Journal
MATERIALS LETTERS
Volume 60, Issue 19, Pages 2419-2422Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2006.01.053
Keywords
cavitation-annealing; nano-structure; pitting corrosion; stainless steel
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A nanocrystalline surface layer on 316L stainless steel was fabricated by cavitation followed by low-temperature annealing. The corrosion characteristics of the nanostructured surface in 0.9wt.% NaCl solution at 25 degrees C were investigated by electrochemical measurements. The nanocrystalline surface leads to a lower susceptibility to pitting corrosion and higher repassivation power as indicated by noble shift in the pitting and protection potentials, and lower corrosion current density. In addition, the pitting resistance of 3 16L increases with the decrease in grain size. (c) 2006 Elsevier B.V. All rights reserved.
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