Estimating the erosion corrosion wear on components made of unalloyed steel subjected to wet steam

The erosion corrosion behaviour of stationary components subjected to wet steam and hot water in powerstation plants is a phenomenon to which more attention has been paid internationally during the last few years. Experimental model investigations on a wet steam erosion corrosion test rig were carried out on behalf of powerstation operators at the TU Dresden. Their aim was the creation of documents for the development of the summary erosion corrosion wear on samples of unalloyed steel at different wet steam parameters, omitting exact knowledge on the proportion of the components corrosion, erosion due to wall thrust stress and drop impact erosion in the complex wear process. The empirical model derived from the series of experiments carried out for calculating erosion corrosion rates depending on the parameters describes the relationships in the defined range of validity with sufficient accuracy. (orig.)