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Silicon carbide formation by carbothermal reduction in the Acheson process: A hot model study

Raj, P and Gupta, GS and Rudolph, V (2020) Silicon carbide formation by carbothermal reduction in the Acheson process: A hot model study. In: Thermochimica Acta, 687 .

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Official URL: https://dx.doi.org/10.1016/j.tca.2020.178577


A hot model study was done to investigate the progress of SiC formation via carbothermal route in the Acheson process. Experiments were carried out in a parametrically controlled medium-scale resistance furnace with the raw materials (silica and carbon) in the stoichiometric ratio. The morphological analysis of the formed product at different radial and angular locations was carried out by XRD and SEM. Whereas, the chemical analysis was used to analyze the sample quantitively which gave a radial and angular map of the amount of SiC formation. The temperature measurement at various locations indicates that it has a significant influence on SiC formation. Whereas, the stoichiometric disorder in the product showed the loss of carbon in the process and silica impurity in the formed SiC. The Porosity measurement shows strong variation from the center to the periphery. The results of this study would be beneficial for the current mass production of SiC. © 2020 Elsevier B.V.

Item Type: Journal Article
Publication: Thermochimica Acta
Publisher: Elsevier Ltd
Additional Information: The copyright of this article belongs to Elsevier Ltd
Keywords: Carbon; Chemical analysis; Porosity; Silica; Silicon carbide; Temperature measurement, Angular locations; Carbide formation; Carbothermal routes; Core temperature; Morphological analysis; Porosity measurement; Resistance furnaces; Stoichiometric ratio, Carbothermal reduction
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 26 Jun 2020 08:35
Last Modified: 26 Jun 2020 08:35
URI: http://eprints.iisc.ac.in/id/eprint/64855

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