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High temperature corrosion of iron in sulfur containing atmospheres

Technical Report ·
OSTI ID:6469705
The simultaneous oxidation-sulfidation of pure iron in SO/sub 2/-CO/sub 2/ and SO/sub 2/-O/sub 2/ atmosphere has been studied at 871/sup 0/C. Although thermodynamic calculations predict the formation of an oxide layer, complex product layers of oxide and sulfide duplex structure are observed. The outer product layer is an oxide matrix, containing sulfide-rich streaks. The inner layer is porous and also contains sulfides. The rough surface of the oxidized sample is caused by protrusions on the outer scale. The protrusions are thought to grow by the fast transport of iron ions through the sulfide-rich streaks.
Research Organization:
Lawrence Berkeley Lab., CA (USA)
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
6469705
Report Number(s):
LBL-12851; ON: DE81025682
Country of Publication:
United States
Language:
English