Nucleation and crystallization of tailing-based glass-ceramics by microwave heating

The effect of microwave radiation on the nucleation and crystallization of tailing-based glass-ceramics was investigated using a 2.45 GHz multimode microwave cavity. Tailing-based glass samples were prepared fi＇om Shandong gold tailings and Guyang iron tailings utilizing a conventional glass melting...

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Bibliographic Details
Published in:International journal of minerals, metallurgy and materials metallurgy and materials, 2015-12, Vol.22 (12), p.1342-1349
Main Authors: Li, Bao-wei, Li, Hong-xia, Zhang, Xue-feng, Jia, Xiao-lin, Sun, Zhi-chao
Format: Article
Language:English
Subjects:
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Corrosion and Coatings
Crystallization
Differential thermal analysis
Fourier transforms
Glass
Glass ceramics
Heat treatment
Heating
Infrared spectroscopy
Materials Science
Metallic Materials
Microwave heating
Microwave radiation
Microwaves
Mine tailings
Natural Materials
Nucleation
Raman spectroscopy
Spectrum analysis
Surfaces and Interfaces
Tailings
Thermal analysis
Thermal expansion
Thin Films
Tribology
X-ray diffraction
X射线衍射仪
傅里叶变换红外光谱
尾矿微晶玻璃
微波加热
扫描电子显微镜
晶化过程
核化
结晶温度
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Summary:The effect of microwave radiation on the nucleation and crystallization of tailing-based glass-ceramics was investigated using a 2.45 GHz multimode microwave cavity. Tailing-based glass samples were prepared fi＇om Shandong gold tailings and Guyang iron tailings utilizing a conventional glass melting technique. For comparison, the tailing-based glass samples were crystallized using two different heat-treatment methods： conventional heating and hybrid microwave heating. The nucleation and crystallization temperatures were determined by performing a differential thermal analysis of the quenched tailing-based glass. The prepared glass-ceramic samples were further characterized by Fourier transform infrared spectroscopy, X-ray diffraction, Raman spectroscopy, thermal expansion coefficient measurements, and scanning electron microscopy. The results demonstrated that hybrid microwave heating could be successfully used to crystallize the tailing-based glass, reduce the processing time, and decrease the crystallization temperature. Furthermore, the results indicated that the nucleation and crystallization mechanism of the hybrid microwave heating process slightly differs fi＇om that of the conventional heating process.
ISSN:1674-4799
1869-103X
DOI:10.1007/s12613-015-1203-y