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10339 Functional Surface Properties of Stainless Steels

Product Number: 51300-10339-SG
ISBN: 10339 2010 CP
Author: Thomas L. Ladwein, Matthias Sorg, Sebastian Schilling, Sybille Schilling
Publication Date: 2010
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The passivation behavior of 304L, 316L and 22 %Cr duplex stainless steel has been studied as a function of mechanical. chemical and/or.electrochemical treatment. Surface energies, impedance spectra and pitting potentials were evaluated as measures to characterize the functional surface properties. Specimen blasted with glass beads always performed better than those blasted with alumina. Nitric acid has no long time benefits as a passivating agent. The influence of citric acid on the passive behavior is marginal and does in the long run not at all reach that of a air-only passivated specimen.

Keywords: stainless steel, surface properties, passivity
The passivation behavior of 304L, 316L and 22 %Cr duplex stainless steel has been studied as a function of mechanical. chemical and/or.electrochemical treatment. Surface energies, impedance spectra and pitting potentials were evaluated as measures to characterize the functional surface properties. Specimen blasted with glass beads always performed better than those blasted with alumina. Nitric acid has no long time benefits as a passivating agent. The influence of citric acid on the passive behavior is marginal and does in the long run not at all reach that of a air-only passivated specimen.

Keywords: stainless steel, surface properties, passivity
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