Synthesis of MgSiO3 ceramics using natural desert sand as SiO2 source |
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| Affiliation: | 1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;2. School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore;3. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 637371, Singapore;4. Medical Institute Department, Sichuan College of Traditional Chinese Medicine, Mianyang 621000, China;1. Department of Physics, Faculty of Mathematics and Sciences, Institute of Technology Sepuluh Nopember, Jl. Arief Rahman Hakim, Surabaya 60111, Indonesia;2. Department of Physics, Faculty of Mathematics and Sciences, Semarang State University, Jl. Raya Sekaran Gunung Pati, Semarang 50221, Indonesia;1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming, 650093, Yunnan, PR China;2. Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan, PR China;1. Servicio de Cardiología, Hospital Universitario de Cabueñes, Gijón, Asturias, España;2. Servicio de Cardiología, Hospital Universitario Central de Asturias, Oviedo, Asturias, España;3. Servicio de Cirugía Cardiaca, Hospital Universitario Central de Asturias, Oviedo, Asturias, España;1. Nanotechnology Centre, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, CZ-708 33 Ostrava-Poruba, Czech Republic;2. IT4Innovations Centre of Excellence, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, CZ-708 33 Ostrava-Poruba, Czech Republic;3. VŠB-Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, 17. listopadu 15/2172, CZ-708 33 Ostrava-Poruba, Czech Republic;4. Department of Thermal Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, CZ-708 33 Ostrava-Poruba, Czech Republic;5. Department of Analytical Chemistry and Material Testing, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, CZ-708 33 Ostrava-Poruba, Czech Republic |
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| Abstract: | High-quality inorganic minerals are being increasingly consumed in the fabrication of ceramics. In the present work, desert sand was adopted as the source of SiO2 to synthesize MgSiO3 and MgSiO3 SiC composite ceramics in an endeavor to economize on mineral resources and improve the desert ecosystem through the industrial application of desert sand. Experimental results show that the use of drift sand enabled the formation of glass phase at lower temperatures, which promoted protoenstatite transformation, prevented sintering cracking, and densified the ceramic bodies. The composites consisted of MgSiO3 (protoenstatite), SiC, glass phase, and small amounts of forsterite and SiO2. The addition of SiC particles caused the green bodies to resist densification, but this was improved by increasing the sintering temperature. The composite ceramic containing 30 wt % of SiC and sintered at 1350 °C had the highest bending strength, whereas that containing 50 wt% of SiC and sintered at 1400 °C had the highest hardness and the lowest coefficient of thermal expansion among all the samples. |
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| Keywords: | Desert sand Ceramic Composite Synthesis Sintering |
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