CdO의 NONSTOICHIOMETRIC COMPOSITIONS 에 관한 연구 = STUDY ON NONSTOICHIOMETRIC COMPOSITIONS OF CADMIUM OXIDE

다국어 초록 (Multilingual Abstract)

The x-values of the nonstoichiometric chemical formula, Cd1+xO have been measured by a quartz microbalance in the temperature range of 100 to 600℃ under oxygen pressures from 1 to 10-5atm. The x-values varied 0.00051 to 0.02410 in the above conditions. The enthalpies of formation of excess cadmium in cadmium oxide, ΔHf, are 1.65 to 3.11Kcal/mole, and the positive values of ΔHf indicate that the reactions are the endothermic process. The plots of log x vs. log Po2 (or log x = 1/n log Po2) show linearity and 1/n values calculated from the slopes of the plots are -1/3.92 to - l/6.90 in the above conditions. The 1/n values are responsible for singly ionized excess cadmium at 100℃ and doubly ioni3ed excess cadmium im the temperature range of 500 to 600℃. It is considered the x-values are useful for the interpretation of the physical properties of the cadmium oxide.

목차 (Table of Contents)

• Ⅰ. 서론
• Ⅱ. 실험
• 1) 시료제조 및 분석
• 2) 실험장치
• 3) 실험방법
• Ⅲ. 실험결과
• Ⅳ. 고찰
• 1) x-값에 대한 일반론
• 2) x-값의 온도 의존성
• 3) x-값의 산소압력 의존성
• 4) 산화카드뮴의 과잉카드뮴 생성엔탈피 (ΔHf)
• 5) 1/n 값