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Type: Artigo de periódico
Title: Effect Of Small Amounts Of Elements On Shapes Of Potentiodynamic And Potentiostatic Curves Of Aisi 304l And Aisi 316l Stainless Steels In Chloride Media
Author: Pulino-Sagradi D.
Alonso-Falleiros N.
Abstract: Samples of high purity grade and commercial purity grade type AISI 304L and AISI 316L steels were studied by the potentiodynamic and potentiostatic techniques in a naturally aerated 3.5% NaCl aqueous solution at a controlled temperature of (23±2)°C. The anodic polarization curves of the potentiodynamic technique showed that not always is it possible to determine pitting potential: most of the curves of commercial purity grade steels displayed a smooth curvature in the region where the current density should increase sharply. The density current versus time potentiostatic curves also showed different shapes according to the purity grade steels: for the commercial purity grade steels, the current density showed large oscillations with time (related to unstable pits), whereas for the high purity grade steels, a regular behavior of current density as a function of time was found (related to stable pits).
Editor: ABEQ, Sao Paulo, Brazil
Rights: aberto
Identifier DOI: 
Date Issue: 1997
Appears in Collections:Unicamp - Artigos e Outros Documentos

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