Effect of Electrochemical Potential on Stress Corrosion Cracking Susceptibility of EN 1.4301 (AISI 304) Austenitic Stainless Steels in Simulated Hot Black Liquor

Pekka Pohjanne; Mikko Vepsäläinen; Timo Saario; Konsta Sipilä; Jyrki Romu; Tapio Saukkonen; Hannu Hänninen; Mikko Heikkilä; Juha Koskiniemi; Carl-Gustav Berg; Martti Pulliainen; Isto Virtanen; Thomas Ohligschläger

doi:10.5006/1594

Effect of Electrochemical Potential on Stress Corrosion Cracking Susceptibility of EN 1.4301 (AISI 304) Austenitic Stainless Steels in Simulated Hot Black Liquor

Pekka Pohjanne
, Mikko Vepsäläinen
, Timo Saario^*
, Konsta Sipilä
, Jyrki Romu
, Tapio Saukkonen
, Hannu Hänninen
, Mikko Heikkilä
, Juha Koskiniemi
, Carl-Gustav Berg
, Martti Pulliainen
, Isto Virtanen
, Thomas Ohligschläger

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

4 Citations (Scopus)

Abstract

Stress corrosion cracking (SCC) susceptibility of austenitic EN 1.4301 (AISI 304) stainless steel was studied as a function of electrode potential at T = 190°C in 15 g kg-1 NaOH + 150 g kg-1 Na₂S containing caustic environment simulating heavy black liquors (HBL) of pulp industry. Severe cracking was detected at corrosion potential and at cathodic potential of -0.11 V_Mo/MoS2 reference electrode. On the other hand, at anodic potentials of +0.03 to +0.3 V_Mo/MoS2 no cracking was observed. Thus, SCC of EN 1.4301 steel can potentially be mitigated in HBL environment by applying anodic protection. At the corrosion potential selective dissolution of Fe and slight localized enrichment of Ni and Cr as well as Na, S and O was observed. At anodic potentials Fe was selectively dissolved and marked enrichment of both Ni and Cr as well as Na, S and O took place in the corrosion product. The simultaneous enrichment of Ni and Cr in the corrosion product film was concluded to be the precondition to prevent stress corrosion cracking.

Original language	English
Pages (from-to)	887-894
Journal	Corrosion
Volume	71
Issue number	7
DOIs	https://doi.org/10.5006/1594
Publication status	Published - 2015
MoE publication type	A1 Journal article-refereed

Keywords

austenitic stainless steel
stress corrosion cracking
selective dissolution
alkaline solution
sodium hydroxide
sodium sulfide

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Pohjanne, P., Vepsäläinen, M., Saario, T., Sipilä, K., Romu, J., Saukkonen, T., Hänninen, H., Heikkilä, M., Koskiniemi, J., Berg, C.-G., Pulliainen, M., Virtanen, I., & Ohligschläger, T. (2015). Effect of Electrochemical Potential on Stress Corrosion Cracking Susceptibility of EN 1.4301 (AISI 304) Austenitic Stainless Steels in Simulated Hot Black Liquor. Corrosion, 71(7), 887-894. https://doi.org/10.5006/1594

@article{390d89be43fc44a6a513a7d31ecce40c,

title = "Effect of Electrochemical Potential on Stress Corrosion Cracking Susceptibility of EN 1.4301 (AISI 304) Austenitic Stainless Steels in Simulated Hot Black Liquor",

abstract = "Stress corrosion cracking (SCC) susceptibility of austenitic EN 1.4301 (AISI 304) stainless steel was studied as a function of electrode potential at T = 190°C in 15 g kg-1 NaOH + 150 g kg-1 Na2S containing caustic environment simulating heavy black liquors (HBL) of pulp industry. Severe cracking was detected at corrosion potential and at cathodic potential of -0.11 VMo/MoS2 reference electrode. On the other hand, at anodic potentials of +0.03 to +0.3 VMo/MoS2 no cracking was observed. Thus, SCC of EN 1.4301 steel can potentially be mitigated in HBL environment by applying anodic protection. At the corrosion potential selective dissolution of Fe and slight localized enrichment of Ni and Cr as well as Na, S and O was observed. At anodic potentials Fe was selectively dissolved and marked enrichment of both Ni and Cr as well as Na, S and O took place in the corrosion product. The simultaneous enrichment of Ni and Cr in the corrosion product film was concluded to be the precondition to prevent stress corrosion cracking.",

keywords = "austenitic stainless steel, stress corrosion cracking, selective dissolution, alkaline solution, sodium hydroxide, sodium sulfide",

author = "Pekka Pohjanne and Mikko Veps{\"a}l{\"a}inen and Timo Saario and Konsta Sipil{\"a} and Jyrki Romu and Tapio Saukkonen and Hannu H{\"a}nninen and Mikko Heikkil{\"a} and Juha Koskiniemi and Carl-Gustav Berg and Martti Pulliainen and Isto Virtanen and Thomas Ohligschl{\"a}ger",

year = "2015",

doi = "10.5006/1594",

language = "English",

volume = "71",

pages = "887--894",

journal = "Corrosion",

issn = "0010-9312",

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number = "7",

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Pohjanne, P, Vepsäläinen, M, Saario, T, Sipilä, K, Romu, J, Saukkonen, T, Hänninen, H, Heikkilä, M, Koskiniemi, J, Berg, C-G, Pulliainen, M, Virtanen, I & Ohligschläger, T 2015, 'Effect of Electrochemical Potential on Stress Corrosion Cracking Susceptibility of EN 1.4301 (AISI 304) Austenitic Stainless Steels in Simulated Hot Black Liquor', Corrosion, vol. 71, no. 7, pp. 887-894. https://doi.org/10.5006/1594

TY - JOUR

T1 - Effect of Electrochemical Potential on Stress Corrosion Cracking Susceptibility of EN 1.4301 (AISI 304) Austenitic Stainless Steels in Simulated Hot Black Liquor

AU - Pohjanne, Pekka

AU - Vepsäläinen, Mikko

AU - Saario, Timo

AU - Sipilä, Konsta

AU - Romu, Jyrki

AU - Saukkonen, Tapio

AU - Hänninen, Hannu

AU - Heikkilä, Mikko

AU - Koskiniemi, Juha

AU - Berg, Carl-Gustav

AU - Pulliainen, Martti

AU - Virtanen, Isto

AU - Ohligschläger, Thomas

PY - 2015

Y1 - 2015

N2 - Stress corrosion cracking (SCC) susceptibility of austenitic EN 1.4301 (AISI 304) stainless steel was studied as a function of electrode potential at T = 190°C in 15 g kg-1 NaOH + 150 g kg-1 Na2S containing caustic environment simulating heavy black liquors (HBL) of pulp industry. Severe cracking was detected at corrosion potential and at cathodic potential of -0.11 VMo/MoS2 reference electrode. On the other hand, at anodic potentials of +0.03 to +0.3 VMo/MoS2 no cracking was observed. Thus, SCC of EN 1.4301 steel can potentially be mitigated in HBL environment by applying anodic protection. At the corrosion potential selective dissolution of Fe and slight localized enrichment of Ni and Cr as well as Na, S and O was observed. At anodic potentials Fe was selectively dissolved and marked enrichment of both Ni and Cr as well as Na, S and O took place in the corrosion product. The simultaneous enrichment of Ni and Cr in the corrosion product film was concluded to be the precondition to prevent stress corrosion cracking.

AB - Stress corrosion cracking (SCC) susceptibility of austenitic EN 1.4301 (AISI 304) stainless steel was studied as a function of electrode potential at T = 190°C in 15 g kg-1 NaOH + 150 g kg-1 Na2S containing caustic environment simulating heavy black liquors (HBL) of pulp industry. Severe cracking was detected at corrosion potential and at cathodic potential of -0.11 VMo/MoS2 reference electrode. On the other hand, at anodic potentials of +0.03 to +0.3 VMo/MoS2 no cracking was observed. Thus, SCC of EN 1.4301 steel can potentially be mitigated in HBL environment by applying anodic protection. At the corrosion potential selective dissolution of Fe and slight localized enrichment of Ni and Cr as well as Na, S and O was observed. At anodic potentials Fe was selectively dissolved and marked enrichment of both Ni and Cr as well as Na, S and O took place in the corrosion product. The simultaneous enrichment of Ni and Cr in the corrosion product film was concluded to be the precondition to prevent stress corrosion cracking.

KW - austenitic stainless steel

KW - stress corrosion cracking

KW - selective dissolution

KW - alkaline solution

KW - sodium hydroxide

KW - sodium sulfide

U2 - 10.5006/1594

DO - 10.5006/1594

M3 - Article

SN - 0010-9312

VL - 71

SP - 887

EP - 894

JO - Corrosion

JF - Corrosion

IS - 7

ER -

Effect of Electrochemical Potential on Stress Corrosion Cracking Susceptibility of EN 1.4301 (AISI 304) Austenitic Stainless Steels in Simulated Hot Black Liquor

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Keywords

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