Interphase optimization of SiCf/Si3N4 composites
SiC fiber reinforced Si3N4 composites (SiCf/Si3N4) were prepared by chemical vapor infiltration, and the mechanical properties were optimized by tailoring the BN interphase thickness. The microstructure was characterized by transmission electron microscope and scanning electron microscope, and the e...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Journal of Aeronautical Materials
2023-06-01
|
| Series: | Journal of Aeronautical Materials |
| Subjects: | |
| Online Access: | http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2022.000184 |
| _version_ | 1797808090241826816 |
|---|---|
| author | DENG Yangfang CHEN Xu WANG Tongtong FAN Xiaomeng |
| author_facet | DENG Yangfang CHEN Xu WANG Tongtong FAN Xiaomeng |
| author_sort | DENG Yangfang |
| collection | DOAJ |
| description | SiC fiber reinforced Si3N4 composites (SiCf/Si3N4) were prepared by chemical vapor infiltration, and the mechanical properties were optimized by tailoring the BN interphase thickness. The microstructure was characterized by transmission electron microscope and scanning electron microscope, and the evolution of mechanical properties was revealed by the finite element analysis. The results show that with the increase of BN interphase thickness from 290 to 550 nm, the flexural strength is increased from （190±39）MPa to （317±28）MPa, the fracture toughness is increased from （7.3±1.6）MPa·m1/2 to （14.7±0.5）MPa·m1/2, and the tensile strength is increased from （89±3）MPa to （176±17）MPa. The residual stress of the fiber decreases rapidly with the increase of BN interphase thickness, and the thermal mismatch is effectively alleviated， which makes the material show better mechanical properties. |
| first_indexed | 2024-03-13T06:32:20Z |
| format | Article |
| id | doaj.art-ce2f618cf6f14c078bd5a3d8f506281c |
| institution | Directory Open Access Journal |
| issn | 1005-5053 |
| language | zho |
| last_indexed | 2024-03-13T06:32:20Z |
| publishDate | 2023-06-01 |
| publisher | Journal of Aeronautical Materials |
| record_format | Article |
| series | Journal of Aeronautical Materials |
| spelling | doaj.art-ce2f618cf6f14c078bd5a3d8f506281c2023-06-09T08:41:54ZzhoJournal of Aeronautical MaterialsJournal of Aeronautical Materials1005-50532023-06-01433727810.11868/j.issn.1005-5053.2022.0001842022-0184Interphase optimization of SiCf/Si3N4 compositesDENG Yangfang0CHEN Xu1WANG Tongtong2FAN Xiaomeng3AECC Sichuan Gas Turbine Research Institute, Chengdu 610500，ChinaXi’an Xinyao Ceramic Composite Materials Co., Ltd., Xi’an 710117，ChinaScience and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an，710072，ChinaScience and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an，710072，ChinaSiC fiber reinforced Si3N4 composites (SiCf/Si3N4) were prepared by chemical vapor infiltration, and the mechanical properties were optimized by tailoring the BN interphase thickness. The microstructure was characterized by transmission electron microscope and scanning electron microscope, and the evolution of mechanical properties was revealed by the finite element analysis. The results show that with the increase of BN interphase thickness from 290 to 550 nm, the flexural strength is increased from （190±39）MPa to （317±28）MPa, the fracture toughness is increased from （7.3±1.6）MPa·m1/2 to （14.7±0.5）MPa·m1/2, and the tensile strength is increased from （89±3）MPa to （176±17）MPa. The residual stress of the fiber decreases rapidly with the increase of BN interphase thickness, and the thermal mismatch is effectively alleviated， which makes the material show better mechanical properties.http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2022.000184integration of mechanical and microwave absorbing performanceceramic matrix compositesinterphase optimizationstrengthening and toughening |
| spellingShingle | DENG Yangfang CHEN Xu WANG Tongtong FAN Xiaomeng Interphase optimization of SiCf/Si3N4 composites Journal of Aeronautical Materials integration of mechanical and microwave absorbing performance ceramic matrix composites interphase optimization strengthening and toughening |
| title | Interphase optimization of SiCf/Si3N4 composites |
| title_full | Interphase optimization of SiCf/Si3N4 composites |
| title_fullStr | Interphase optimization of SiCf/Si3N4 composites |
| title_full_unstemmed | Interphase optimization of SiCf/Si3N4 composites |
| title_short | Interphase optimization of SiCf/Si3N4 composites |
| title_sort | interphase optimization of sicf si3n4 composites |
| topic | integration of mechanical and microwave absorbing performance ceramic matrix composites interphase optimization strengthening and toughening |
| url | http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2022.000184 |
| work_keys_str_mv | AT dengyangfang interphaseoptimizationofsicfsi3n4composites AT chenxu interphaseoptimizationofsicfsi3n4composites AT wangtongtong interphaseoptimizationofsicfsi3n4composites AT fanxiaomeng interphaseoptimizationofsicfsi3n4composites |