Anomalous corrosion resistance behavior of Mo-containing SS in alkaline media: The role of microstructure

Thiago J. Mesquita; Eric Chauveau; Marc Mantel; Nicole Kinsman; Ricardo P. Nogueira

doi:10.1016/j.matchemphys.2011.01.013

Anomalous corrosion resistance behavior of Mo-containing SS in alkaline media: The role of microstructure

Thiago J. Mesquita, Eric Chauveau, Marc Mantel, Nicole Kinsman, Ricardo P. Nogueira

Chemical and Petroleum Engineering

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

22 Scopus citations

Abstract

Electrochemical and microscopy techniques were used to investigate the role of the microstructure in the corrosion behavior of Mo-containing stainless steel grades in alkaline chloride rich media. It is shown that under certain conditions, Mo containing grades can be even less corrosion resistant than Mo free ones. This anomalous behavior is straightforwardly related to the austenite phase. On the other hand, results show that Mo confirms its clearly beneficial effect in ferritic and duplex steels. Current transient analysis indicated that the protection mechanism in those cases appears to be related to an inhibited pit initiation rather than faster repassivation kinetics.

Original language	British English
Pages (from-to)	602-606
Number of pages	5
Journal	Materials Chemistry and Physics
Volume	126
Issue number	3
DOIs	https://doi.org/10.1016/j.matchemphys.2011.01.013
State	Published - 15 Apr 2011

Keywords

Alloy
Corrosion
Metals
SEM

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10.1016/j.matchemphys.2011.01.013

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title = "Anomalous corrosion resistance behavior of Mo-containing SS in alkaline media: The role of microstructure",

abstract = "Electrochemical and microscopy techniques were used to investigate the role of the microstructure in the corrosion behavior of Mo-containing stainless steel grades in alkaline chloride rich media. It is shown that under certain conditions, Mo containing grades can be even less corrosion resistant than Mo free ones. This anomalous behavior is straightforwardly related to the austenite phase. On the other hand, results show that Mo confirms its clearly beneficial effect in ferritic and duplex steels. Current transient analysis indicated that the protection mechanism in those cases appears to be related to an inhibited pit initiation rather than faster repassivation kinetics.",

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AU - Mesquita, Thiago J.

AU - Chauveau, Eric

AU - Mantel, Marc

AU - Kinsman, Nicole

AU - Nogueira, Ricardo P.

PY - 2011/4/15

Y1 - 2011/4/15

N2 - Electrochemical and microscopy techniques were used to investigate the role of the microstructure in the corrosion behavior of Mo-containing stainless steel grades in alkaline chloride rich media. It is shown that under certain conditions, Mo containing grades can be even less corrosion resistant than Mo free ones. This anomalous behavior is straightforwardly related to the austenite phase. On the other hand, results show that Mo confirms its clearly beneficial effect in ferritic and duplex steels. Current transient analysis indicated that the protection mechanism in those cases appears to be related to an inhibited pit initiation rather than faster repassivation kinetics.

AB - Electrochemical and microscopy techniques were used to investigate the role of the microstructure in the corrosion behavior of Mo-containing stainless steel grades in alkaline chloride rich media. It is shown that under certain conditions, Mo containing grades can be even less corrosion resistant than Mo free ones. This anomalous behavior is straightforwardly related to the austenite phase. On the other hand, results show that Mo confirms its clearly beneficial effect in ferritic and duplex steels. Current transient analysis indicated that the protection mechanism in those cases appears to be related to an inhibited pit initiation rather than faster repassivation kinetics.

KW - Alloy

KW - Corrosion

KW - Metals

KW - SEM

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JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 3

ER -

Anomalous corrosion resistance behavior of Mo-containing SS in alkaline media: The role of microstructure

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Keywords

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