Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless Steels

Title
Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless Steels
Authors
천동원배지환Heon-Young HaTae-Ho Lee
Keywords
high interstitial alloy; molybdenum; pitting corrosion; passive film
Issue Date
2018-08
Publisher
Metals
Citation
VOL 8, NO 8, 653
Abstract
For Fe-based 18Cr10Mn0.4N0.5C(0– 2.17)Mo (in wt %) austenitic stainless steels, effects of Mo on pitting corrosion resistance and the improvement mechanism were investigated. Alloying Mo increased pitting and repassivation potentials and enhanced the passive film resistance by decreasing number of point defects in the film. In addition, Mo reduced critical dissolution rate of the alloys in acidified chloride solutions, and the alloy with higher Mo content could remain in the passive state in stronger acid. Thus, it was concluded that the alloying Mo enhanced pitting corrosion resistance of the alloys through increasing protectiveness of passive film and lowering pit growth rate
URI
http://pubs.kist.re.kr/handle/201004/68002
ISSN
2075-4701
Appears in Collections:
KIST Publication > Article
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