Modeling the Temperature Field in a High-Pressure Apparatus during the Sintering of Large-Sized Products Based on Boron Carbide

• Published in: Journal of superhard materials Vol. 42; no. 4; pp. 240 - 250
• Main Authors: Dutka, V. A., Maystrenko, A. L., Borymskyi, O. I., Kulich, V. G., Kosenchuk, T. O.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.07.2020; Springer Nature B.V
• Subjects: Boron carbide; Chemistry; Chemistry and Materials Science; Finite element method; Physical Chemistry; Porosity; Production; Properties; Sintering; Sintering (powder metallurgy); Structure; Temperature distribution; Thermophysical properties; computer-aided modeling; sintering; high pressure; boron carbide; temperature field
• ISSN: 1063-4576; 1934-9408
• DOI: 10.3103/S1063457620040048

A computer model is developed on the basis of the finite-element method for the temperature field formed during the sintering of large-size boron carbide products in the working cell of a high-pressure apparatus at a pressure of 0.5–1.0 GPa and temperatures of 1700–1750°C. The dependence of the thermophysical properties of a sample on the porosity and temperature in the process of sintering is taken into account. It is shown that the selection of geometric parameters for the constructional elements of the working cell of a high-pressure apparatus makes it possible to find such a cell structure, whose application may provide a nearly uniform temperature field in a large-size sample under sintering and uniformity of the density and physicomechanical properties of the sintered sample.