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^*

^*Corresponding author for this work

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

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

100 Scopus citations

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)_xS_y part of the inclusion.

Original language	English
Article number	108463
Journal	Corrosion Science
Volume	166
DOIs	https://doi.org/10.1016/j.corsci.2020.108463
State	Published - 15 Apr 2020
Externally published	Yes

UN SDGs

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

SDG 14 Life Below Water

Keywords

AFM (B)
Atmospheric corrosion (C)
Low alloy steel (A)
Pitting corrosion (C)
SEM (B)

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10.1016/j.corsci.2020.108463

Cite this

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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",

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

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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

Abstract

UN SDGs

Keywords

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