Performance of NiB inhibitor for PbSCC of alloy 600 in Pb-contaminated water and caustic solutions

Joung Soo Kim; Yong Sun Yi; Oh Chul Kwon; Mi Ae Kim; Hong Pyo Kim

doi:10.3365/met.mat.2008.06.341

Performance of NiB inhibitor for PbSCC of alloy 600 in Pb-contaminated water and caustic solutions

Joung Soo Kim, Yong Sun Yi, Oh Chul Kwon, Mi Ae Kim, Hong Pyo Kim

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

2 Scopus citations

Abstract

Nickel-based iron-chromium alloys are used as steam generator (SG) tubing materials in nuclear power plants (NPPs) but experience intergranular stress corrosion cracking (IGSCC) and lead stress corrosion cracking (PbSCC) due to the harsh operating conditions of NPPs. In order to improve the integrity of SGs, many studies have sought suitable inhibitors for IGSCC, while those for PbSCC have been sought to a limited extent. In this study, the performance of nickel boride (NiB) as an inhibitor for PbSCC was evaluated. Nickel boride has been shown to be a good inhibitor for IGSCC of Alloy (or Inconel) 600 in a caustic aqueous solution containing no lead (Pb). No significant SCC was observed to occur in Alloy 600 tested in pure water under the slow strain rate test (SSRT) condition in this study. A mixed mode of IGSCC and TGSCC, however, occurred relatively easily in Alloy 600 tested in pure water containing lead oxide (PbO) at 315°C. The susceptibility of Alloy 600 to SCC decreased with the addition of NiB, implying that NiB can be used as an inhibitor for PbSCC in Pb-contaminated water.

Original language	British English
Pages (from-to)	341-346
Number of pages	6
Journal	Metals and Materials International
Volume	14
Issue number	3
DOIs	https://doi.org/10.3365/met.mat.2008.06.341
State	Published - Jun 2008

Keywords

Alloy (or inconel) 600 HTMA PbSCC
IGSCC
NaOH
NiB
Pure water
Steam generator tube
TGSCC

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.3365/met.mat.2008.06.341

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title = "Performance of NiB inhibitor for PbSCC of alloy 600 in Pb-contaminated water and caustic solutions",

abstract = "Nickel-based iron-chromium alloys are used as steam generator (SG) tubing materials in nuclear power plants (NPPs) but experience intergranular stress corrosion cracking (IGSCC) and lead stress corrosion cracking (PbSCC) due to the harsh operating conditions of NPPs. In order to improve the integrity of SGs, many studies have sought suitable inhibitors for IGSCC, while those for PbSCC have been sought to a limited extent. In this study, the performance of nickel boride (NiB) as an inhibitor for PbSCC was evaluated. Nickel boride has been shown to be a good inhibitor for IGSCC of Alloy (or Inconel) 600 in a caustic aqueous solution containing no lead (Pb). No significant SCC was observed to occur in Alloy 600 tested in pure water under the slow strain rate test (SSRT) condition in this study. A mixed mode of IGSCC and TGSCC, however, occurred relatively easily in Alloy 600 tested in pure water containing lead oxide (PbO) at 315°C. The susceptibility of Alloy 600 to SCC decreased with the addition of NiB, implying that NiB can be used as an inhibitor for PbSCC in Pb-contaminated water.",

keywords = "Alloy (or inconel) 600 HTMA PbSCC, IGSCC, NaOH, NiB, Pure water, Steam generator tube, TGSCC",

author = "Kim, {Joung Soo} and Yi, {Yong Sun} and Kwon, {Oh Chul} and Kim, {Mi Ae} and Kim, {Hong Pyo}",

note = "Funding Information: This work was carried out as a part of the Assessment of Corrosion Characteristics and Development of Remedial Technology in Nuclear Materials Project of the Nuclear R&D Program financially supported by the Ministry of Science and Technology (MOST) of Korea.",

year = "2008",

month = jun,

doi = "10.3365/met.mat.2008.06.341",

language = "British English",

volume = "14",

pages = "341--346",

journal = "Metals and Materials International",

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publisher = "Korean Institute of Metals and Materials",

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TY - JOUR

T1 - Performance of NiB inhibitor for PbSCC of alloy 600 in Pb-contaminated water and caustic solutions

AU - Kim, Joung Soo

AU - Yi, Yong Sun

AU - Kwon, Oh Chul

AU - Kim, Mi Ae

AU - Kim, Hong Pyo

N1 - Funding Information: This work was carried out as a part of the Assessment of Corrosion Characteristics and Development of Remedial Technology in Nuclear Materials Project of the Nuclear R&D Program financially supported by the Ministry of Science and Technology (MOST) of Korea.

PY - 2008/6

Y1 - 2008/6

N2 - Nickel-based iron-chromium alloys are used as steam generator (SG) tubing materials in nuclear power plants (NPPs) but experience intergranular stress corrosion cracking (IGSCC) and lead stress corrosion cracking (PbSCC) due to the harsh operating conditions of NPPs. In order to improve the integrity of SGs, many studies have sought suitable inhibitors for IGSCC, while those for PbSCC have been sought to a limited extent. In this study, the performance of nickel boride (NiB) as an inhibitor for PbSCC was evaluated. Nickel boride has been shown to be a good inhibitor for IGSCC of Alloy (or Inconel) 600 in a caustic aqueous solution containing no lead (Pb). No significant SCC was observed to occur in Alloy 600 tested in pure water under the slow strain rate test (SSRT) condition in this study. A mixed mode of IGSCC and TGSCC, however, occurred relatively easily in Alloy 600 tested in pure water containing lead oxide (PbO) at 315°C. The susceptibility of Alloy 600 to SCC decreased with the addition of NiB, implying that NiB can be used as an inhibitor for PbSCC in Pb-contaminated water.

AB - Nickel-based iron-chromium alloys are used as steam generator (SG) tubing materials in nuclear power plants (NPPs) but experience intergranular stress corrosion cracking (IGSCC) and lead stress corrosion cracking (PbSCC) due to the harsh operating conditions of NPPs. In order to improve the integrity of SGs, many studies have sought suitable inhibitors for IGSCC, while those for PbSCC have been sought to a limited extent. In this study, the performance of nickel boride (NiB) as an inhibitor for PbSCC was evaluated. Nickel boride has been shown to be a good inhibitor for IGSCC of Alloy (or Inconel) 600 in a caustic aqueous solution containing no lead (Pb). No significant SCC was observed to occur in Alloy 600 tested in pure water under the slow strain rate test (SSRT) condition in this study. A mixed mode of IGSCC and TGSCC, however, occurred relatively easily in Alloy 600 tested in pure water containing lead oxide (PbO) at 315°C. The susceptibility of Alloy 600 to SCC decreased with the addition of NiB, implying that NiB can be used as an inhibitor for PbSCC in Pb-contaminated water.

KW - Alloy (or inconel) 600 HTMA PbSCC

KW - IGSCC

KW - NaOH

KW - NiB

KW - Pure water

KW - Steam generator tube

KW - TGSCC

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U2 - 10.3365/met.mat.2008.06.341

DO - 10.3365/met.mat.2008.06.341

M3 - Article

AN - SCOPUS:47049119476

SN - 1225-9438

VL - 14

SP - 341

EP - 346

JO - Metals and Materials International

JF - Metals and Materials International

IS - 3

ER -

Performance of NiB inhibitor for PbSCC of alloy 600 in Pb-contaminated water and caustic solutions

Abstract

Keywords

UN SDGs

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