ISSN:
1573-4889
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The reaction of iron with 1% HCl/0–50% O2/Ar has been studied at 550°C with thermogravimetry to monitor kinetics and scanning electron microscopy to characterize product morphologies. In addition, the volatile species were identified with an atmospheric pressure sampling mass spectrometer. The reaction of 1% HCl/Arproduces FeCl2. The reactions of 1% HCl/1, 10, 50% O2/Ar produce Fe2O3, Fe3O4, FeCl2, and FeCl3. In each case condensed phase chlorides form at the oxide/metal interface where the oxygen potential is low. The 10 and 50% oxygen mixtures have kinetics in the first 3 hr similar to pure oxidation with some deviations due to iron-chloride formation. The 1% oxygen mixture shows enhanced reaction rates over oxidation, very likely due to the formation of a porous scale.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00659182
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