Magnesium thermal SHS of silicon carbide using carbon fibers as a carbon source

Abstract

Studies on the production of silicon carbide by self-propagating high-temperature synthesis (SHS) have been carried out. To provide the necessary energy for the process, the synthesis was carried out by magnesium-thermal reduction of silicon dioxide in an argon atmosphere. A special feature of this study is the use of carbon fibers as a carbon source. It has been determined that during magnesium-thermal synthesis, hexagonal particles with a size of 1‒2 µm and a thickness of about 0,2‒0,3 µm are mainly formed. X-ray phase analysis showed the predominant formation of silicon carbide cubic syngony.