Corrosion behavior of 14Cr ODS steel in supercritical water: The influence of substituting Y2O3 with Y2Ti2O7 nanoparticles

Haozhi Zhao; Tong Liu; Zhonglian Bai; Linbo Wang; Wenhua Gao; Lefu Zhang

doi:10.1016/j.corsci.2019.108272

Corrosion behavior of 14Cr ODS steel in supercritical water: The influence of substituting Y₂O₃ with Y₂Ti₂O₇ nanoparticles

Haozhi Zhao
, Tong Liu^*
, Zhonglian Bai
, Linbo Wang
, Wenhua Gao
, Lefu Zhang

^*Corresponding author for this work

School of Materials Science and Engineering

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

46 Scopus citations

Abstract

14Cr-4.5Al ODS steels were prepared by adding Y₂Ti₂O₇ and Y₂O₃ nanoparticles respectively. Bilayer-structure corrosion scales were formed while the Y₂Ti₂O₇-ODS steel showed a lower mass gain of 108.1 mg/dm² in SCW for 1500 h. Compared with Y₂O₃, Y₂Ti₂O₇ with finer size and higher number density exhibited more effective hindrance impacts on the diffusion of ions. Furthermore, adding Y₂Ti₂O₇ in the ODS steel can provide more zero valent Al to form alumina film through inhibiting the formation of coarse Y-Al-O particles. Our work demonstrates that substituting Y₂O₃ with Y₂Ti₂O₇ is an effective route to improve the corrosion resistance of Al-adding ODS steels.

Original language	English
Article number	108272
Journal	Corrosion Science
Volume	163
DOIs	https://doi.org/10.1016/j.corsci.2019.108272
State	Published - Feb 2020

Keywords

A. ODS steel
B. SEM
B. X-ray diffraction
C. Oxidation
C. Supercritical water

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10.1016/j.corsci.2019.108272

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@article{25d953513b43417b861e3bd0d880ca92,

title = "Corrosion behavior of 14Cr ODS steel in supercritical water: The influence of substituting Y2O3 with Y2Ti2O7 nanoparticles",

abstract = "14Cr-4.5Al ODS steels were prepared by adding Y2Ti2O7 and Y2O3 nanoparticles respectively. Bilayer-structure corrosion scales were formed while the Y2Ti2O7-ODS steel showed a lower mass gain of 108.1 mg/dm2 in SCW for 1500 h. Compared with Y2O3, Y2Ti2O7 with finer size and higher number density exhibited more effective hindrance impacts on the diffusion of ions. Furthermore, adding Y2Ti2O7 in the ODS steel can provide more zero valent Al to form alumina film through inhibiting the formation of coarse Y-Al-O particles. Our work demonstrates that substituting Y2O3 with Y2Ti2O7 is an effective route to improve the corrosion resistance of Al-adding ODS steels.",

keywords = "A. ODS steel, B. SEM, B. X-ray diffraction, C. Oxidation, C. Supercritical water",

author = "Haozhi Zhao and Tong Liu and Zhonglian Bai and Linbo Wang and Wenhua Gao and Lefu Zhang",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2020",

month = feb,

doi = "10.1016/j.corsci.2019.108272",

language = "英语",

volume = "163",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Corrosion behavior of 14Cr ODS steel in supercritical water

T2 - The influence of substituting Y2O3 with Y2Ti2O7 nanoparticles

AU - Zhao, Haozhi

AU - Liu, Tong

AU - Bai, Zhonglian

AU - Wang, Linbo

AU - Gao, Wenhua

AU - Zhang, Lefu

PY - 2020/2

Y1 - 2020/2

N2 - 14Cr-4.5Al ODS steels were prepared by adding Y2Ti2O7 and Y2O3 nanoparticles respectively. Bilayer-structure corrosion scales were formed while the Y2Ti2O7-ODS steel showed a lower mass gain of 108.1 mg/dm2 in SCW for 1500 h. Compared with Y2O3, Y2Ti2O7 with finer size and higher number density exhibited more effective hindrance impacts on the diffusion of ions. Furthermore, adding Y2Ti2O7 in the ODS steel can provide more zero valent Al to form alumina film through inhibiting the formation of coarse Y-Al-O particles. Our work demonstrates that substituting Y2O3 with Y2Ti2O7 is an effective route to improve the corrosion resistance of Al-adding ODS steels.

AB - 14Cr-4.5Al ODS steels were prepared by adding Y2Ti2O7 and Y2O3 nanoparticles respectively. Bilayer-structure corrosion scales were formed while the Y2Ti2O7-ODS steel showed a lower mass gain of 108.1 mg/dm2 in SCW for 1500 h. Compared with Y2O3, Y2Ti2O7 with finer size and higher number density exhibited more effective hindrance impacts on the diffusion of ions. Furthermore, adding Y2Ti2O7 in the ODS steel can provide more zero valent Al to form alumina film through inhibiting the formation of coarse Y-Al-O particles. Our work demonstrates that substituting Y2O3 with Y2Ti2O7 is an effective route to improve the corrosion resistance of Al-adding ODS steels.

KW - A. ODS steel

KW - B. SEM

KW - B. X-ray diffraction

KW - C. Oxidation

KW - C. Supercritical water

UR - https://www.scopus.com/pages/publications/85075471606

U2 - 10.1016/j.corsci.2019.108272

DO - 10.1016/j.corsci.2019.108272

M3 - 文章

AN - SCOPUS:85075471606

SN - 0010-938X

VL - 163

JO - Corrosion Science

JF - Corrosion Science

M1 - 108272

ER -

Corrosion behavior of 14Cr ODS steel in supercritical water: The influence of substituting Y₂O₃ with Y₂Ti₂O₇ nanoparticles

Abstract

Keywords

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