Thermal shock resistance and bonding strength of integrated quasi-EBC-SiCf/SiC composites fabricated by tape casting and reactive melt infiltration

IF 14.2 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY Composites Part B: Engineering Pub Date : 2025-01-31 DOI:10.1016/j.compositesb.2025.112190

Liang Zhou , Jianbao Hu , Wang Yuan , Feiyan Cai , Xiao You , Yanmei Kan , Yan Zhang , Xiangyu Zhang , Jinshan Yang , Xiaowu Chen , Shizhi Wu , Shaoming Dong

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Abstract

To enhance the service life and reliability of SiC_f/SiC composites after EBCs exfoliation, an integrated design concept is proposed to use Si reactive melt infiltration to prepare integrated EBC- SiC_f/SiC composites in this work. It can form a quasi-EBC layer with EBC components on the surface of SiC_f/SiC composites. The integrated structure has stronger bonding strength than the conventional coating and matrix. During thermal shock cycling, its thermal shock resistance can be enhanced by consuming SiO₂ to form Yb₂Si₂O₇ with good damage tolerance. Meanwhile, the presence of quasi-EBC layer is expected to provide secondary protection for SiC_f/SiC composites after conventional EBC stripping, which can improve the service life of SiC_f/SiC composites. This work provides a new idea for the long-life modification of SiC_f/SiC composites.

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带式铸造和反应熔体渗透制备准ebc - sicf /SiC复合材料的耐热震性和结合强度

为了提高EBCs剥离后SiCf/SiC复合材料的使用寿命和可靠性，本文提出了采用Si反应熔体渗透法制备集成EBC- SiCf/SiC复合材料的集成设计理念。它可以在SiCf/SiC复合材料表面形成具有EBC组分的准EBC层。与传统的涂层和基体相比，该整体结构具有更强的结合强度。在热冲击循环过程中，通过消耗SiO2形成具有良好损伤容限的Yb2Si2O7，可以增强其抗热冲击性能。同时，准EBC层的存在有望为常规EBC剥离后的SiCf/SiC复合材料提供二次保护，从而提高SiCf/SiC复合材料的使用寿命。本研究为SiCf/SiC复合材料的长寿命改性提供了新的思路。

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文献相关原料

公司名称

产品信息

阿拉丁

Yb2O3

来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.