The effect of silicon carbide (10 – 40 wt.%) on the physicomechanical and electrophysical characteristics of composites was considered. The effect of an additive on the radio absorption capacity of the material was determined by measuring the coefficients of absorption, transmission, and reflection of electromagnetic radiation as well as the dielectric constant of the material. It was found that introducing 30 wt.% silicon carbide into the composition increases the strength in compression to 2.4 MPa due to the reinforcing role of silicon carbide needle crystals. The additional dielectric losses and the average pore size of the composite on introduction of 30% silicon carbide afford an absorption coefficient of electromagnetic radiation from 95 to 98% in the frequency range 120 – 250 GHz. The results of this work expand the areas of application of porous glass composites as well as the raw material base for obtaining the material.
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This Russian Foundation for Basic Research funded this research as part of scientific project No. 19-33-90099.
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Translated from Steklo i Keramika, No. 4, pp. 9 – 15, April, 2021.
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Semenova, V.I., Kaz’mina, O.V., Dorozhkin, K.V. et al. Physical, Mechanical, and Electrophysical Properties of Porous Glass Composite with Silicon Carbide Additives. Glass Ceram 78, 140–144 (2021). https://doi.org/10.1007/s10717-021-00364-2
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DOI: https://doi.org/10.1007/s10717-021-00364-2