Microelectrochemical investigation of hydrogen absorption and dissolution behavior of MnS inclusions in carbon steel

Izumi Muto; Jun Shinozaki; Tomohiko Omura; Mitsuhiro Numata; Nobuyoshi Hara

doi:10.1149/1.3577749

Microelectrochemical investigation of hydrogen absorption and dissolution behavior of MnS inclusions in carbon steel

Izumi Muto, Jun Shinozaki, Tomohiko Omura, Mitsuhiro Numata, Nobuyoshi Hara

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

Microelectrochemical polarization and silver decoration techniques were performed on the small area with and without MnS inclusions. MnS inclusions were found to be partially dissolved in the potential range from 0.15 to -0.45V (vs. Ag/AgCl, 3.33M KCl) in a boric-borate buffer (pH 8.45) with 10 mM NaCl, whereas the entire surface of the inclusions was dissolved below and above this potential range. Silver deposition occurred only on and around MnS inclusions below -0.2V, which generally corresponded to the stable region of hydrogen sulfide ions. When MnS inclusions partially dissolved, silver deposition occurred only in the dissolved area The dissolution species from MnS inclusions seems to promote hydrogen absorption reaction.

Original language	English
Title of host publication	High Resolution Characterization of Corrosion Processes 2
Pages	9-20
Number of pages	12
Edition	35
DOIs	https://doi.org/10.1149/1.3577749
Publication status	Published - 2011
Event	High Resolution Characterization of Corrosion Processes 2 - 218th ECS Meeting - Las Vegas, NV, United States Duration: 2010 Oct 10 → 2010 Oct 15

Publication series

Name	ECS Transactions
Number	35
Volume	33
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Other

Other	High Resolution Characterization of Corrosion Processes 2 - 218th ECS Meeting
Country	United States
City	Las Vegas, NV
Period	10/10/10 → 10/10/15

ASJC Scopus subject areas

Engineering(all)

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Microelectrochemical investigation of hydrogen absorption and dissolution behavior of MnS inclusions in carbon steel. / Muto, Izumi; Shinozaki, Jun; Omura, Tomohiko; Numata, Mitsuhiro; Hara, Nobuyoshi.

High Resolution Characterization of Corrosion Processes 2. 35. ed. 2011. p. 9-20 (ECS Transactions; Vol. 33, No. 35).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Muto, I, Shinozaki, J, Omura, T, Numata, M & Hara, N 2011, Microelectrochemical investigation of hydrogen absorption and dissolution behavior of MnS inclusions in carbon steel. in High Resolution Characterization of Corrosion Processes 2. 35 edn, ECS Transactions, no. 35, vol. 33, pp. 9-20, High Resolution Characterization of Corrosion Processes 2 - 218th ECS Meeting, Las Vegas, NV, United States, 10/10/10. https://doi.org/10.1149/1.3577749

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abstract = "Microelectrochemical polarization and silver decoration techniques were performed on the small area with and without MnS inclusions. MnS inclusions were found to be partially dissolved in the potential range from 0.15 to -0.45V (vs. Ag/AgCl, 3.33M KCl) in a boric-borate buffer (pH 8.45) with 10 mM NaCl, whereas the entire surface of the inclusions was dissolved below and above this potential range. Silver deposition occurred only on and around MnS inclusions below -0.2V, which generally corresponded to the stable region of hydrogen sulfide ions. When MnS inclusions partially dissolved, silver deposition occurred only in the dissolved area The dissolution species from MnS inclusions seems to promote hydrogen absorption reaction.",

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