Abstract: Results obtained in a study of the process of synthesis of a polydisperse boron carbide powder (average particle size 2.10 µm) characterized by a broad particle size distribution are presented. The process in which a ceramic is produced from the thus synthesized boron carbide by hot compaction was also analyzed. In some cases, a sintering additive, highly dispersed chromium carbide powder (average particle size 7.13 µm), was used. The hot compaction was performed in argon at moderate parameters: pressure 35 MPa and temperature 1950°C. The porosity and water-absorption capacity of the samples obtained are very low and do not exceed 0.02%. The average values of the bending and compression strengths were 406 and 1553 MPa, respectively. A microhardness of about 42 GPa was reached in sintering of boron carbide. The microhardness in sintering of boron carbide with addition of chromium carbide was 45–46 GPa.

Cite: Krutskii Y.L. , Nepochatov Y.K. , Pel’ A.N. , Skovorodin I.N. , Dyukova K.D. , Krutskaya T.M. , Kuchumova I.D. , Mats O.E. , Tyurin A.G. , Emurlaeva Y.Y. , Podryabinkin S.I.
Synthesis of Polydisperse Boron Carbide and Synthesis of a Ceramic on Its Basis
Russian Journal of Applied Chemistry. 2019. V.92. N6. P.750-758. DOI: 10.1134/s1070427219060041 WOS Scopus РИНЦ OpenAlex

Identifiers:

Web of science:	WOS:000479143900004
Scopus:	2-s2.0-85070237807
Elibrary:	41372144
OpenAlex:	W2965714333

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Scopus	8
OpenAlex	7
Web of science	4

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