Failure behavior of interfacial domain in SiC-matrix based composites

作     者：Jinxue Ding Xiaokang Ma Xiaomeng Fan Jimei Xue Fang Ye Laifei Cheng Jinxue Ding;Xiaokang Ma;Xiaomeng Fan;Jimei Xue;Fang Ye;Laifei Cheng

作者机构：Science and Technology on Thermostructural Composite Materials LaboratoryNorthwestern Polytechnical UniversityXi'an710072China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第88卷第29期

页      面：1-10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：the support of IMDEA Materials Institute of Spain supported by the National Natural Science Foundation of China(Project Nos.52072303 and 51821091) 

主　　题：SiC-matrix based composites Interfacial domain Fiber push-in test Failure behavior Interfacial mechanical properties 

摘      要：In this work,the microstructure,failure behavior and interfacial properties with respective to the interfacial domain in SiCf/BN/SiC and C_(f)/PyC/SiC composites were studied via the fiber push-in *** differences in the mechanical response of the interfacial domain were *** the fiber push-in test for SiCf/BN/SiC,the interface debonding accompanied with interphase fracture occurred,resulting in an obvious sign of the onset of debonding on loading-displacement(P-u)*** the good continuity of P-u curves can be observed for Cf/PyC/SiC,which is due to that the failure is in the form of interface debonding along with interphase lateral slipping caused by the extension of buckled carbon fiber,without any interphase *** interfacial properties calculated from the fiber push-in test show that Cf/PyC/SiC possesses a weaker interfacial domain compared with SiC_(f)/BN/*** interfacial shear stress of SiCf/BN/SiC and C_(f)/PyC/SiC composites amounts 94.2 and 48.1 MPa,respectively.