Tungsten Carbide 에 관한 연구 : 산화텅스텐과 금속텅스텐에 미치는 일산화탄소 가스의 영향 The Effects of Carbon Monoxide on Tungstic Oxide and Metallic Tungsten in the Formation of Tungsten Carbide = A Study on Tungsten Carbide

국문 초록 (Abstract)

Tungstic oxide의 환원반응시 tungsten carbide의 생성이 용이함을 이용하여 일산화 탄소 분위기내에서 W-WC의 평형을 조사하였다. 실험결과 W+2CO=WC+CO₂ 반응의 평형상수 K와 free energy change ΔG는 다음과 같다. log K=10,950/T-10.11, ΔG=-50,129+46.3T. 동시에 일산화 탄소 분압에 따른 반응특성과 반응온도가 생성물의 입자크기에 미치는 영향을 고찰하였다.

다국어 초록 (Multilingual Abstract)

Thermodynamic Characteristics for the formation of tungsten carbide in CO atmosphere were studied by measuring the temperatures of formation of tungsten carbide. It was observed that tungstic oxide rapidly converted to the carbide in comparison with the metallic tungsten under same conditions. The equilibrium constant of the following reaction W+2CO=WC+CO₂ was determined as log K=10,950/T-10.11 then, Gibbs free energy change was calculated as follows ΔG=-50,129+46.3T
Some reaction kinetics on the formation of tungsten carbide under various partial pressures of CO gas and temperatures were investigated and the particle sizes of the products obtained at various conditions were checked.

목차 (Table of Contents)

• 1.서론
• 2.실험장치 및 방법
• A) 시료의 제조
• B) 실험장치
• C) 실험방법
• 3.결과 및 검토
• A) W-WC의 평형
• B) 반응 속도
• C) 입자의 크기
• 4.결론