Abstract
AbstractMeasurement of the polarization resistance of Fe, Ni, 8% Cr stell and CrNi stell 18 8 reveals that the corrosion rate increase as the SO3 partial pressure in the gas phase is increased. While a protective layer appears to be formed in alloyed steel in neutral melts (a fact which is reflected in an increase of the polarization resistance) no such layer can be identified on Fe and Ni. Addition of NiSO4 to the SO3 partial pressure; this effect is probably due to a thermal decomposition of a salt. The exact correlation of weight loss and polarization resistance requires, however, more detailed investigation.
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