What question did this study set out to answer?

Determine the thermodynamic phase equilibria and gas phase compositions for carbothermal synthesis of 3C-SiC(β) powders across variable temperatures and component ratios.

January 1, 2019Bulletin of the South Ural State University series ChemistryOpen Access

The Thermodynamic Modeling of the Phases Quantitative Relations in the Process of the Carbothermic β-SiС Synthesis

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Determine the thermodynamic phase equilibria and gas phase compositions for carbothermal synthesis of 3C-SiC(β) powders across variable temperatures and component ratios.
Simulated thermodynamic phase equilibria within the Si–O–C system along the C–SiO2 section across 1400–1900 °C.
Evaluated the quantitative relations of gas mixtures, liquid silicon, solid carbon, and silicon oxide under varying carbon-to-silicon oxide ratios.
Gaseous interaction products form only at temperatures above 1514 °C, with carbon monoxide emerging as the dominant reaction gas alongside minor silicon monoxide and carbon dioxide.
An abrupt reduction in impurity gas content occurs when the reactant ratio satisfies C/(SiO2 + C) ≥ 0.37, enabling the formation of a self-sustaining protective atmosphere.

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Implication

Thermodynamic modeling study uncovers phase equilibria in the silicon-oxygen-carbon system, suggesting an energy-efficient path to synthesize beta-silicon carbide without external protective gas.

Cite This Study

Лебедев et al. (2019) studied this question.

synapsesocial.com/papers/6aa59d2aed5b30ca2d8e3060 https://doi.org/10.14529/chem190409

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Implication

Thermodynamic modeling study uncovers phase equilibria in the silicon-oxygen-carbon system, suggesting an energy-efficient path to synthesize beta-silicon carbide without external protective gas.

The Thermodynamic Modeling of the Phases Quantitative Relations in the Process of the Carbothermic β-SiС Synthesis

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Discussion

Implication

Cite This Study

The Thermodynamic Modeling of the Phases Quantitative Relations in the Process of the Carbothermic β-SiС Synthesis

Key Points

Discussion

Implication

Cite This Study

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