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Home / Science of Advanced Materials, Volume 13, Number 4

Effect of C:SiO2 Ratio on Heating Behavior and Photoluminescence Property of SiC by Microwave

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Coal minerals and tetraethoxysilane were used to prepare SiC by microwave heating. Different C:SiO2 ratios of raw mixed powders were selected to investigate changes in the heating behavior and photoluminescence property. The prepared samples were characterized by X-ray diffraction (XRD) Raman Field-emission scanning electron microscopy (SEM) and X-ray fluorescence spectrophotometer. It was found that distinct heating behavior appeared for different C:SiO2 ratios, including the time taken to reach ~600 °C, performance of the thermal runaway, and heating rate. The changes in the complicated heating behaviors are determined by different microwave coupling, microwave plasma, and E-field intensification effects within samples with different C:SiO2 ratios. When the molar ration of carbon and silicon is 5:1, the intensity of light emission reaches maximum.

Keywords: Coupling Effect; Heating Behavior; Microwave Heating; Microwave Plasma Effect; Photoluminescence; SiC

Document Type: Research Article

Affiliations: 1: School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China 2: Henan Key Laboratory of Aeronautical Material and Application Technology, Zhengzhou University of Aeronautics, Zhengzhou 450005, China

Publication date: 01 April 2021

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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