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ZrB2–SiC–ZrC nanocomposites containing different contents of ZrC (6–20wt%) were fabricated by spark plasma synthesizing and sintering method. Sintering mechanism was investigated by studying the displacement-temperature-time (DTT) diagrams which were obtained during spark plasma cycles. The flexural strength, hardness and fracture toughness were measured. The mean crystallite size of 77, 62 and 56nm...
This study investigates the low-temperature sintering of nano Si-C powder containing Al-C additives prepared by high-energy ball-milling. The synthesized powder was composed of ultra-fine β-SiC crystallites (~5nm) and amorphous Si-C matrix. TEM-EDS analysis showed a relatively homogeneous distribution of Al in the synthesized powder (d50: 170nm). The relative density of SiC containing 6.5wt% additives...
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