Austenitic and ferritic steels were exposed in the superheater area of a straw-fired CHP plant. The specimens were exposed for 1400 hours at 450-600°C. The rate of corrosion was assessed based on unattacked metal remaining. The corrosion products and course of corrosion for the various steel types were investigated using light optical and scanning electron microscopy. The ferritic steels suffered from corrosion mainly via material loss. The austenitic steels suffered from predominantly selective corrosion resulting in chromium depletion from the alloy. A clear trend was observed that selective corrosion increased with increasing chromium content of the alloy.
|Title of host publication||Solutions of Corrosion Problems in Advanced Technologies|
|Place of Publication||Frankfurt|
|Publication status||Published - 1999|
|Event||EUROCORR '99 - Aachen, Germany|
Duration: 30 Aug 1999 → 2 Sep 1999
|Period||30/08/1999 → 02/09/1999|