Self-propagating high temperature synthesis of composite materials based on boron carbide
Keywords:
boron carbide, self-propagating high-temperature synthesis, mechanical activation, mineral raw materials.Abstract
The experimental results on obtaining composites based on the system was wide variation of the concentration ratios of the components in the initial mixtures and the products of SH-synthesis of mechanically activated systems. It is shown that the products of exothermic interaction are refractory compounds of boron carbide and magnesium oxide, which in the ceramic composite form a dispersed phase and a ceramic binder. The effect of the duration of the activated mixing on the morphology of the reaction mixture and the formation of the microstructure of the ceramic composite was studied. The possibility of obtaining boron carbide-B4C in the B2O3-Mg-MeO-C system is shown.The purpose of this study is to study the possibility of obtaining composite materials based boron carbide used on borate ore in the Inder deposit by the SHS method.The SHS products were examined by X-ray diffraction analysis and a scanning electron microscope.
References
(1). Tavadze G., Nadiradze A., Ukleba K. Thermodynamic probability of obtaining boron, carbide and boron nitride from potassium tetrafl uoboron and boron oxide at self-propagating high-temperature synthesis // Physical chemistry, Bulletin of the georgian national academy of sciences. 4 (2) 75-81 (2010).
(2). Shcherbakov V.A., Gryadunov A.N., Alymov M.I., Sachkova N.V. Combustion synthesis and consolidation B4C-TiB2 composites // Letters on materials. 6 (3) 217-220 (2016). https://doi.org/10.22226/2410-3535-2016-3-217-220
(3). Levashov E.A., Rogachev A.S., Kurbatkina V.V., Maxim Yu.M., Yukhvid II Promising materials and technologies of self-propagating high-temperature synthesis. M.: MISSIS, 377 (2011).
(4). Sychev A.E., Merzhanov A.G. Self-propagating high-temperature synthesis of nanomaterials. // Uspekhi Khimii. 73 (2) 157-170 (2004). https://doi.org/10.1070/RC2004v073n02ABEH000837
(5). Amosov A.P., Borovinskaya I.P., Merzhanov A.G. Powder technology of SHS-materials. Moscow: Mashinostroenie, 567 (2007).
(6). Levashov E.A., Rogachev A.S., Yukhvid V.I., Borovinskaya I.P. Physicochemical and technological foundations of self-propagating high-temperature synthesis. Moscow: Binom 176 (1999).
(7). Merzhanov A.G., Mukasyan A.S. Solid fl ame combustion. М.: TORUS PRESS, 336 (2007).
