熔融鉄炭素合金の脱炭反応に関する研究(IV)

Abstract

The rates of carbon removal of molten Fe-C alloys containing 0.5-4%C with water vapour of H2-H2O, O2-H2O gas system were measured by flow method.The results obtained were as follows.In the system of H2-H2O gas mixture, the rates of carbon removal were proportional to the partial pressure of water vapour between 7 and 32mmHg. The dissolved oxygen in the melt during the reaction was independent of the pressure of water vapour and in some degree higher than the equilibrium value. From these results the reaction was considered to take place on the interface. The specific rate constant was somewhat smaller than that with oxygen gas of the same pressure. The increased amounts of the carbon removal with water vapour in the addition of water vapour to oxygen gas were influenced by oxygen gas pressure. The oxidation of carbon monoxide formed to carbon dioxide in the carbon reaction with oxygen gas was remarkable, but in the presence of water vapour this oxidation almost did not take place.