철의 고온 산화반응기구에 관한 연구

• 영문명: A Study on the Mechanism of Oxidation Kinetics oi iron at High Temperatures
• 발행기관: 호서대학교 공업기술연구소
• 저자명: 유재근
• 간행물 정보: 『공업기술연구 논문집』제16권 제1호, 611~634쪽, 전체 24쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 1997.12.30

영문 초록

A theoretical model was proposed to illucidate the oxidation mechanism of metals for the case in which solid reactants diffuse through the oxide product layer and react with oxygen gas on the surface. This model was derived on the bases of intragranular and intergranular diffusion, also combined with structural parameters such as porosity, grain size and the effective diffusion coefficient of the gas. The oxidation rate of iron which forms the P-type oxide was measured at elevated temperatures. The rate increased with increasing porosity, reaction temperature and oxygen partial pressure. For the case where the diffusion of iron ions through the product layer was the rate determining step, the activation energy for the iron oxidation was 35Kcal/mol. The computer simulation of the model for given boundary conditions was in good agreement with experimental results, and these experimental results were interpreted by the computer simulation.

목차

1• 서 론

2. 모델식

3. 실험장치 및 실험

4 . 신험견과

5. 고 찰

6 • 결 론