Abstract
The proposed method of obtaining of boron carbide B4C matrix composites B4C–(Ti,Zr)B2–W2B5 without and with cobalt Co additive is based on preparing corresponding precursor pastes from commercially available compounds and their processing in controlled thermal regimes. This technique makes it possible to synthesize all the component phases – B4C, TiB2, ZrB2, W2B5 and Co – from cobalt-containing liquid-charge at relatively low temperatures of ∼1000 °C, while from cobalt-free precursors only zirconium diboride formation can be observed under the same conditions. Maintaining the initial grains size or their growth inhibition at spark-plasma sintering of boron carbide matrix composite powders with cobalt additive is one more advantage of the introduced approach.
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