Abstract
In order to study the corrosion behaviour of stainless steels on the base of Fe-18Cr-10Ni were conducted in a simulated waste incineration atmosphere discontinuous exposures. Especially the influence of surface preparation and also the influence of alloying elements on the corrosion were of interest. Therefore different surface preparations as sandblasting, grinding and electropolishing were applied to the samples before exposure. The experiments were carried out in a N 2 -5%O 2 -2.5%H 2 O-0.05%HCl-0.05%SO 2 atmosphere at 600 °C with the samples embedded in fly ash from a waste incineration plant. In addition thermogravimetric experiments were conducted in a He-5%O 2 -0.05%HCl atmosphere at 600 °C without fly ash using a microbalance. Analysis of the corrosion products was performed after the experiments by scanning electron microscopy with EDX and X-ray analysis. The metal losses of the samples were determined after removing the corrosion scale.
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