Spark Plasma Sintering of SiC Ceramics Based on Natural Renewable Raw Materials

Abstract:

The paper presents the results of obtaining silicon carbide SiC ceramic from organic raw materials by the reaction spark plasma sintering (SPS). Annealed rice husks are used as an organic raw material. A feature of the batch preparation for sintering is annealing in an inert atmosphere. Thus, the carbon source C for further reaction with silicon dioxide SiO2 to form SiC is the organic part of the rice husk. This way let to achieve the most uniform reacting components mixing directly at the stage of annealing the husks and to exclude the mixing stage from the technological process. The reaction SPS method was used for the first time for the production of ceramic material from such a raw material. The results of a comprehensive study of the obtained material by various methods are presented in the article: scanning electron microscopy, Raman spectroscopy, X-ray phase analysis, strength analysis, and others.

• Periodical: Materials Science Forum (Volume 992)
• Pages: 759-763
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.992.759
• Online since: May 2020
• Authors: A. Zavjalov*, Nikolai Shapkin, Evgenii K. Papynov
• Keywords: Reaction Sintering, Rice Husk Processing, SiC, Silicon Carbide, Spark Plasma Sintering, SPS, Ultra-High Temperature Ceramics (UHTC)

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