| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| The Impact of Cr2O3 on Electrical Properties and Mechanical Properties of Tailing Fluorphlogopite Glass-ceramic |
| ZHANG Xuefeng1,2, CUI Zebo1, JIA Xiaolin2, LIU Fang2
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1 Inner Monglia University of Science and Technology, Baotou 014010
2 Engineering Center of Inner Monglia University of Science and Technology, Baotou 014010 |
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Abstract Tailing fluorphlogopite (KMg3(Si3AlO10)F2) glass-ceramics were prepared by traditional melting method with gold tailing as main raw mate-rial. The microstructure, electrical properties and mechanical properties of the as-prepared glass-ceramics were investigated by DSC, XRD and SEM. The results revealed that the fuorophlogopite glass-ceramics with main crystalline phase of KMg3(Si3AlO10)F2 were prepared after nucleation at 650 ℃ for 2 h and crystallization at 860 ℃ for 3 h. With the increment of Cr2O3 content, the degree of crystal interlacing in the glass-ceramics improved and the aspect ratio reached 73. The tailings fluorophlogopite glass-ceramics exhibited the volume resistivity of 1012 Ω·m and 106 Ω·m at room temperature and at 600℃, respectively. Under the condition of room temperature and 100 kHz, the dielectric constant of tai-lings fluorophlogopite glass-ceramics varied in the range of 8.79—9.64 and the dielectric loss was 10-3. With the increment of Cr2O3 content, the hardness of the glass-ceramics dropped gradually and then maintained stable, while the mechanical properties of the glass-ceramics strengthened at first and then stayed almost unchanged. The mechanical properties calculated on the basis of hardness was more than 0.032.
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Published: 03 April 2019
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| Fund:This work was financially supported by the Science and Technology Innovation Guidance Project of Inner Mongolia Autonomous Region (2017CXYD-4). |
| About author:: Xuefeng Zhang works for Inner Mongolia University of Science and Technology,doctoral supervisor,professor.Her research interests are solid waste recycling,Glass-ceramic,magnetic material.Zebo Cuireceived his MSc degree in June 2018 from Inner Mongolia University of Science and Technology. |
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2019, Vol. 33 
