Effects of Al2O3 addition on the sintering behavior and microwave dielectric properties of CaSiO3 ceramics
The effects of Al2O3 addition on the densification, structure and microwave dielectric properties of CaSiO3 ceramics have been investigated. The Al2O3 addition results in the presence of two distinct phases, e.g. Ca2Al2SiO7 and CaAl2Si2O8, which can restrict the growth of CaSiO3 grains by surroundin...
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| Format: | Journal Article |
| Published: |
Elsevier Ltd
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/46018 |
| _version_ | 1848757444538269696 |
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| author | Wang, H. Chen, J. Yang, W. Feng, S. Ma, H. Jia, Guohua Xu, S. |
| author_facet | Wang, H. Chen, J. Yang, W. Feng, S. Ma, H. Jia, Guohua Xu, S. |
| author_sort | Wang, H. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The effects of Al2O3 addition on the densification, structure and microwave dielectric properties of CaSiO3 ceramics have been investigated. The Al2O3 addition results in the presence of two distinct phases, e.g. Ca2Al2SiO7 and CaAl2Si2O8, which can restrict the growth of CaSiO3 grains by surrounding their boundaries and also improve the bulk density of CaSiO3-Al2O3 ceramics. However, excessive addition (=2wt%) of Al2O3 undermines the microwave dielectric properties of the title ceramics since the derived phases of Ca2Al2SiO7 and CaAl2Si2O8 have poor quality factor. The optimum amount of Al2O3 addition is found to be 1wt%, and the derived CaSiO3-Al2O3 ceramic sintered at 1250°C presents improved microwave dielectric properties of e{open}r=6.66 and Q×f=24,626GHz, which is much better than those of pure CaSiO3 ceramic sintered at 1340°C (Q×f=13,109GHz). © 2011. |
| first_indexed | 2025-11-14T09:28:12Z |
| format | Journal Article |
| id | curtin-20.500.11937-46018 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:28:12Z |
| publishDate | 2012 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-460182017-09-13T15:04:46Z Effects of Al2O3 addition on the sintering behavior and microwave dielectric properties of CaSiO3 ceramics Wang, H. Chen, J. Yang, W. Feng, S. Ma, H. Jia, Guohua Xu, S. The effects of Al2O3 addition on the densification, structure and microwave dielectric properties of CaSiO3 ceramics have been investigated. The Al2O3 addition results in the presence of two distinct phases, e.g. Ca2Al2SiO7 and CaAl2Si2O8, which can restrict the growth of CaSiO3 grains by surrounding their boundaries and also improve the bulk density of CaSiO3-Al2O3 ceramics. However, excessive addition (=2wt%) of Al2O3 undermines the microwave dielectric properties of the title ceramics since the derived phases of Ca2Al2SiO7 and CaAl2Si2O8 have poor quality factor. The optimum amount of Al2O3 addition is found to be 1wt%, and the derived CaSiO3-Al2O3 ceramic sintered at 1250°C presents improved microwave dielectric properties of e{open}r=6.66 and Q×f=24,626GHz, which is much better than those of pure CaSiO3 ceramic sintered at 1340°C (Q×f=13,109GHz). © 2011. 2012 Journal Article http://hdl.handle.net/20.500.11937/46018 10.1016/j.jeurceramsoc.2011.09.014 Elsevier Ltd restricted |
| spellingShingle | Wang, H. Chen, J. Yang, W. Feng, S. Ma, H. Jia, Guohua Xu, S. Effects of Al2O3 addition on the sintering behavior and microwave dielectric properties of CaSiO3 ceramics |
| title | Effects of Al2O3 addition on the sintering behavior and microwave dielectric properties of CaSiO3 ceramics |
| title_full | Effects of Al2O3 addition on the sintering behavior and microwave dielectric properties of CaSiO3 ceramics |
| title_fullStr | Effects of Al2O3 addition on the sintering behavior and microwave dielectric properties of CaSiO3 ceramics |
| title_full_unstemmed | Effects of Al2O3 addition on the sintering behavior and microwave dielectric properties of CaSiO3 ceramics |
| title_short | Effects of Al2O3 addition on the sintering behavior and microwave dielectric properties of CaSiO3 ceramics |
| title_sort | effects of al2o3 addition on the sintering behavior and microwave dielectric properties of casio3 ceramics |
| url | http://hdl.handle.net/20.500.11937/46018 |