SURFACE TREATMENTS AND THEIR INFLUENCE ON THE CORROSION-RESISTANCE OFSTAINLESS-STEEL

The surface treatments pickling, grinding and glass beading were inves tigated on several stainless austenitic steels and one ferritic/austen itic steel. The different surface treatments were used on two differen t prepared types of samples: 1. high temperature oxidized samples 2. w elded samples The quality of the surface treatments has been examined by means of potentiodynamic, ferric chloride, dip and spray tests made in series. The corrosion resistance was highly depending on the used treatments. All in all the examination showed that a higher corrosion resistance was achieved by pickling than by grinding or glass beading.