Investigating the effect of CaO/MgO ratio on the structure and final properties of wall tile bodies in rapid firing using Zanjan talc and Abbas Abad calcium carbonate as primary sources
Abstract Introduction: In this research, the simultaneous effect of CaO and MgO as the main oxides that activate the reactions during rapid firing of ceramic tiles on the path of transformations and the formation of the beneficial phase of Anorthite and the reduction of the harmful phase of Gehlenit...
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Marvdasht Branch, Islamic Azad University
2022-10-01
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| Series: | مواد نوین |
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| Online Access: | https://jnm.marvdasht.iau.ir/article_6011_ca8cd7d924d1db5ec2d241b8c151630a.pdf |
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| author | Gholamreza Khalaj Abolhassan Najafi Amir Hossein Mahmoud Hosseiny |
| author_facet | Gholamreza Khalaj Abolhassan Najafi Amir Hossein Mahmoud Hosseiny |
| author_sort | Gholamreza Khalaj |
| collection | DOAJ |
| description | Abstract
Introduction: In this research, the simultaneous effect of CaO and MgO as the main oxides that activate the reactions during rapid firing of ceramic tiles on the path of transformations and the formation of the beneficial phase of Anorthite and the reduction of the harmful phase of Gehlenite was studied.
Methods: Calcium carbonate was chosen as a source of CaO oxide and talc powder as a source of MgO. After forming with a press, the mixtures were heat treated and the bodies were sintered. XRD, Dilatometery and SEM/FESEM analysis methods were used to evaluate the mechanism of product formation. The phases of the manufactured bodies were identified by X-ray diffraction test. The weight percentage of constituent phases was calculated through Maud software.
Findings: Investigations showed that with decreasing CaO/MgO ratio, the weight percentage of Anorthite phase increased. Similarly, with the decrease of CaO/MgO ratio, the coefficient of thermal expansion decreased. So that the lowest coefficient of thermal expansion (7.75 x 10-6 units per degree Celsius) was reported. Microstructural investigations showed that by fine-granulating the primary sources of calcium carbonate and talc, the harmful Gehlenite phase was removed from the final microstructure and the Anorthite phase increased (up to 10% by weight). Likewise, the crystals of Anorthite phase have grown more. |
| first_indexed | 2024-03-08T15:47:23Z |
| format | Article |
| id | doaj.art-04f80abdcc8f42638eeb30031ca29a52 |
| institution | Directory Open Access Journal |
| issn | 2228-5946 2423-7183 |
| language | fas |
| last_indexed | 2024-03-08T15:47:23Z |
| publishDate | 2022-10-01 |
| publisher | Marvdasht Branch, Islamic Azad University |
| record_format | Article |
| series | مواد نوین |
| spelling | doaj.art-04f80abdcc8f42638eeb30031ca29a522024-01-09T09:27:12ZfasMarvdasht Branch, Islamic Azad Universityمواد نوین2228-59462423-71832022-10-011349274010.30495/jnm.2023.31925.19976011Investigating the effect of CaO/MgO ratio on the structure and final properties of wall tile bodies in rapid firing using Zanjan talc and Abbas Abad calcium carbonate as primary sourcesGholamreza Khalaj0Abolhassan Najafi1Amir Hossein Mahmoud Hosseiny2Department of Materials Engineering, College of Technology and Engineering, Saveh Branch, Islamic Azad University, Saveh, IranDepartment of Materials Engineering, College of Technology and Engineering, Saveh Branch, Islamic Azad University, Saveh, IranDepartment of Materials Science and Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, IranAbstract Introduction: In this research, the simultaneous effect of CaO and MgO as the main oxides that activate the reactions during rapid firing of ceramic tiles on the path of transformations and the formation of the beneficial phase of Anorthite and the reduction of the harmful phase of Gehlenite was studied. Methods: Calcium carbonate was chosen as a source of CaO oxide and talc powder as a source of MgO. After forming with a press, the mixtures were heat treated and the bodies were sintered. XRD, Dilatometery and SEM/FESEM analysis methods were used to evaluate the mechanism of product formation. The phases of the manufactured bodies were identified by X-ray diffraction test. The weight percentage of constituent phases was calculated through Maud software. Findings: Investigations showed that with decreasing CaO/MgO ratio, the weight percentage of Anorthite phase increased. Similarly, with the decrease of CaO/MgO ratio, the coefficient of thermal expansion decreased. So that the lowest coefficient of thermal expansion (7.75 x 10-6 units per degree Celsius) was reported. Microstructural investigations showed that by fine-granulating the primary sources of calcium carbonate and talc, the harmful Gehlenite phase was removed from the final microstructure and the Anorthite phase increased (up to 10% by weight). Likewise, the crystals of Anorthite phase have grown more.https://jnm.marvdasht.iau.ir/article_6011_ca8cd7d924d1db5ec2d241b8c151630a.pdfwall tilesdilatometrywater absorptionthermal expansionfiring shrinkageflexural strength |
| spellingShingle | Gholamreza Khalaj Abolhassan Najafi Amir Hossein Mahmoud Hosseiny Investigating the effect of CaO/MgO ratio on the structure and final properties of wall tile bodies in rapid firing using Zanjan talc and Abbas Abad calcium carbonate as primary sources مواد نوین wall tiles dilatometry water absorption thermal expansion firing shrinkage flexural strength |
| title | Investigating the effect of CaO/MgO ratio on the structure and final properties of wall tile bodies in rapid firing using Zanjan talc and Abbas Abad calcium carbonate as primary sources |
| title_full | Investigating the effect of CaO/MgO ratio on the structure and final properties of wall tile bodies in rapid firing using Zanjan talc and Abbas Abad calcium carbonate as primary sources |
| title_fullStr | Investigating the effect of CaO/MgO ratio on the structure and final properties of wall tile bodies in rapid firing using Zanjan talc and Abbas Abad calcium carbonate as primary sources |
| title_full_unstemmed | Investigating the effect of CaO/MgO ratio on the structure and final properties of wall tile bodies in rapid firing using Zanjan talc and Abbas Abad calcium carbonate as primary sources |
| title_short | Investigating the effect of CaO/MgO ratio on the structure and final properties of wall tile bodies in rapid firing using Zanjan talc and Abbas Abad calcium carbonate as primary sources |
| title_sort | investigating the effect of cao mgo ratio on the structure and final properties of wall tile bodies in rapid firing using zanjan talc and abbas abad calcium carbonate as primary sources |
| topic | wall tiles dilatometry water absorption thermal expansion firing shrinkage flexural strength |
| url | https://jnm.marvdasht.iau.ir/article_6011_ca8cd7d924d1db5ec2d241b8c151630a.pdf |
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