Microelectrochemical investigation of pit initiation site on austenitic cast stainless steel

Asako Otake; Izumi Muto; Aya Chiba; Yu Sugawara; Nobuyoshi Hara

doi:10.1149/06928.0001ecst

Microelectrochemical investigation of pit initiation site on austenitic cast stainless steel

Asako Otake, Izumi Muto, Aya Chiba, Yu Sugawara, Nobuyoshi Hara

ENG - Materials Science

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

1 Citation (Scopus)

Abstract

A microelectrochemical technique was applied to ascertain the pit initiation behavior at the δ/γ-grain boundary of Type 304L austenitic cast stainless steel in 1 M NaCl solution. The size of electrode area was changed from ca. 0.01 mm² (100 μm×100 μm) to ca. 100 mm² (10 mm×10 mm). The density for pit initiation site of Type 304L cast stainless steel was estimated to be around 1 site/mm². From anodic polarization, transmission electron microscopy, and energy-dispersive X-ray fluorescence analysis, P-and S-segregation was confirmed to be associated with the pit initiation at δ/γ-grain boundary. In addition to this, Si-segregation or Si-containing inclusion at the boundaries was thought to be a factor affecting the pit initiation at the δ/γ-grain boundary.

Original language	English
Title of host publication	Critical Factors in Localized Corrosion 8
Editors	S. Fujimoto, G. Frankel, E. Tada, J. Kish
Publisher	Electrochemical Society Inc.
Pages	1-11
Number of pages	11
Edition	28
ISBN (Electronic)	9781607685395
DOIs	https://doi.org/10.1149/06928.0001ecst
Publication status	Published - 2015
Event	Symposium on Critical Factors in Localized Corrosion 8 - 228th ECS Meeting - Phoenix, United States Duration: 2015 Oct 11 → 2015 Oct 15

Publication series

Name	ECS Transactions
Number	28
Volume	69
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Conference

Conference	Symposium on Critical Factors in Localized Corrosion 8 - 228th ECS Meeting
Country/Territory	United States
City	Phoenix
Period	15/10/11 → 15/10/15

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10.1149/06928.0001ecst

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Otake, A., Muto, I., Chiba, A., Sugawara, Y., & Hara, N. (2015). Microelectrochemical investigation of pit initiation site on austenitic cast stainless steel. In S. Fujimoto, G. Frankel, E. Tada, & J. Kish (Eds.), Critical Factors in Localized Corrosion 8 (28 ed., pp. 1-11). (ECS Transactions; Vol. 69, No. 28). Electrochemical Society Inc.. https://doi.org/10.1149/06928.0001ecst

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title = "Microelectrochemical investigation of pit initiation site on austenitic cast stainless steel",

abstract = "A microelectrochemical technique was applied to ascertain the pit initiation behavior at the δ/γ-grain boundary of Type 304L austenitic cast stainless steel in 1 M NaCl solution. The size of electrode area was changed from ca. 0.01 mm2 (100 μm×100 μm) to ca. 100 mm2 (10 mm×10 mm). The density for pit initiation site of Type 304L cast stainless steel was estimated to be around 1 site/mm2. From anodic polarization, transmission electron microscopy, and energy-dispersive X-ray fluorescence analysis, P-and S-segregation was confirmed to be associated with the pit initiation at δ/γ-grain boundary. In addition to this, Si-segregation or Si-containing inclusion at the boundaries was thought to be a factor affecting the pit initiation at the δ/γ-grain boundary.",

author = "Asako Otake and Izumi Muto and Aya Chiba and Yu Sugawara and Nobuyoshi Hara",

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language = "English",

series = "ECS Transactions",

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Otake, A, Muto, I, Chiba, A, Sugawara, Y & Hara, N 2015, Microelectrochemical investigation of pit initiation site on austenitic cast stainless steel. in S Fujimoto, G Frankel, E Tada & J Kish (eds), Critical Factors in Localized Corrosion 8. 28 edn, ECS Transactions, no. 28, vol. 69, Electrochemical Society Inc., pp. 1-11, Symposium on Critical Factors in Localized Corrosion 8 - 228th ECS Meeting, Phoenix, United States, 15/10/11. https://doi.org/10.1149/06928.0001ecst

Microelectrochemical investigation of pit initiation site on austenitic cast stainless steel. / Otake, Asako; Muto, Izumi; Chiba, Aya et al.
Critical Factors in Localized Corrosion 8. ed. / S. Fujimoto; G. Frankel; E. Tada; J. Kish. 28. ed. Electrochemical Society Inc., 2015. p. 1-11 (ECS Transactions; Vol. 69, No. 28).

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

TY - GEN

T1 - Microelectrochemical investigation of pit initiation site on austenitic cast stainless steel

AU - Otake, Asako

AU - Muto, Izumi

AU - Chiba, Aya

AU - Sugawara, Yu

AU - Hara, Nobuyoshi

N1 - Publisher Copyright: © The Electrochemical Society.

PY - 2015

Y1 - 2015

N2 - A microelectrochemical technique was applied to ascertain the pit initiation behavior at the δ/γ-grain boundary of Type 304L austenitic cast stainless steel in 1 M NaCl solution. The size of electrode area was changed from ca. 0.01 mm2 (100 μm×100 μm) to ca. 100 mm2 (10 mm×10 mm). The density for pit initiation site of Type 304L cast stainless steel was estimated to be around 1 site/mm2. From anodic polarization, transmission electron microscopy, and energy-dispersive X-ray fluorescence analysis, P-and S-segregation was confirmed to be associated with the pit initiation at δ/γ-grain boundary. In addition to this, Si-segregation or Si-containing inclusion at the boundaries was thought to be a factor affecting the pit initiation at the δ/γ-grain boundary.

AB - A microelectrochemical technique was applied to ascertain the pit initiation behavior at the δ/γ-grain boundary of Type 304L austenitic cast stainless steel in 1 M NaCl solution. The size of electrode area was changed from ca. 0.01 mm2 (100 μm×100 μm) to ca. 100 mm2 (10 mm×10 mm). The density for pit initiation site of Type 304L cast stainless steel was estimated to be around 1 site/mm2. From anodic polarization, transmission electron microscopy, and energy-dispersive X-ray fluorescence analysis, P-and S-segregation was confirmed to be associated with the pit initiation at δ/γ-grain boundary. In addition to this, Si-segregation or Si-containing inclusion at the boundaries was thought to be a factor affecting the pit initiation at the δ/γ-grain boundary.

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BT - Critical Factors in Localized Corrosion 8

A2 - Fujimoto, S.

A2 - Frankel, G.

A2 - Tada, E.

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PB - Electrochemical Society Inc.

T2 - Symposium on Critical Factors in Localized Corrosion 8 - 228th ECS Meeting

Y2 - 11 October 2015 through 15 October 2015

ER -

Microelectrochemical investigation of pit initiation site on austenitic cast stainless steel

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