Development of dense Sr-substituted CaAl12O19 (CA6) ceramics synthesized by sol-gel combustion method
The most alumina-rich compound in the CaO-Al2O3 system is calcium hexaaluminate (CaAl12O19, CA6). CA6 ceramics were synthesized by the sol-gel auto combustion method. CA6 phase formation has been achieved at 1200°C, which is a much lower temperature than the convention process (>1600°C). The infl...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2021-07-01
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| Series: | Journal of Asian Ceramic Societies |
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| Online Access: | http://dx.doi.org/10.1080/21870764.2021.1932083 |
| _version_ | 1818581933473398784 |
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| author | Sk S. Hossain Preeti Jani P. K. Roy Japes Bera |
| author_facet | Sk S. Hossain Preeti Jani P. K. Roy Japes Bera |
| author_sort | Sk S. Hossain |
| collection | DOAJ |
| description | The most alumina-rich compound in the CaO-Al2O3 system is calcium hexaaluminate (CaAl12O19, CA6). CA6 ceramics were synthesized by the sol-gel auto combustion method. CA6 phase formation has been achieved at 1200°C, which is a much lower temperature than the convention process (>1600°C). The influence of Sr2+ substitution on the densification of Ca1-xSrxAl12O19 (x = 0, 0.1, 0.2, and 0.3) ceramics was investigated. The X-ray diffraction analysis and structural refinement indicated the substitution of Sr2+ ions into the lattice of CA6. The elongation of the “c” direction of the CA6 crystal structure was found with Sr2+ ion substitution. Surface morphology analysis showed a crystal growth with Sr2+ substitution in CA6 upto x = 0.2 composition. The 1600°C sintered specimen (with x = 0.2 composition) showed the bulk density and open porosity of 3.39 g/cm3 and 4.92%, respectively. Thus, auto combustion synthesis and Sr2+ substitution into CA6 ceramics are feasible and beneficial for the densification of the ceramics. |
| first_indexed | 2024-12-16T07:41:22Z |
| format | Article |
| id | doaj.art-19be6652051c402d8c8a1aec6b81c0ca |
| institution | Directory Open Access Journal |
| issn | 2187-0764 |
| language | English |
| last_indexed | 2024-12-16T07:41:22Z |
| publishDate | 2021-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Ceramic Societies |
| spelling | doaj.art-19be6652051c402d8c8a1aec6b81c0ca2022-12-21T22:39:04ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642021-07-01931007101410.1080/21870764.2021.19320831932083Development of dense Sr-substituted CaAl12O19 (CA6) ceramics synthesized by sol-gel combustion methodSk S. Hossain0Preeti Jani1P. K. Roy2Japes Bera3IIT (BHU)NITIIT (BHU)NITThe most alumina-rich compound in the CaO-Al2O3 system is calcium hexaaluminate (CaAl12O19, CA6). CA6 ceramics were synthesized by the sol-gel auto combustion method. CA6 phase formation has been achieved at 1200°C, which is a much lower temperature than the convention process (>1600°C). The influence of Sr2+ substitution on the densification of Ca1-xSrxAl12O19 (x = 0, 0.1, 0.2, and 0.3) ceramics was investigated. The X-ray diffraction analysis and structural refinement indicated the substitution of Sr2+ ions into the lattice of CA6. The elongation of the “c” direction of the CA6 crystal structure was found with Sr2+ ion substitution. Surface morphology analysis showed a crystal growth with Sr2+ substitution in CA6 upto x = 0.2 composition. The 1600°C sintered specimen (with x = 0.2 composition) showed the bulk density and open porosity of 3.39 g/cm3 and 4.92%, respectively. Thus, auto combustion synthesis and Sr2+ substitution into CA6 ceramics are feasible and beneficial for the densification of the ceramics.http://dx.doi.org/10.1080/21870764.2021.1932083ca6 ceramicssol-gel auto combustionsr2+ substitutiondensitymicrostructure |
| spellingShingle | Sk S. Hossain Preeti Jani P. K. Roy Japes Bera Development of dense Sr-substituted CaAl12O19 (CA6) ceramics synthesized by sol-gel combustion method Journal of Asian Ceramic Societies ca6 ceramics sol-gel auto combustion sr2+ substitution density microstructure |
| title | Development of dense Sr-substituted CaAl12O19 (CA6) ceramics synthesized by sol-gel combustion method |
| title_full | Development of dense Sr-substituted CaAl12O19 (CA6) ceramics synthesized by sol-gel combustion method |
| title_fullStr | Development of dense Sr-substituted CaAl12O19 (CA6) ceramics synthesized by sol-gel combustion method |
| title_full_unstemmed | Development of dense Sr-substituted CaAl12O19 (CA6) ceramics synthesized by sol-gel combustion method |
| title_short | Development of dense Sr-substituted CaAl12O19 (CA6) ceramics synthesized by sol-gel combustion method |
| title_sort | development of dense sr substituted caal12o19 ca6 ceramics synthesized by sol gel combustion method |
| topic | ca6 ceramics sol-gel auto combustion sr2+ substitution density microstructure |
| url | http://dx.doi.org/10.1080/21870764.2021.1932083 |
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