Effects of temperature and additives content on SiC ceramics prepared by spark plasma sintering
SiC ceramics were sintered with Al2O3-Y2O3-CaO as additives. The effects of sintering temperature and additives content on the relative density, polytype, microstructure and mechanical properties of SiC ceramics were investigated by Archimedes drainage method, XRD, SEM, TEM and Vickers hardness test...
| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2023-03-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000584 |
| _version_ | 1797858883100737536 |
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| author | GAO Ding SUN Shijie JIAO Jian |
| author_facet | GAO Ding SUN Shijie JIAO Jian |
| author_sort | GAO Ding |
| collection | DOAJ |
| description | SiC ceramics were sintered with Al2O3-Y2O3-CaO as additives. The effects of sintering temperature and additives content on the relative density, polytype, microstructure and mechanical properties of SiC ceramics were investigated by Archimedes drainage method, XRD, SEM, TEM and Vickers hardness test. The results show that the relative density, hardness and fracture toughness of SiC ceramics increase firstly and then decrease from 1300 ℃ to 1800 ℃, and reach the maximum at 1700 ℃. The phase transformation from β-SiC to α-SiC occurs between 1700 ℃ and 1800 ℃. Reducing the content of additives can increase the grain boundary bonding strength, and can improve the hardness and inhibition of the grain growth. Under the condition of 1700 ℃ and 7% (mass fraction) additives content, the best sintering results are obtained, with relative density, hardness and toughness of 97.9%, 23.3 GPa and 4.1 MPa·m1/2, respectively. |
| first_indexed | 2024-04-09T21:20:35Z |
| format | Article |
| id | doaj.art-6bf5e9bfaae74632bf6e3c7a088048dc |
| institution | Directory Open Access Journal |
| issn | 1001-4381 |
| language | zho |
| last_indexed | 2024-04-09T21:20:35Z |
| publishDate | 2023-03-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-6bf5e9bfaae74632bf6e3c7a088048dc2023-03-28T06:25:01ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812023-03-01513525810.11868/j.issn.1001-4381.2021.00058420230305Effects of temperature and additives content on SiC ceramics prepared by spark plasma sinteringGAO Ding0SUN Shijie1JIAO Jian2National Key Laboratory of Advanced Composites, AECC Beijing nstitute of Aeronautical Materials, Beijing 100095, ChinaNational Key Laboratory of Advanced Composites, AECC Beijing nstitute of Aeronautical Materials, Beijing 100095, ChinaNational Key Laboratory of Advanced Composites, AECC Beijing nstitute of Aeronautical Materials, Beijing 100095, ChinaSiC ceramics were sintered with Al2O3-Y2O3-CaO as additives. The effects of sintering temperature and additives content on the relative density, polytype, microstructure and mechanical properties of SiC ceramics were investigated by Archimedes drainage method, XRD, SEM, TEM and Vickers hardness test. The results show that the relative density, hardness and fracture toughness of SiC ceramics increase firstly and then decrease from 1300 ℃ to 1800 ℃, and reach the maximum at 1700 ℃. The phase transformation from β-SiC to α-SiC occurs between 1700 ℃ and 1800 ℃. Reducing the content of additives can increase the grain boundary bonding strength, and can improve the hardness and inhibition of the grain growth. Under the condition of 1700 ℃ and 7% (mass fraction) additives content, the best sintering results are obtained, with relative density, hardness and toughness of 97.9%, 23.3 GPa and 4.1 MPa·m1/2, respectively.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000584silicon carbidesintering temperaturesintering additivemicrostructuremechanical property |
| spellingShingle | GAO Ding SUN Shijie JIAO Jian Effects of temperature and additives content on SiC ceramics prepared by spark plasma sintering Cailiao gongcheng silicon carbide sintering temperature sintering additive microstructure mechanical property |
| title | Effects of temperature and additives content on SiC ceramics prepared by spark plasma sintering |
| title_full | Effects of temperature and additives content on SiC ceramics prepared by spark plasma sintering |
| title_fullStr | Effects of temperature and additives content on SiC ceramics prepared by spark plasma sintering |
| title_full_unstemmed | Effects of temperature and additives content on SiC ceramics prepared by spark plasma sintering |
| title_short | Effects of temperature and additives content on SiC ceramics prepared by spark plasma sintering |
| title_sort | effects of temperature and additives content on sic ceramics prepared by spark plasma sintering |
| topic | silicon carbide sintering temperature sintering additive microstructure mechanical property |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000584 |
| work_keys_str_mv | AT gaoding effectsoftemperatureandadditivescontentonsicceramicspreparedbysparkplasmasintering AT sunshijie effectsoftemperatureandadditivescontentonsicceramicspreparedbysparkplasmasintering AT jiaojian effectsoftemperatureandadditivescontentonsicceramicspreparedbysparkplasmasintering |