Abstract
The elevated temperature oxidation of 18Cr-8Ni austenitic stainless steels in air is normally characterized by the formation of a protective, external chromium oxide scale. The low growth rate of this layer protects the underlying metal from further oxidation. Laboratory testing of thin stainless steel foil specimens demonstrates that the presence of water vapor decreases the time required for breakaway oxidation to occur. Accelerated oxidation begins after the end of an incubation period, the length of which is affected by the amount of water vapor present. Changes in scale microstructure accompany the transition from normal to accelerated oxidation. Rapid oxidation is accompanied by the formation of a thick, duplex scale comprised of a complex inner layer and an iron oxide outer layer.
Original language | English |
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Journal | NACE - International Corrosion Conference Series |
Volume | 2000-March |
State | Published - 2000 |
Event | Corrosion 2000 - Orlando, United States Duration: Mar 26 2000 → Mar 31 2000 |