Preparation, Microstructure, and Mechanical Properties of Spinel-Corundum-Sialon Composite Materials from Waste Fly Ash and Aluminum Dross
The solid wastes fly ash and aluminum dross were used to prepare the low cost, high added-value product spinel-corundum-Sialon with an in situ aluminothermic reduction-nitridation reaction. The effects of varying raw material components and heating temperatures on the phase compositions, microstruct...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2014/789867 |
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| author | Juntong Huang Minghao Fang Zhaohui Huang Yan’gai Liu Jingzhou Yang Saifang Huang Youguo Xu Kai Chen Shuai Yi Shaowei Zhang |
| author_facet | Juntong Huang Minghao Fang Zhaohui Huang Yan’gai Liu Jingzhou Yang Saifang Huang Youguo Xu Kai Chen Shuai Yi Shaowei Zhang |
| author_sort | Juntong Huang |
| collection | DOAJ |
| description | The solid wastes fly ash and aluminum dross were used to prepare the low cost, high added-value product spinel-corundum-Sialon with an in situ aluminothermic reduction-nitridation reaction. The effects of varying raw material components and heating temperatures on the phase compositions, microstructure, bulk density, apparent porosity, and bending strength of products were investigated. The presence of hazardous or impure elements in the products was also evaluated. The sintered materials mainly consisted of micro-/nanosized plate corundum, octahedral spinel, and hexagonal columnar β-Sialon. The bulk density and bending strength of product samples initially increased and then decreased as Al content increased. Product samples with an Al content exceeding 10 mass% that were sintered at 1450°C exhibited the highest bending strength (288 MPa), the lowest apparent porosity (1.24%), and extremely low linear shrinkage (0.67%). The main impurity present was Fe5Si3 with hazardous elements P, Cr, Mn, and Ni doping. This work could provide a new method to reduce environmental pollution and manufacture low cost high performance refractory materials using the abundant waste materials fly ash and aluminum dross. |
| format | Article |
| id | doaj-art-acc562c7991644c986ad1fd65073cced |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-acc562c7991644c986ad1fd65073cced2025-02-03T05:47:41ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422014-01-01201410.1155/2014/789867789867Preparation, Microstructure, and Mechanical Properties of Spinel-Corundum-Sialon Composite Materials from Waste Fly Ash and Aluminum DrossJuntong Huang0Minghao Fang1Zhaohui Huang2Yan’gai Liu3Jingzhou Yang4Saifang Huang5Youguo Xu6Kai Chen7Shuai Yi8Shaowei Zhang9School of Materials Science and Technology, China University of Geosciences, Beijing 100083, ChinaSchool of Materials Science and Technology, China University of Geosciences, Beijing 100083, ChinaSchool of Materials Science and Technology, China University of Geosciences, Beijing 100083, ChinaSchool of Materials Science and Technology, China University of Geosciences, Beijing 100083, ChinaSchool of Materials Science and Technology, China University of Geosciences, Beijing 100083, ChinaSchool of Materials Science and Technology, China University of Geosciences, Beijing 100083, ChinaSchool of Materials Science and Technology, China University of Geosciences, Beijing 100083, ChinaSchool of Materials Science and Technology, China University of Geosciences, Beijing 100083, ChinaSchool of Materials Science and Technology, China University of Geosciences, Beijing 100083, ChinaCollege of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UKThe solid wastes fly ash and aluminum dross were used to prepare the low cost, high added-value product spinel-corundum-Sialon with an in situ aluminothermic reduction-nitridation reaction. The effects of varying raw material components and heating temperatures on the phase compositions, microstructure, bulk density, apparent porosity, and bending strength of products were investigated. The presence of hazardous or impure elements in the products was also evaluated. The sintered materials mainly consisted of micro-/nanosized plate corundum, octahedral spinel, and hexagonal columnar β-Sialon. The bulk density and bending strength of product samples initially increased and then decreased as Al content increased. Product samples with an Al content exceeding 10 mass% that were sintered at 1450°C exhibited the highest bending strength (288 MPa), the lowest apparent porosity (1.24%), and extremely low linear shrinkage (0.67%). The main impurity present was Fe5Si3 with hazardous elements P, Cr, Mn, and Ni doping. This work could provide a new method to reduce environmental pollution and manufacture low cost high performance refractory materials using the abundant waste materials fly ash and aluminum dross.http://dx.doi.org/10.1155/2014/789867 |
| spellingShingle | Juntong Huang Minghao Fang Zhaohui Huang Yan’gai Liu Jingzhou Yang Saifang Huang Youguo Xu Kai Chen Shuai Yi Shaowei Zhang Preparation, Microstructure, and Mechanical Properties of Spinel-Corundum-Sialon Composite Materials from Waste Fly Ash and Aluminum Dross Advances in Materials Science and Engineering |
| title | Preparation, Microstructure, and Mechanical Properties of Spinel-Corundum-Sialon Composite Materials from Waste Fly Ash and Aluminum Dross |
| title_full | Preparation, Microstructure, and Mechanical Properties of Spinel-Corundum-Sialon Composite Materials from Waste Fly Ash and Aluminum Dross |
| title_fullStr | Preparation, Microstructure, and Mechanical Properties of Spinel-Corundum-Sialon Composite Materials from Waste Fly Ash and Aluminum Dross |
| title_full_unstemmed | Preparation, Microstructure, and Mechanical Properties of Spinel-Corundum-Sialon Composite Materials from Waste Fly Ash and Aluminum Dross |
| title_short | Preparation, Microstructure, and Mechanical Properties of Spinel-Corundum-Sialon Composite Materials from Waste Fly Ash and Aluminum Dross |
| title_sort | preparation microstructure and mechanical properties of spinel corundum sialon composite materials from waste fly ash and aluminum dross |
| url | http://dx.doi.org/10.1155/2014/789867 |
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