Specific features of sintering of HfB2-based refractory ceramic by hybrid spark plasma sintering

Specific features of sintering of HfB2-based refractory ceramic by hybrid spark plasma sintering Systems based on refractory ZrB2 and HfB2 powders are the most promising for fabrication of newgeneration aircraft parts working under extreme conditions. The complexity of sintering of these powders is overcome by using the spark plasma sintering method (SPS/FAST) with additional inductive heating. The sintering of HfB2-SiC samples separately in the SPS mode or by inductive heating at 100 deg min−1 failed to provide samples with required quality. It was shown that the relative density differential for samples 100 mm in diameter, sintered in the combined-heating mode [simultaneously by inductive and spark plasma sintering (SPS)] does not exceed 2.4%. Oxidation resistance tests of the samples at temperatures T ≥ 1800°C demonstrated that further studies of the HfB2-SiC system as a material for aircraft articles are needed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Specific features of sintering of HfB2-based refractory ceramic by hybrid spark plasma sintering

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Pleiades Publishing
Copyright © 2015 by Pleiades Publishing, Ltd.
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
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