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High‐temperature surface oxidation of low‐carbon rimming steel
Author(s) -
Iordanova I.,
Surtchev M.,
Forcey K. S.,
Krastev V.
Publication year - 2000
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/1096-9918(200008)30:1<158::aid-sia744>3.0.co;2-6
Subject(s) - annealing (glass) , kinetics , oxide , materials science , diffraction , metallurgy , analytical chemistry (journal) , chemical engineering , chemistry , environmental chemistry , optics , physics , engineering , quantum mechanics
Phase composition and macrostructure of the surface oxide films formed during the oxidation of hot‐rolled low‐carbon rimming steel in air at 600 °C have been investigated by standard and grazing incidence x‐ray diffraction. The oxidation kinetics have been analysed by the weight change method. It has been revealed that the oxide film consists of layers of FeO, Fe 3 O 4 and Fe 2 O 3 . The latter two phases have been observed after 2 min of oxidation, whereas the first one appears only after 6 min of annealing in air at 600 °C. The oxidation kinetics obeys a logarithmic law during the whole investigated time interval of annealing. Copyright © 2000 John Wiley & Sons, Ltd.