마그네슘의 금속염화물 환원에 의한 초미립 TiCN 분말합성
Preparation of Ultrafine TiCN Powders by Mg-reduction of Metallic Chlorides
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The ultrafine titanium carbonitride particles (TiC0.7N0.3) below 100㎚ in mean size were successfully synthesized by Mg-thermal reduction process. The nanostructured sub-stoichiometric titanium carbide (TiC0.7) particles were produced by the magnesium reduction at 1123K of gaseous TiCl4+xC2Cl4 and the heat treatments in vacuum were performed for five hours to remove residual magnesium and magnesium chloride mixed with TiC0.7. And final TiC0.7N0.3 phase was obtained by nitrification under normal N2 gas at 1373K for 2 hrs. The purity of produced TiC0.7N0.3 particles was above 99.3% and the oxygen contents below 0.2 wt%. We investigated in particular the effects of the temperatures in vacuum treatment on the particle refinement of final product.
Abstract
The ultrafine titanium carbonitride particles (TiC0.7N0.3) below 100㎚ in mean size were successfully synthesized by Mg-thermal reduction process. The nanostructured sub-stoichiometric titanium carbide (TiC0.7) particles were produced by the magnesium reduction at 1123K of gaseous TiCl4+xC2Cl4 and the heat treatments in vacuum were performed for five hours to remove residual magnesium and magnesium chloride mixed with TiC0.7. And final TiC0.7N0.3 phase was obtained by nitrification under normal N2 gas at 1373K for 2 hrs. The purity of produced TiC0.7N0.3 particles was above 99.3% and the oxygen contents below 0.2 wt%. We investigated in particular the effects of the temperatures in vacuum treatment on the particle refinement of final product.
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