Effect of CeO2-Y2O3 sintering aids on the microstructure and properties of corundum-based composite ceramics
ABSTRACTReducing the preparation cost of alumina ceramics has received significant attention, as alumina is one of the most widely used structural ceramics. In this study, corundum-based composite ceramics with a white corundum-to-zircon powder mass ratio of 7:3 were selected as the matrix. CeO2 and...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-10-01
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| Series: | Journal of Asian Ceramic Societies |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21870764.2023.2264608 |
| _version_ | 1797612154347585536 |
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| author | Yuhang Du Chenxi Song Yulin Wei Deli Ma Baocai Pan Mengyong Sun Guopu Shi Zhi Wang Qinggang Li |
| author_facet | Yuhang Du Chenxi Song Yulin Wei Deli Ma Baocai Pan Mengyong Sun Guopu Shi Zhi Wang Qinggang Li |
| author_sort | Yuhang Du |
| collection | DOAJ |
| description | ABSTRACTReducing the preparation cost of alumina ceramics has received significant attention, as alumina is one of the most widely used structural ceramics. In this study, corundum-based composite ceramics with a white corundum-to-zircon powder mass ratio of 7:3 were selected as the matrix. CeO2 and Y2O3 doped corundum-based composite ceramics were prepared via pressureless sintering. The total content of CeO2-Y2O3 was set at 10 wt% to study the effects of different temperatures and CeO2-Y2O3 ratios on the properties of the corundum-based composite ceramics. Physical phase and microstructural analyses of the corundum-based composite ceramics were performed using X-ray diffraction and scanning electron microscopy, respectively. The results showed that the sintering temperature of the corundum-based composite ceramics could be effectively reduced by using a solid solution of CeO2 and Y2O3. The best sintering temperature was 1400°C, and the best composition was 5 wt% CeO2-5 wt% Y2O3. The physical properties of the corundum-based composite ceramics prepared under these technological conditions include a flexural strength of 386.2 MPa, hardness of 13.5 GPa, density of 3.9128 g/cm3, linear shrinkage of 16.31% and an apparent porosity of 0.62%. |
| first_indexed | 2024-03-11T06:38:20Z |
| format | Article |
| id | doaj.art-f476602e2551482bab1f3738622d578b |
| institution | Directory Open Access Journal |
| issn | 2187-0764 |
| language | English |
| last_indexed | 2024-03-11T06:38:20Z |
| publishDate | 2023-10-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Ceramic Societies |
| spelling | doaj.art-f476602e2551482bab1f3738622d578b2023-11-17T10:47:32ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642023-10-0111451752510.1080/21870764.2023.2264608Effect of CeO2-Y2O3 sintering aids on the microstructure and properties of corundum-based composite ceramicsYuhang Du0Chenxi Song1Yulin Wei2Deli Ma3Baocai Pan4Mengyong Sun5Guopu Shi6Zhi Wang7Qinggang Li8School of Material Science and Engineering, University of Jinan, Jinan, PR ChinaSchool of Material Science and Engineering, University of Jinan, Jinan, PR ChinaSchool of Material Science and Engineering, University of Jinan, Jinan, PR ChinaTiannuo Photoelectric Materials Co., LTD, Jinan, ChinaBeijing Guoruisheng Technology Co., LTD, Beijing, ChinaNo. 52 Institute of China North Industry Group, Yantai, ChinaSchool of Material Science and Engineering, University of Jinan, Jinan, PR ChinaSchool of Material Science and Engineering, University of Jinan, Jinan, PR ChinaSchool of Material Science and Engineering, University of Jinan, Jinan, PR ChinaABSTRACTReducing the preparation cost of alumina ceramics has received significant attention, as alumina is one of the most widely used structural ceramics. In this study, corundum-based composite ceramics with a white corundum-to-zircon powder mass ratio of 7:3 were selected as the matrix. CeO2 and Y2O3 doped corundum-based composite ceramics were prepared via pressureless sintering. The total content of CeO2-Y2O3 was set at 10 wt% to study the effects of different temperatures and CeO2-Y2O3 ratios on the properties of the corundum-based composite ceramics. Physical phase and microstructural analyses of the corundum-based composite ceramics were performed using X-ray diffraction and scanning electron microscopy, respectively. The results showed that the sintering temperature of the corundum-based composite ceramics could be effectively reduced by using a solid solution of CeO2 and Y2O3. The best sintering temperature was 1400°C, and the best composition was 5 wt% CeO2-5 wt% Y2O3. The physical properties of the corundum-based composite ceramics prepared under these technological conditions include a flexural strength of 386.2 MPa, hardness of 13.5 GPa, density of 3.9128 g/cm3, linear shrinkage of 16.31% and an apparent porosity of 0.62%.https://www.tandfonline.com/doi/10.1080/21870764.2023.2264608Corundum-based composite ceramicssintering aidspressureless sinteringmechanical propertiesmicrostructure |
| spellingShingle | Yuhang Du Chenxi Song Yulin Wei Deli Ma Baocai Pan Mengyong Sun Guopu Shi Zhi Wang Qinggang Li Effect of CeO2-Y2O3 sintering aids on the microstructure and properties of corundum-based composite ceramics Journal of Asian Ceramic Societies Corundum-based composite ceramics sintering aids pressureless sintering mechanical properties microstructure |
| title | Effect of CeO2-Y2O3 sintering aids on the microstructure and properties of corundum-based composite ceramics |
| title_full | Effect of CeO2-Y2O3 sintering aids on the microstructure and properties of corundum-based composite ceramics |
| title_fullStr | Effect of CeO2-Y2O3 sintering aids on the microstructure and properties of corundum-based composite ceramics |
| title_full_unstemmed | Effect of CeO2-Y2O3 sintering aids on the microstructure and properties of corundum-based composite ceramics |
| title_short | Effect of CeO2-Y2O3 sintering aids on the microstructure and properties of corundum-based composite ceramics |
| title_sort | effect of ceo2 y2o3 sintering aids on the microstructure and properties of corundum based composite ceramics |
| topic | Corundum-based composite ceramics sintering aids pressureless sintering mechanical properties microstructure |
| url | https://www.tandfonline.com/doi/10.1080/21870764.2023.2264608 |
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