, Jinshan Yang","doi":"10.1111/jace.20153","DOIUrl":null,"url":null,"abstract":"<p>In this work, the Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> interphase was prepared on SiC fibers using the sol–gel method. The influence of sol concentration on the morphology of the interphase was discussed. After heat treatment in argon at 1200°C for 1 h, the Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> was grown in situ on the fiber surface, forming an interphase layer. Then, SiC<sub>f</sub>/Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>/SiC minicomposites were prepared by chemical vapor infiltration (CVI). The Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> interphase exhibited no changes throughout the high-temperature preparation process and maintained stability and compatibility with the fiber and matrix. The tensile strength of SiC<sub>f</sub>/Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>/SiC minicomposites with Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> interphase was significantly higher than SiC<sub>f</sub>/SiC minicomposites without interphase. The crack deflection, interfacial debonding, and fiber pullout were observed in the tensile fracture of the SiC<sub>f</sub>/Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>/SiC minicomposites.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 1","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the American Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jace.20153","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
In this work, the Yb2Si2O7 interphase was prepared on SiC fibers using the sol–gel method. The influence of sol concentration on the morphology of the interphase was discussed. After heat treatment in argon at 1200°C for 1 h, the Yb2Si2O7 was grown in situ on the fiber surface, forming an interphase layer. Then, SiCf/Yb2Si2O7/SiC minicomposites were prepared by chemical vapor infiltration (CVI). The Yb2Si2O7 interphase exhibited no changes throughout the high-temperature preparation process and maintained stability and compatibility with the fiber and matrix. The tensile strength of SiCf/Yb2Si2O7/SiC minicomposites with Yb2Si2O7 interphase was significantly higher than SiCf/SiC minicomposites without interphase. The crack deflection, interfacial debonding, and fiber pullout were observed in the tensile fracture of the SiCf/Yb2Si2O7/SiC minicomposites.
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The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials.
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