Oxidation of iron at 400-600 °C in dry and wet O2
Journal article, 2010

The oxidation of iron in dry and wet O-2 at 400-600 degrees C has been re-investigated using gravimetry, SEM/EDX, XRD and FIB. In the presence of O-2, water vapour accelerates iron oxidation at 500 and 600 degrees C. At 400 and 500 degrees C the magnetite layer is duplex and exposure to water vapour results in the formation of blades on top of a fine-grained hematite layer. At 600 degrees C it results in a surface without needles and blades. The increased oxidation rate at 500 and 600 degrees C is attributed to a smaller grain size in the hematite layer resulting in faster ion transport.

Oxidation kinetics of iron

Textured growth hematite

Water vapour

Void distribution

Author

Bagas Pujilaksono

Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry

Torbjörn Jonsson

Chalmers, Applied Physics, Microscopy and Microanalysis

Mats Halvarsson

Chalmers, Applied Physics, Microscopy and Microanalysis

Jan-Erik Svensson

Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry

Lars-Gunnar Johansson

Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry

Corrosion Science

0010-938X (ISSN)

Vol. 52 5 1560-1569

Subject Categories

Materials Engineering

DOI

10.1016/j.corsci.2010.01.002

More information

Created

10/7/2017