Role of nitrite addition in chloride stress corrosion cracking of a super duplex stainless steel

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This paper presents the role of addition of nitrite ions in susceptibility of a super duplex stainless steel, SAF 2507 to stress corrosion cracking (SCC) in chloride environment, which has a particular industrial relevance. Slow strain rate testing (SSRT) in 30 wt. MgCl2 solution established SCC susceptibility, as evidenced by post-SSRT fractography. However, the addition of nitrite has interesting influence. At their lower concentrations, nitrite additions seem to decrease SCC susceptibility, whereas, at a higher concentration, it has an accelerating effect on SCC. Attempts have been made to understand this behaviour on the basis of the role of nitrite in passivation and pitting characteristics of SAF 2507 in chloride solution.
Original languageEnglish
Pages (from-to)113 - 117
Number of pages5
JournalCorrosion Science
Volume52
Issue number1
DOIs
Publication statusPublished - 2010

Cite this

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title = "Role of nitrite addition in chloride stress corrosion cracking of a super duplex stainless steel",
abstract = "This paper presents the role of addition of nitrite ions in susceptibility of a super duplex stainless steel, SAF 2507 to stress corrosion cracking (SCC) in chloride environment, which has a particular industrial relevance. Slow strain rate testing (SSRT) in 30 wt. MgCl2 solution established SCC susceptibility, as evidenced by post-SSRT fractography. However, the addition of nitrite has interesting influence. At their lower concentrations, nitrite additions seem to decrease SCC susceptibility, whereas, at a higher concentration, it has an accelerating effect on SCC. Attempts have been made to understand this behaviour on the basis of the role of nitrite in passivation and pitting characteristics of SAF 2507 in chloride solution.",
author = "Singh, {Raman Raghuvir Kumar} and Siew, {Wai Hoong}",
year = "2010",
doi = "10.1016/j.corsci.2009.08.041",
language = "English",
volume = "52",
pages = "113 -- 117",
journal = "Corrosion Science",
issn = "0010-938X",
publisher = "Elsevier",
number = "1",

}

Role of nitrite addition in chloride stress corrosion cracking of a super duplex stainless steel. / Singh, Raman Raghuvir Kumar; Siew, Wai Hoong.

In: Corrosion Science, Vol. 52, No. 1, 2010, p. 113 - 117.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Role of nitrite addition in chloride stress corrosion cracking of a super duplex stainless steel

AU - Singh, Raman Raghuvir Kumar

AU - Siew, Wai Hoong

PY - 2010

Y1 - 2010

N2 - This paper presents the role of addition of nitrite ions in susceptibility of a super duplex stainless steel, SAF 2507 to stress corrosion cracking (SCC) in chloride environment, which has a particular industrial relevance. Slow strain rate testing (SSRT) in 30 wt. MgCl2 solution established SCC susceptibility, as evidenced by post-SSRT fractography. However, the addition of nitrite has interesting influence. At their lower concentrations, nitrite additions seem to decrease SCC susceptibility, whereas, at a higher concentration, it has an accelerating effect on SCC. Attempts have been made to understand this behaviour on the basis of the role of nitrite in passivation and pitting characteristics of SAF 2507 in chloride solution.

AB - This paper presents the role of addition of nitrite ions in susceptibility of a super duplex stainless steel, SAF 2507 to stress corrosion cracking (SCC) in chloride environment, which has a particular industrial relevance. Slow strain rate testing (SSRT) in 30 wt. MgCl2 solution established SCC susceptibility, as evidenced by post-SSRT fractography. However, the addition of nitrite has interesting influence. At their lower concentrations, nitrite additions seem to decrease SCC susceptibility, whereas, at a higher concentration, it has an accelerating effect on SCC. Attempts have been made to understand this behaviour on the basis of the role of nitrite in passivation and pitting characteristics of SAF 2507 in chloride solution.

U2 - 10.1016/j.corsci.2009.08.041

DO - 10.1016/j.corsci.2009.08.041

M3 - Article

VL - 52

SP - 113

EP - 117

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

IS - 1

ER -