Compressive deformation of liquid phase-sintered porous silicon carbide ceramics
Porous silicon carbide ceramics were fabricated by liquid phase sintering with 1 wt% Al2O3–1 wt% Y2O3 additives during hot-pressing at 1400–1900 °C. The longitudinal strain at compressive fracture increased at a higher porosity and was larger than the lateral strain. The compressive Young's mod...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2014-12-01
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| Series: | Journal of Asian Ceramic Societies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S218707641400089X |
| _version_ | 1818439493581012992 |
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| author | Taro Shimonosono Syota Ikeyama Yoshihiro Hirata Soichiro Sameshima |
| author_facet | Taro Shimonosono Syota Ikeyama Yoshihiro Hirata Soichiro Sameshima |
| author_sort | Taro Shimonosono |
| collection | DOAJ |
| description | Porous silicon carbide ceramics were fabricated by liquid phase sintering with 1 wt% Al2O3–1 wt% Y2O3 additives during hot-pressing at 1400–1900 °C. The longitudinal strain at compressive fracture increased at a higher porosity and was larger than the lateral strain. The compressive Young's modulus and the strain at fracture depended on the measured direction, and increased with the decreased specific surface area due to the formation of grain boundary. However, the compressive strength and the fracture energy were not sensitive to the measured direction. The compressive strength of a porous SiC compact increased with increasing grain boundary area. According to the theoretical modeling of the strength–grain boundary area relation, it is interpreted that the grain boundary of a porous SiC compact is fractured by shear deformation rather than by compressive deformation. |
| first_indexed | 2024-12-14T17:57:20Z |
| format | Article |
| id | doaj.art-5a7df01ffddf47e694058c6261994ac8 |
| institution | Directory Open Access Journal |
| issn | 2187-0764 |
| language | English |
| last_indexed | 2024-12-14T17:57:20Z |
| publishDate | 2014-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Ceramic Societies |
| spelling | doaj.art-5a7df01ffddf47e694058c6261994ac82022-12-21T22:52:31ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642014-12-012442242810.1016/j.jascer.2014.09.002Compressive deformation of liquid phase-sintered porous silicon carbide ceramicsTaro ShimonosonoSyota IkeyamaYoshihiro HirataSoichiro SameshimaPorous silicon carbide ceramics were fabricated by liquid phase sintering with 1 wt% Al2O3–1 wt% Y2O3 additives during hot-pressing at 1400–1900 °C. The longitudinal strain at compressive fracture increased at a higher porosity and was larger than the lateral strain. The compressive Young's modulus and the strain at fracture depended on the measured direction, and increased with the decreased specific surface area due to the formation of grain boundary. However, the compressive strength and the fracture energy were not sensitive to the measured direction. The compressive strength of a porous SiC compact increased with increasing grain boundary area. According to the theoretical modeling of the strength–grain boundary area relation, it is interpreted that the grain boundary of a porous SiC compact is fractured by shear deformation rather than by compressive deformation.http://www.sciencedirect.com/science/article/pii/S218707641400089XCompressive strengthPorosityLiquid phase sinteringSilicon carbide |
| spellingShingle | Taro Shimonosono Syota Ikeyama Yoshihiro Hirata Soichiro Sameshima Compressive deformation of liquid phase-sintered porous silicon carbide ceramics Journal of Asian Ceramic Societies Compressive strength Porosity Liquid phase sintering Silicon carbide |
| title | Compressive deformation of liquid phase-sintered porous silicon carbide ceramics |
| title_full | Compressive deformation of liquid phase-sintered porous silicon carbide ceramics |
| title_fullStr | Compressive deformation of liquid phase-sintered porous silicon carbide ceramics |
| title_full_unstemmed | Compressive deformation of liquid phase-sintered porous silicon carbide ceramics |
| title_short | Compressive deformation of liquid phase-sintered porous silicon carbide ceramics |
| title_sort | compressive deformation of liquid phase sintered porous silicon carbide ceramics |
| topic | Compressive strength Porosity Liquid phase sintering Silicon carbide |
| url | http://www.sciencedirect.com/science/article/pii/S218707641400089X |
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