Abstract
Cover:High temperature corrosion attack of the surface of a heat resistant highalloy steel for boiler tubes (DMV304HCu) after exposure to a chlorine‐free coal‐power‐plant ash at 625 °C for 1000 hours (cross section/false colors): Coal‐power‐plant ash containing sulphur, sodium, potassium, calcium and iron‐rich oxides (dark red and violet); outer iron‐rich oxide scale (yellow); inward growing chromia scale containing sulphur (turquoise); small chromium sulphides at the corrosion front in the metal subsurface zone (pink).The corrosion test was conducted within a project of DECHEMAForschungsinstitut to investigate accelerated hot‐corrosion through co‐firing of “green fuels” in conventional coal‐fired power plants. The project was funded by Federal Ministry for Economic Affairs and Energy (BMWi) under contract No. 03ET7012D. More detailed information on the project can be found at http://dechema‐dfi.de/en/L%C3%BCbkorr.html
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