Abstract
Various austenitic and ferritic steels were exposed on a
water-cooled probe in the superheater area of a straw-fired CHP
plant. The temperature of the probe ranged from 450-600°C and the
period of exposure was 1400 hours. 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 which resulted in depletion of chromium from the alloy.
A clear trend was observed that selective corrosion increased with
respect to the chromium content of the alloy.
| Original language | English |
|---|---|
| Journal | Materials and Corrosion |
| Volume | 50 |
| Issue number | 10 |
| Pages (from-to) | 579-584 |
| ISSN | 0947-5117 |
| Publication status | Published - 1999 |