Abstract
Ultra-fine zirconium carbide (ZrC) powder with nano-sized primary particles was synthesized by the carbothermal reduction method by using nano-sized <TEX>$ZrO_2$</TEX> and nano-sized graphite powders mixture. The synthesized ZrC powder was well dispersed after simple milling process. After heat-treatment at <TEX>$1500^{\circ}C$</TEX> for 2 h under vacuum, ultra-fine ZrC powder agglomerates (average size, <TEX>$4.2{\mu}m$</TEX>) were facilely obtained with rounded particle shape and particle size of ~200 nm. Ultra-fine ZrC powder with an average particle size of 316 nm was obtained after ball milling process in a planetary mill for 30 minutes from the agglomerated ZrC powder.
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