Influence of rare earth metals on mechanisms of localised corrosion induced by inclusions in Zr-Ti deoxidised low alloy steel

Chao Liu; Zaihao Jiang; Jinbin Zhao; Xuequn Cheng; Zhiyong Liu; Dawei Zhang; Xiaogang Li

doi:10.1016/j.corsci.2020.108463

Influence of rare earth metals on mechanisms of localised corrosion induced by inclusions in Zr-Ti deoxidised low alloy steel

Chao Liu
, Zaihao Jiang
, Jinbin Zhao
, Xuequn Cheng
, Zhiyong Liu
, Dawei Zhang
, Xiaogang Li^*

^*此作品的通讯作者

University of Science and Technology Beijing
Nanjing Iron and Steel Co., Ltd.

科研成果: 期刊稿件 › 文章 › 同行评审

100 引用（Scopus）

摘要

The influence of rare earth addition on the mechanism of localised corrosion induced by inclusions in Zr-Ti deoxidised steel was investigated in a simulated marine environment. Inclusion size and composition changed after rare earth addition, profoundly affecting the localised corrosion. Current sensing atomic force microscopy results showed that no galvanic couple formed between inclusions and matrix owing to the insulating property of different inclusions. Matrix dissolution resulting from the microcrevices and lattice distortion surrounding ZrO₂-Ti₂O₃-Al₂O₃ inclusions initiated localised corrosion in Zr-Ti deoxidised steel. After adding RE, localised corrosion was induced by dissolution of the (RE)₂O₂S-(RE)_xS_y part of the inclusion.

源语言	英语
文章编号	108463
期刊	Corrosion Science
卷	166
DOI	https://doi.org/10.1016/j.corsci.2020.108463
出版状态	已出版 - 15 4月 2020
已对外发布	是

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可持续发展目标 14 水下生物

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10.1016/j.corsci.2020.108463

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@article{9670cc8fcaa94b13bfca23af1f56a5a9,

title = "Influence of rare earth metals on mechanisms of localised corrosion induced by inclusions in Zr-Ti deoxidised low alloy steel",

abstract = "The influence of rare earth addition on the mechanism of localised corrosion induced by inclusions in Zr-Ti deoxidised steel was investigated in a simulated marine environment. Inclusion size and composition changed after rare earth addition, profoundly affecting the localised corrosion. Current sensing atomic force microscopy results showed that no galvanic couple formed between inclusions and matrix owing to the insulating property of different inclusions. Matrix dissolution resulting from the microcrevices and lattice distortion surrounding ZrO2-Ti2O3-Al2O3 inclusions initiated localised corrosion in Zr-Ti deoxidised steel. After adding RE, localised corrosion was induced by dissolution of the (RE)2O2S-(RE)xSy part of the inclusion.",

keywords = "AFM (B), Atmospheric corrosion (C), Low alloy steel (A), Pitting corrosion (C), SEM (B)",

author = "Chao Liu and Zaihao Jiang and Jinbin Zhao and Xuequn Cheng and Zhiyong Liu and Dawei Zhang and Xiaogang Li",

note = "Publisher Copyright: {\textcopyright} 2020",

year = "2020",

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doi = "10.1016/j.corsci.2020.108463",

language = "英语",

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TY - JOUR

T1 - Influence of rare earth metals on mechanisms of localised corrosion induced by inclusions in Zr-Ti deoxidised low alloy steel

AU - Liu, Chao

AU - Jiang, Zaihao

AU - Zhao, Jinbin

AU - Cheng, Xuequn

AU - Liu, Zhiyong

AU - Zhang, Dawei

AU - Li, Xiaogang

PY - 2020/4/15

Y1 - 2020/4/15

N2 - The influence of rare earth addition on the mechanism of localised corrosion induced by inclusions in Zr-Ti deoxidised steel was investigated in a simulated marine environment. Inclusion size and composition changed after rare earth addition, profoundly affecting the localised corrosion. Current sensing atomic force microscopy results showed that no galvanic couple formed between inclusions and matrix owing to the insulating property of different inclusions. Matrix dissolution resulting from the microcrevices and lattice distortion surrounding ZrO2-Ti2O3-Al2O3 inclusions initiated localised corrosion in Zr-Ti deoxidised steel. After adding RE, localised corrosion was induced by dissolution of the (RE)2O2S-(RE)xSy part of the inclusion.

AB - The influence of rare earth addition on the mechanism of localised corrosion induced by inclusions in Zr-Ti deoxidised steel was investigated in a simulated marine environment. Inclusion size and composition changed after rare earth addition, profoundly affecting the localised corrosion. Current sensing atomic force microscopy results showed that no galvanic couple formed between inclusions and matrix owing to the insulating property of different inclusions. Matrix dissolution resulting from the microcrevices and lattice distortion surrounding ZrO2-Ti2O3-Al2O3 inclusions initiated localised corrosion in Zr-Ti deoxidised steel. After adding RE, localised corrosion was induced by dissolution of the (RE)2O2S-(RE)xSy part of the inclusion.

KW - AFM (B)

KW - Atmospheric corrosion (C)

KW - Low alloy steel (A)

KW - Pitting corrosion (C)

KW - SEM (B)

UR - https://www.scopus.com/pages/publications/85079182185

U2 - 10.1016/j.corsci.2020.108463

DO - 10.1016/j.corsci.2020.108463

M3 - 文章

AN - SCOPUS:85079182185

SN - 0010-938X

VL - 166

JO - Corrosion Science

JF - Corrosion Science

M1 - 108463

ER -

Influence of rare earth metals on mechanisms of localised corrosion induced by inclusions in Zr-Ti deoxidised low alloy steel

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