Incipient corrosion of FeCrAl alloys in H3BO3- and LiOH-containing pure water at 360 °C and 18.5 MPa

Guanyu Jiang; Donghai Xu; Wanpeng Yang; Lu Liu; Shuwei Guo; Shuzhong Wang

doi:10.1016/j.jnucmat.2021.153299

Incipient corrosion of FeCrAl alloys in H₃BO₃- and LiOH-containing pure water at 360 °C and 18.5 MPa

Guanyu Jiang
, Donghai Xu
, Wanpeng Yang
, Lu Liu
, Shuwei Guo
, Shuzhong Wang

School of Energy and Power Engineering

Xi'an Jiaotong University

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

18 Scopus citations

Abstract

The demand of accident tolerant fuel cladding materials provides a momentum for the development of FeCrAl alloys. To prove its potential, this work studied the corrosion behavior of FeCrAl alloys in H₃BO₃- and LiOH- containing water at 360 °C and 18.5 MPa for 500 h. XPS, XRD, SEM, Raman and AFM analyses were employed to identify oxide films, and the early corrosion mechanism of FeCrAl was discussed. Duplex oxide films were found on the surface of FeCrAl. The inner layer was Fe-Cr-Al spinel, and the outer crystals was dominantly composed of Fe₂O₃, accompanied by Fe₃O₄, FeCr₂O₄, NiFe₂O₄ and Li₂Fe₃O₄. Similar to FeCrAl, Zircaloy-4 showed negligible weight change. However, its surface corrosion was more severe, and the oxides formed were mainly ZrO₂ and Zr₃O_1-X. Li₆Zr₂O₇ and other sub oxides were also observed.

Original language	English
Article number	153299
Journal	Journal of Nuclear Materials
Volume	557
DOIs	https://doi.org/10.1016/j.jnucmat.2021.153299
State	Published - 15 Dec 2021

Keywords

Corrosion
FeCrAl alloys
Water environment
Zircaloy-4

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10.1016/j.jnucmat.2021.153299

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@article{216d9a6aec4a4b629da58648d9a538a3,

title = "Incipient corrosion of FeCrAl alloys in H3BO3- and LiOH-containing pure water at 360 °C and 18.5 MPa",

abstract = "The demand of accident tolerant fuel cladding materials provides a momentum for the development of FeCrAl alloys. To prove its potential, this work studied the corrosion behavior of FeCrAl alloys in H3BO3- and LiOH- containing water at 360 °C and 18.5 MPa for 500 h. XPS, XRD, SEM, Raman and AFM analyses were employed to identify oxide films, and the early corrosion mechanism of FeCrAl was discussed. Duplex oxide films were found on the surface of FeCrAl. The inner layer was Fe-Cr-Al spinel, and the outer crystals was dominantly composed of Fe2O3, accompanied by Fe3O4, FeCr2O4, NiFe2O4 and Li2Fe3O4. Similar to FeCrAl, Zircaloy-4 showed negligible weight change. However, its surface corrosion was more severe, and the oxides formed were mainly ZrO2 and Zr3O1-X. Li6Zr2O7 and other sub oxides were also observed.",

keywords = "Corrosion, FeCrAl alloys, Water environment, Zircaloy-4",

author = "Guanyu Jiang and Donghai Xu and Wanpeng Yang and Lu Liu and Shuwei Guo and Shuzhong Wang",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = dec,

day = "15",

doi = "10.1016/j.jnucmat.2021.153299",

language = "英语",

volume = "557",

journal = "Journal of Nuclear Materials",

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TY - JOUR

T1 - Incipient corrosion of FeCrAl alloys in H3BO3- and LiOH-containing pure water at 360 °C and 18.5 MPa

AU - Jiang, Guanyu

AU - Xu, Donghai

AU - Yang, Wanpeng

AU - Liu, Lu

AU - Guo, Shuwei

AU - Wang, Shuzhong

PY - 2021/12/15

Y1 - 2021/12/15

N2 - The demand of accident tolerant fuel cladding materials provides a momentum for the development of FeCrAl alloys. To prove its potential, this work studied the corrosion behavior of FeCrAl alloys in H3BO3- and LiOH- containing water at 360 °C and 18.5 MPa for 500 h. XPS, XRD, SEM, Raman and AFM analyses were employed to identify oxide films, and the early corrosion mechanism of FeCrAl was discussed. Duplex oxide films were found on the surface of FeCrAl. The inner layer was Fe-Cr-Al spinel, and the outer crystals was dominantly composed of Fe2O3, accompanied by Fe3O4, FeCr2O4, NiFe2O4 and Li2Fe3O4. Similar to FeCrAl, Zircaloy-4 showed negligible weight change. However, its surface corrosion was more severe, and the oxides formed were mainly ZrO2 and Zr3O1-X. Li6Zr2O7 and other sub oxides were also observed.

AB - The demand of accident tolerant fuel cladding materials provides a momentum for the development of FeCrAl alloys. To prove its potential, this work studied the corrosion behavior of FeCrAl alloys in H3BO3- and LiOH- containing water at 360 °C and 18.5 MPa for 500 h. XPS, XRD, SEM, Raman and AFM analyses were employed to identify oxide films, and the early corrosion mechanism of FeCrAl was discussed. Duplex oxide films were found on the surface of FeCrAl. The inner layer was Fe-Cr-Al spinel, and the outer crystals was dominantly composed of Fe2O3, accompanied by Fe3O4, FeCr2O4, NiFe2O4 and Li2Fe3O4. Similar to FeCrAl, Zircaloy-4 showed negligible weight change. However, its surface corrosion was more severe, and the oxides formed were mainly ZrO2 and Zr3O1-X. Li6Zr2O7 and other sub oxides were also observed.

KW - Corrosion

KW - FeCrAl alloys

KW - Water environment

KW - Zircaloy-4

UR - https://www.scopus.com/pages/publications/85115134241

U2 - 10.1016/j.jnucmat.2021.153299

DO - 10.1016/j.jnucmat.2021.153299

M3 - 文章

AN - SCOPUS:85115134241

SN - 0022-3115

VL - 557

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

M1 - 153299

ER -

Incipient corrosion of FeCrAl alloys in H₃BO₃- and LiOH-containing pure water at 360 °C and 18.5 MPa

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Keywords

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