EFFECT OF MINERALIZING ADDITIVES ON THE SYNTHESIS OF CORUNDUM CERAMICS

UDC 666.3.017

  • Popov Rostislav Yurʼevich – PhD (Engineering), Assistant Professor, the Department of Glass and Ceramics Technology. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: rospopov@mail.ru

  • Pantsialeyenka Fedor Ivanovich – DSc (Engineering), Professor, the Department of Powder Metallurgy, Welding and Materials Technology, NAS Corresponding Member, Honoured Scientist of the Republic of Belarus. Belarusian National Technical University (24, build. 7, Ya. Kolasa str., 220013, Minsk, Republic of Belarus). E-mail: panteleenkofi@mail.ru

  • Shymanskaya Hanna Mikalaeuna – PhD (Engineering), assistant lecturer, the Department of Glass and Ceramics Technology. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: shimanskaya@belstu.by

  • Dyatlova Evgenia Mikhaylovna – PhD (Engineering), Assistant Professor, the Department of Glass and Ceramics Technology. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: dyatlova@belstu.by

  • Podbolotov Kirill Borisovich – PhD (Engineering), Leading Researcher, Assistant Professor. Physical-technical Institute of the National Academy of Sciences of Belarus (10, Akademika Kuprevicha str., 220141, Minsk, Republic of Belarus). E-mail: kirbor@tut.by

DOI: https://doi.org/10.52065/2520-2669-2021-247-2-72-79

Key words: corundum, mineralizing additive, phase composition, structure, mechanical strength.

For citation: Popov R. Yu., Pantsialeyenka F. I., Shymanskaya H. M., Dyatlova E. M., Podbolotov K. B. Effect of mineralizing additives on the synthesis of corundum ceramics. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2021, no. 2 (247), pp. 72–79 (In Russian). DOI: https://doi.org/10.52065/2520-2669-2021-247-2-72-79.

Abstract

The article presents the results of study of the various mineralizing additives effect on the sintering and phase formation of corundum ceramics. Periclase, titanium and zirconium dioxides, manganese (IV) oxide, dolomite, chalk have been used as mineralizing additives. In addition, a reinforcing component was additionally introduced into the experimental masses – waste of kaolin or carbon fibers. The complex effect of a combination of additives on the properties of corundum ceramics, its structure and phase composition has been studied. It has been established that the introduction of up to 2.5 wt. % MnO2 into ceramic masses, in the presence of an additive of 2.5 wt. % TiO2, promotes an increase in apparent density by 13–15%, bending strength by 18–20% and a decrease in water absorption to 0.9–1.0%, open porosity 1.5–2.0% compared to ceramics containing only one mineralizing additive of titanium dioxide. Additional introduction of the reinforcing component up to 2.5 wt. % (fiber) into the compositions of the experimental masses leads to an increase in the strength characteristics by another 10–12%. The structure and phase composition of the obtained ceramic material have been investigated.

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30.04.2021