Constructing orthogonally structured graphene nanointerface on SiC nanowires reinforced carbon/carbon composites to boost mechanical strength and strength retention rate

作     者：Yao Guo Shouyang Zhang Qiang Song Fei Zhao Longkang Cong Wei Li Ruimei Yuan 

作者机构：State Key Laboratory of Solidification ProcessingShaanxi Key Laboratory of Fiber Reinforced Light Composite MaterialsNorthwestern Polytechnical UniversityXi'an 710072China Advanced Interdisciplinary Research Center for Flexible ElectronicsAcademy of Advanced Interdisciplinary ResearchXidian UniversityXi'an 710072China 

出 版 物：《Journal of Materiomics》 (无机材料学学报（英文）)

年 卷 期：2024年第10卷第3期

页      面：615-623页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.52222204) the Joint Funds of the National Natural Science Foundation of China(Grant No.U21B2067) the Key R&D Program of Shaanxi Province(Grant Nos.2019ZDLGY04-02 and 2021ZDLGY14-04) Natural Science Basic Research Plan in Shaanxi(2022JC-25) GuangDong Basic and Applied Basic Research Foundation(2022A1515111220) 

主　　题：SiC nanowires Orthogonally structured graphene nanosheets Carbon/carbon composites Mechanical properties Heat treatment 

摘      要：Carbon/carbon composites with higher mechanical strength and better reliability at elevated tempera-tures are urgently needed to satisfy the practical applications *** nanowires(SiCNWs)modified C/C(SC-CC)composites have attracted an abundance of attention for their excellent mechanical *** further boost the mechanical strengths of composites and maximize the reinforcing efficiency of SiCNWs,we introduce orthogonally structured graphene nanosheets(OGNs)into SC-CC composites,in which OGNs are grafted on the SiCNWs via chemical vapor deposition(CVD)method,forming SC-G-CC *** from the nano-interface effects,uniform stress distribution,strong SiCNWs/PyC interfacial bonding and elevated stress propagation efficiency in the PyC matrix are achieved,thus SC-G-CC composites accomplish brilliant mechanical properties before and after 1,600℃ heat *** temperature rises to 2,100℃,SiCNWs lose efficacy,whereas OGNs with excellent thermal stability continue to play the nano-interface role in the PyC ***,SC-G-CC com-posites show better mechanical performance after 2,100℃ heat treatment,and the mechanical strength retention rate(MSR)of interlaminar shear strength,out-of-plane and in-plane compressive strength of SC-G-CC composites reach 61.0%,55.7%and 55.3%,*** work proposes an alternative thought for maximizing the potentiality of nanomaterials and edifies the mechanical modification of composites.