Thermal conductivity and bending strength of SiC composites reinforced by pitch-based carbon fibers
Abstract In this work, pitch-based carbon fibers were utilized to reinforce silicon carbide (SiC) composites via reaction melting infiltration (RMI) method by controlling the reaction temperature and resin carbon content. Thermal conductivities and bending strengths of composites obtained under diff...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2022-01-01
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| Series: | Journal of Advanced Ceramics |
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| Online Access: | https://doi.org/10.1007/s40145-021-0527-5 |
| _version_ | 1797708120138448896 |
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| author | Liyang Cao Yongsheng Liu Yunhai Zhang Yejie Cao Jingxin Li Jie Chen Lu Zhang Zheng Qi |
| author_facet | Liyang Cao Yongsheng Liu Yunhai Zhang Yejie Cao Jingxin Li Jie Chen Lu Zhang Zheng Qi |
| author_sort | Liyang Cao |
| collection | DOAJ |
| description | Abstract In this work, pitch-based carbon fibers were utilized to reinforce silicon carbide (SiC) composites via reaction melting infiltration (RMI) method by controlling the reaction temperature and resin carbon content. Thermal conductivities and bending strengths of composites obtained under different preparation conditions were characterized by various analytical methods. Results showed the formation of SiC whiskers (SiCw) during RMI process according to vapor—solid (VS) mechanism. SiCw played an important role in toughening the Cpf/SiC composites due to crack bridging, crack deflection, and SiCw pull-out. Increase in reaction temperature during RMI process led to an initial increase in thermal conductivity along in-plane and thickness directions of composites, followed by a decline. At reaction temperature of 1600 °C, thermal conductivities along the in-plane and thickness directions were estimated to be 203.00 and 39.59 W/(m·K), respectively. Under these conditions, bending strength was recorded as 186.15±3.95 MPa. Increase in resin carbon content before RMI process led to the generation of more SiC matrix. Thermal conductivities along in-plane and thickness directions remained stable with desirable values of 175.79 and 38.86 W/(m·K), respectively. By comparison, optimal bending strength improved to 244.62±3.07 MPa. In sum, these findings look promising for future application of pitch-based carbon fibers for reinforcement of SiC ceramic composites. |
| first_indexed | 2024-03-12T06:16:45Z |
| format | Article |
| id | doaj.art-67475ee53c714e1aa515e2473cf19a9d |
| institution | Directory Open Access Journal |
| issn | 2226-4108 2227-8508 |
| language | English |
| last_indexed | 2024-03-12T06:16:45Z |
| publishDate | 2022-01-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj.art-67475ee53c714e1aa515e2473cf19a9d2023-09-03T02:29:19ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082022-01-0111224726210.1007/s40145-021-0527-5Thermal conductivity and bending strength of SiC composites reinforced by pitch-based carbon fibersLiyang Cao0Yongsheng Liu1Yunhai Zhang2Yejie Cao3Jingxin Li4Jie Chen5Lu Zhang6Zheng Qi7Science and Technology on Thermostructural Composites Materials Laboratory, Northwestern Polytechnical UniversityScience and Technology on Thermostructural Composites Materials Laboratory, Northwestern Polytechnical UniversityScience and Technology on Thermostructural Composites Materials Laboratory, Northwestern Polytechnical UniversityScience and Technology on Thermostructural Composites Materials Laboratory, Northwestern Polytechnical UniversityScience and Technology on Thermostructural Composites Materials Laboratory, Northwestern Polytechnical UniversityScience and Technology on Thermostructural Composites Materials Laboratory, Northwestern Polytechnical UniversityScience and Technology on Space Physics LaboratoryScience and Technology on Space Physics LaboratoryAbstract In this work, pitch-based carbon fibers were utilized to reinforce silicon carbide (SiC) composites via reaction melting infiltration (RMI) method by controlling the reaction temperature and resin carbon content. Thermal conductivities and bending strengths of composites obtained under different preparation conditions were characterized by various analytical methods. Results showed the formation of SiC whiskers (SiCw) during RMI process according to vapor—solid (VS) mechanism. SiCw played an important role in toughening the Cpf/SiC composites due to crack bridging, crack deflection, and SiCw pull-out. Increase in reaction temperature during RMI process led to an initial increase in thermal conductivity along in-plane and thickness directions of composites, followed by a decline. At reaction temperature of 1600 °C, thermal conductivities along the in-plane and thickness directions were estimated to be 203.00 and 39.59 W/(m·K), respectively. Under these conditions, bending strength was recorded as 186.15±3.95 MPa. Increase in resin carbon content before RMI process led to the generation of more SiC matrix. Thermal conductivities along in-plane and thickness directions remained stable with desirable values of 175.79 and 38.86 W/(m·K), respectively. By comparison, optimal bending strength improved to 244.62±3.07 MPa. In sum, these findings look promising for future application of pitch-based carbon fibers for reinforcement of SiC ceramic composites.https://doi.org/10.1007/s40145-021-0527-5pitch-based carbon fibercontinuous carbon fiber reinforced silicon carbide matrix composites (C/SiC)thermal conductivitybending strength |
| spellingShingle | Liyang Cao Yongsheng Liu Yunhai Zhang Yejie Cao Jingxin Li Jie Chen Lu Zhang Zheng Qi Thermal conductivity and bending strength of SiC composites reinforced by pitch-based carbon fibers Journal of Advanced Ceramics pitch-based carbon fiber continuous carbon fiber reinforced silicon carbide matrix composites (C/SiC) thermal conductivity bending strength |
| title | Thermal conductivity and bending strength of SiC composites reinforced by pitch-based carbon fibers |
| title_full | Thermal conductivity and bending strength of SiC composites reinforced by pitch-based carbon fibers |
| title_fullStr | Thermal conductivity and bending strength of SiC composites reinforced by pitch-based carbon fibers |
| title_full_unstemmed | Thermal conductivity and bending strength of SiC composites reinforced by pitch-based carbon fibers |
| title_short | Thermal conductivity and bending strength of SiC composites reinforced by pitch-based carbon fibers |
| title_sort | thermal conductivity and bending strength of sic composites reinforced by pitch based carbon fibers |
| topic | pitch-based carbon fiber continuous carbon fiber reinforced silicon carbide matrix composites (C/SiC) thermal conductivity bending strength |
| url | https://doi.org/10.1007/s40145-021-0527-5 |
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