Relationship between niobium content and pitting corrosion resistance in ferritic stainless steels

Pitting corrosion behaviour of three ferritic stainless steels with different niobium contents was studied by measuring the critical pitting potential and the induction time for pitting. The results indicate an increase in critical pitting potential and in the induction time when the niobium content...

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Bibliographic Details
Published in:Materials letters 1995-10, Vol.25 (1), p.57-60
Main Authors: Sousa, C.A.C., Kuri, S.E.
Format: Article
Language:English
Subjects:
Applied sciences
Corrosion
Corrosion environments
Exact sciences and technology
Metals. Metallurgy
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Summary:Pitting corrosion behaviour of three ferritic stainless steels with different niobium contents was studied by measuring the critical pitting potential and the induction time for pitting. The results indicate an increase in critical pitting potential and in the induction time when the niobium content increases. These results are discussed in terms of the superficial semiconductor oxide changes promoted by niobium ion incorporation.
ISSN:0167-577X
1873-4979
DOI:10.1016/0167-577X(95)00134-4