The functional quality of stainless steels is not only determined by the chemical composition i.e. the steel grade but also dependant on their surface finish which is achieved by mechanical and/or chemical treatments. Stainless steels 1.4301 (AISI 304) and 1.4404 (AISI 316L) having been given different surface preparations (grinding, pickling, passivating) were investigated with electrochemical procedures using current noise as a tool to characterize the quality. Electrochemical current noise showed to be useful in respect to differentiate between the properties obtained by these treatments and can be developed into a useful tool in order to determine the quality of a supplied product.

Subject
Steel surfaces, Materials, Anode potential, Electrochemical noise, Grinding, Roughness, Tools, Anode surfaces, Metallic surfaces, Current noise, Specimen preparation, Stainless steel, Steel grit
Keywords:
stainless steel, surface properties, electrochemical noise
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2007
Association for Materials Protection and Performance (AMPP)
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