Information from the abstract
Abstract This research examines the passivation behavior of AISI 304L stainless steel containing various weight percentages of manganese and copper. Four specific alloy compositions were analyzed: 1.0%Mn-0.23%Cu, 1.2%Mn-0.40%Cu, 1.4%Mn-0.22%Cu, and 1.7%Mn-0.37%Cu. Potentiodynamic polarization tests were conducted in citric acid solutions (4, 6, 8, and 10 wt.%) at temperatures of 298, 323, and 343 K. The results demonstrate that higher temperatures and citric acid concentrations accelerate the corrosion rate while reducing both corrosion resistance and the stability of the passive region. It is found that the synergistic addition of manganese and copper enhanced the overall corrosion resistance of AISI 304L. Furthermore, an increase in temperature led to a positive shift in corrosion potential, while the transpassive potential shifted towards more active values.
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Related topics: Hydrogen embrittlement and corrosion behaviors in metals · Corrosion Behavior and Inhibition · Magnesium Alloys: Properties and Applications
Thai researcher and institutional participation
Anchaleeporn Waritswat Lothongkum · Kanrayaphus Tipves · Nichit Hongbin · Patcharapol Chaladthunyakij · Gobboon Lothongkum · Piyanart Sommani · King Mongkut's Institute of Technology Ladkrabang · Chulalongkorn University
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