The results of studies of the effect of alumina nanofiber on the physical and mechanical characteristics of refractory concrete NPC-21AC are presented. It is shown that the use of nanofibers increases the flexural strength by 50 % and compressive strength by 30% with a 15% decrease in Young’s modulus. An increase in physical and mechanical characteristics leads to a 54 – 72% increase in thermal resistance, depending on the rate of heat transfer. The results of the study of the microstructure of the obtained material are presented.
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Transmission and scanning electron microscopy studies were performed using equipment of the Krasnoyarsk Regional Center for Collective Use of the Federal Research Center of the KSC SB RAS.
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Translated from Novye Ogneupory, No. 12, pp. 38 – 42, December 2020.
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Dobrosmyslov, S.S., Simunin, M.M., Voronin, A.S. et al. Investigation of the Effect of Nanoscale Alumina Fiber on the Heat Resistance of Refractory Concrete. Refract Ind Ceram 61, 704–708 (2021). https://doi.org/10.1007/s11148-021-00546-z
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DOI: https://doi.org/10.1007/s11148-021-00546-z