The study of technologies to improve physical-mechanical and chemical properties of reaction sintered ceramic materials on the basis of silicon carbide
Journal Title: Вісник Тернопільського національного технічного університету - Year 2017, Vol 86, Issue 2
Abstract
The ways of improving physical-mechanical and chemical properties of reaction-sintered ceramic materials based on silicon carbide are described. Various means of processing ceramic materials are studied and analysed. The technologies of obtaining the resulting components, removing free silicon from products, and binding impurities in the surface layers are improved. It is found that the increase of operating temperatures and the use of ceramic materials based on silicon carbide in demanding conditions can be achieved by introducing additives into the mix, strengthening the dispersed particles and applying a protective coating. The synthesis and crystallization of secondary silicon carbide on the grains of primary silicon carbide, and dissolution and recrystallization of submicron particles of primary silicon carbide occur at high temperatures and in the presence of molten silicon. Based on the published data analysis and conducted research, the complex of measures for improving physical-mechanical and chemical properties of reaction sintered ceramic materials based on silicon carbide is proposed.
Authors and Affiliations
Vasyl Kovbashyn, Ihor Bochar
Keywords
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