마그네슘환원에 의한 C/N 조성제어 초미립 TiCxNy 분말 합성
Preparation of Ultrafine C/N Controled TiCxNy Powders by Magnesium Reduction
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초록
The ultrafine titanium carbonitride (TiCxNy) particles below 100 nm in mean size, including various carbon and nitrogen contents (x=0.55~0.9, y=0.1~0.5), were successfully synthesized by new Mg-thermal reduction process. Nanostructured sub-stoichiometric titanium carbide (TiCx) particles were initially produced by the magnesium reduction of gaseous TiCl4+x/2C2Cl4 at 890oC and post heat treatments in vacuum were performed for 2 hrs to remove residual magnesium and magnesium chloride mixed with TiCx. Finally, well C/N-controled TiCxNy phases were successfully produced by nitrification heat treatment under normal N2 gas atmosphere at 1150oC for 2 hrs. The values of purity, mean particle size and oxygen content of produced particles were about 99.3%, 100 nm and 0.2 wt.%, respectively.
Abstract
The ultrafine titanium carbonitride (TiCxNy) particles below 100 nm in mean size, including various carbon and nitrogen contents (x=0.55~0.9, y=0.1~0.5), were successfully synthesized by new Mg-thermal reduction process. Nanostructured sub-stoichiometric titanium carbide (TiCx) particles were initially produced by the magnesium reduction of gaseous TiCl4+x/2C2Cl4 at 890oC and post heat treatments in vacuum were performed for 2 hrs to remove residual magnesium and magnesium chloride mixed with TiCx. Finally, well C/N-controled TiCxNy phases were successfully produced by nitrification heat treatment under normal N2 gas atmosphere at 1150oC for 2 hrs. The values of purity, mean particle size and oxygen content of produced particles were about 99.3%, 100 nm and 0.2 wt.%, respectively.
참고문헌 (13)
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