Self-Propagating High Temperature Synthesis in Mechanically Activated Mixtures of Boron Carbide and Titanium
M. A. Korchagin1,2, A. I. Gavrilov1, V. E. Zarko2,3, A. B. Kiskin3, Yu. V. Iordan4, V. I. Trushlyakov4
1Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630128 Russia
2Tomsk State University, Tomsk, 634050 Russia
3Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
4Omsk State Technical University, Omsk, 644050 Russia
Keywords: самораспространяющийся высокотемпературный синтез, механическая активация, взаимодействие карбида бора с титаном, self-propagating high-temperature synthesis, mechanical activation, reaction between boron carbide and titanium
Abstract
Self-propagating high temperature synthesis in both the layer-by-layer combustion mode and the dynamic thermal explosion mode was carried out using preliminary mechanical activation of B4C-Ti powder mixtures in a planetary ball mill. Preliminary mechanical activation modes of reaction mixtures were determined that provide a reduction in the reaction initiation temperature to 600±20 gr. The reaction products consist of mixtures of TiC and TiB2 with submicron grain size. The results of X-ray diffraction and electron microscopy studies of activated samples and reaction products are presented.
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