MECHANOCOMPOSITES FOR POLYMER MATERIALS OF RADIATION PROTECTION
T. F. GRIGOREVA1, S. A. KOVALEVA2, T. YU. KISELEVA3, T. A. UDALOVA4,1, S. V. VOSMERIKOV1, E. T. DEVYATKINA1, P. A. VITYAZ2, N. Z. LYAKHOV1
1Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
2Joint Institute of Mechanical Engineering, Belarusian National Academy of Sciences, Minsk, Belarus
3Moscow M. V. Lomonosov State University, Faculty of Physics, Moscow, Russia
4Novosibirsk State Technical University, Novosibirsk, Russia
Keywords: механическая активация, композиты, железо, вольфрам, карбид бора, диборид титана, mechanochemical synthesis, composites, iron, tungsten, boron carbide, titanium diboride
Pages: 267-271
Abstract
Mechanochemical formation of composites Fe/TiB2, W/TiB2, Fe/B4C and W/B4C was investigated. These composites may be used as fillers for ultrahigh-molecular polyethylene intended for protection from neutron and g-radiation. Mechanochemical synthesis of the composites was carried out in a planetary ball mill with water cooling in the atmosphere of argon. The phase composition, structural and morphological characteristics of the composites, and their thermal stability were studied by means of a set of physicochemical methods (X-ray phase analysis, scanning electron microscopy, thermal analysis). It is demonstrated that the composites Fe/TiB2, W/TiB2, Fe/B4C and W/B4C are formed during mechanical activation. They are composed of particles 0.5-1.0 μm in size, their shapes being close to spherical. The particles are agglomerated into larger formations 30-50 μm in size. The resulting composites exhibit thermal stability under heating to ~800 °C.
DOI: 10.15372/CSD2019137
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