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The oxidation of Fe by water (H 2 O) vapour was studied using X-ray photoelectron spectroscopy (XPS) and QUASES™. The results indicated that the oxide formed at 25°C and 150°C was thinner than that formed when oxygen (O 2 ) gas was present. The kinetics of the reaction were studied and found to follow a direct logarithmic relationship at both 25°C and 150°C. At 150°C, a change in mechanism...
In order to obtain insight in the oxidation mechanism of Fe(100) in oxygen and water and determine the rate limiting step in the oxidation, we studied the initial oxidation of Fe(100) in water vapor and water vapor/oxygen gas mixtures using ERD, XPS and ellipsometry. The hydrogen content of the oxide layer grown at room temperature was determined. The H/O ratio in the oxide layer amounted to 0.28+/-0...
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