Fabrication, microstructure, and properties of SiC/Al4SiC4 multiphase ceramics via an in-situ formed liquid phase sintering
Abstract The SiC/Al4SiC4 composites with the improved mechanical properties and thermal conductivity were fabricated by the in-situ reaction of polycarbosilane (PCS) and Al powders using spark plasma sintering. The addition of 5 wt% yttrium (Y) sintering additive was useful to obtain fully dense sam...
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2020-04-01
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| Series: | Journal of Advanced Ceramics |
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| Online Access: | http://link.springer.com/article/10.1007/s40145-020-0359-8 |
| _version_ | 1797725486533574656 |
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| author | Junwen Liu Xiaobing Zhou Peter Tatarko Qin Yuan Lan Zhang Hongjie Wang Zhengren Huang Qing Huang |
| author_facet | Junwen Liu Xiaobing Zhou Peter Tatarko Qin Yuan Lan Zhang Hongjie Wang Zhengren Huang Qing Huang |
| author_sort | Junwen Liu |
| collection | DOAJ |
| description | Abstract The SiC/Al4SiC4 composites with the improved mechanical properties and thermal conductivity were fabricated by the in-situ reaction of polycarbosilane (PCS) and Al powders using spark plasma sintering. The addition of 5 wt% yttrium (Y) sintering additive was useful to obtain fully dense samples after sintering at a relatively low temperature of 1650 °C, due to the formation of a liquid phase during sintering. The average particle size of the in-situ formed SiC was ~300 nm. The fracture toughness (4.9 MP·m1/2), Vickers hardness (16.3 GPa), and thermal conductivity (15.8 W/(m·K)) of the SiC/Al4SiC4 composite sintered at 1650 °C were significantly higher than the hardness (13.2 GPa), fracture toughness (2.16 MPa·m1/2), and thermal conductivity (7.8 W/(m·K)) of the monolithic Al4SiC4 ceramics. The improved mechanical and thermal properties of the composites were attributed to the high density, fine grain size, as well as the optimized grain boundary structure of the SiC/Al4SiC4 composites. |
| first_indexed | 2024-03-12T10:31:57Z |
| format | Article |
| id | doaj.art-af0f278bf21b44cbbfc21f1bda46908c |
| institution | Directory Open Access Journal |
| issn | 2226-4108 2227-8508 |
| language | English |
| last_indexed | 2024-03-12T10:31:57Z |
| publishDate | 2020-04-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj.art-af0f278bf21b44cbbfc21f1bda46908c2023-09-02T09:10:43ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082020-04-019219320310.1007/s40145-020-0359-8Fabrication, microstructure, and properties of SiC/Al4SiC4 multiphase ceramics via an in-situ formed liquid phase sinteringJunwen Liu0Xiaobing Zhou1Peter Tatarko2Qin Yuan3Lan Zhang4Hongjie Wang5Zhengren Huang6Qing Huang7State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong UniversityEngineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of SciencesInstitute of Inorganic Chemistry, Slovakia Academy of SciencesEngineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of SciencesState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong UniversityState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong UniversityEngineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of SciencesEngineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of SciencesAbstract The SiC/Al4SiC4 composites with the improved mechanical properties and thermal conductivity were fabricated by the in-situ reaction of polycarbosilane (PCS) and Al powders using spark plasma sintering. The addition of 5 wt% yttrium (Y) sintering additive was useful to obtain fully dense samples after sintering at a relatively low temperature of 1650 °C, due to the formation of a liquid phase during sintering. The average particle size of the in-situ formed SiC was ~300 nm. The fracture toughness (4.9 MP·m1/2), Vickers hardness (16.3 GPa), and thermal conductivity (15.8 W/(m·K)) of the SiC/Al4SiC4 composite sintered at 1650 °C were significantly higher than the hardness (13.2 GPa), fracture toughness (2.16 MPa·m1/2), and thermal conductivity (7.8 W/(m·K)) of the monolithic Al4SiC4 ceramics. The improved mechanical and thermal properties of the composites were attributed to the high density, fine grain size, as well as the optimized grain boundary structure of the SiC/Al4SiC4 composites.http://link.springer.com/article/10.1007/s40145-020-0359-8Al4SiC4SiCY3Si2C2spark plasma sintering |
| spellingShingle | Junwen Liu Xiaobing Zhou Peter Tatarko Qin Yuan Lan Zhang Hongjie Wang Zhengren Huang Qing Huang Fabrication, microstructure, and properties of SiC/Al4SiC4 multiphase ceramics via an in-situ formed liquid phase sintering Journal of Advanced Ceramics Al4SiC4 SiC Y3Si2C2 spark plasma sintering |
| title | Fabrication, microstructure, and properties of SiC/Al4SiC4 multiphase ceramics via an in-situ formed liquid phase sintering |
| title_full | Fabrication, microstructure, and properties of SiC/Al4SiC4 multiphase ceramics via an in-situ formed liquid phase sintering |
| title_fullStr | Fabrication, microstructure, and properties of SiC/Al4SiC4 multiphase ceramics via an in-situ formed liquid phase sintering |
| title_full_unstemmed | Fabrication, microstructure, and properties of SiC/Al4SiC4 multiphase ceramics via an in-situ formed liquid phase sintering |
| title_short | Fabrication, microstructure, and properties of SiC/Al4SiC4 multiphase ceramics via an in-situ formed liquid phase sintering |
| title_sort | fabrication microstructure and properties of sic al4sic4 multiphase ceramics via an in situ formed liquid phase sintering |
| topic | Al4SiC4 SiC Y3Si2C2 spark plasma sintering |
| url | http://link.springer.com/article/10.1007/s40145-020-0359-8 |
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