Improving the corrosion resistance of MgZn1.2GdxZr0.18 (x =0, 0.8, 1.4, 2.0) alloys via Gd additions

Siqi Yin; Wenchao Duan; Wenhong  Liu; Liang Wu; Jiaxin Bao; Jiamin  Yu; Liang Li; Zhong Zhao; Jianzhong Cui; Zhiqiang Zhang

doi:10.1016/j.corsci.2020.108962

Improving the corrosion resistance of MgZn1.2GdxZr0.18 (x =0, 0.8, 1.4, 2.0) alloys via Gd additions

Siqi Yin, Wenchao Duan, Wenhong Liu, Liang Wu, Jiaxin Bao, Jiamin Yu, Liang Li, Zhong Zhao, Jianzhong Cui, Zhiqiang Zhang

School of Physics, Engineering & Computer Science

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

9 Citations (Scopus)

22 Downloads (Pure)

Abstract

Effects of Gd addition on microstructure, corrosion behavior and mechanism of cast and extruded MgZn1.2GdxZr0.18 alloys are investigated through microstructure observation, weight loss and electrochemical tests. Increasing Gd from 0 to 2.0 at.%, grains are refined, MgZn2 phase, W-phase and X-phase are formed successively, and basal texture intensity is decreased. The significantly decreased grain size by extrusion and Gd addition induces formation of protective Gd2O3 and MgO layer. The extruded MgZn1.2Gd2.0Zr0.18 alloy shows decreased corrosion rate of 3.72 ± 0.36 mm/year, owing to fine and homogeneous microstructure, dual-role (micro-anode and barrier) of X-phase, compact oxidation layer and basal crystallographic texture.

Original language	English
Article number	108962
Journal	Corrosion Science
Volume	177
Early online date	20 Aug 2020
DOIs	https://doi.org/10.1016/j.corsci.2020.108962
Publication status	Published - 1 Dec 2020

Keywords

A. Magnesium
A. Rare earth elements
B. Polarization
B. XPS
C. Intergranular corrosion
C. Passive films

Access to Document

10.1016/j.corsci.2020.108962

Revised_manuscript_2_1_1_Accepted author manuscript, 734 KBLicence: CC BY-NC-ND

Cite this

@article{c431960a2b5244c58f05e213f8ae31e4,

title = "Improving the corrosion resistance of MgZn1.2GdxZr0.18 (x =0, 0.8, 1.4, 2.0) alloys via Gd additions",

abstract = "Effects of Gd addition on microstructure, corrosion behavior and mechanism of cast and extruded MgZn1.2GdxZr0.18 alloys are investigated through microstructure observation, weight loss and electrochemical tests. Increasing Gd from 0 to 2.0 at.%, grains are refined, MgZn2 phase, W-phase and X-phase are formed successively, and basal texture intensity is decreased. The significantly decreased grain size by extrusion and Gd addition induces formation of protective Gd2O3 and MgO layer. The extruded MgZn1.2Gd2.0Zr0.18 alloy shows decreased corrosion rate of 3.72 ± 0.36 mm/year, owing to fine and homogeneous microstructure, dual-role (micro-anode and barrier) of X-phase, compact oxidation layer and basal crystallographic texture.",

keywords = "A. Magnesium, A. Rare earth elements, B. Polarization, B. XPS, C. Intergranular corrosion, C. Passive films",

author = "Siqi Yin and Wenchao Duan and Wenhong Liu and Liang Wu and Jiaxin Bao and Jiamin Yu and Liang Li and Zhong Zhao and Jianzhong Cui and Zhiqiang Zhang",

note = "Funding Information: This research was financially supported by the National Key Research and Development Program of China (Grant No. 2016YFB0301101 ), the National Natural Science Foundation of China (Grant No. 51971054 ) and the Fundamental Research Funds for the Central Universities (Grant Nos. N180904006 and N2009006 ). Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = dec,

day = "1",

doi = "10.1016/j.corsci.2020.108962",

language = "English",

volume = "177",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier",

}

TY - JOUR

T1 - Improving the corrosion resistance of MgZn1.2GdxZr0.18 (x =0, 0.8, 1.4, 2.0) alloys via Gd additions

AU - Yin, Siqi

AU - Duan, Wenchao

AU - Liu, Wenhong

AU - Wu, Liang

AU - Bao, Jiaxin

AU - Yu, Jiamin

AU - Li, Liang

AU - Zhao, Zhong

AU - Cui, Jianzhong

AU - Zhang, Zhiqiang

N1 - Funding Information: This research was financially supported by the National Key Research and Development Program of China (Grant No. 2016YFB0301101 ), the National Natural Science Foundation of China (Grant No. 51971054 ) and the Fundamental Research Funds for the Central Universities (Grant Nos. N180904006 and N2009006 ). Publisher Copyright: © 2020 Elsevier Ltd

PY - 2020/12/1

Y1 - 2020/12/1

N2 - Effects of Gd addition on microstructure, corrosion behavior and mechanism of cast and extruded MgZn1.2GdxZr0.18 alloys are investigated through microstructure observation, weight loss and electrochemical tests. Increasing Gd from 0 to 2.0 at.%, grains are refined, MgZn2 phase, W-phase and X-phase are formed successively, and basal texture intensity is decreased. The significantly decreased grain size by extrusion and Gd addition induces formation of protective Gd2O3 and MgO layer. The extruded MgZn1.2Gd2.0Zr0.18 alloy shows decreased corrosion rate of 3.72 ± 0.36 mm/year, owing to fine and homogeneous microstructure, dual-role (micro-anode and barrier) of X-phase, compact oxidation layer and basal crystallographic texture.

AB - Effects of Gd addition on microstructure, corrosion behavior and mechanism of cast and extruded MgZn1.2GdxZr0.18 alloys are investigated through microstructure observation, weight loss and electrochemical tests. Increasing Gd from 0 to 2.0 at.%, grains are refined, MgZn2 phase, W-phase and X-phase are formed successively, and basal texture intensity is decreased. The significantly decreased grain size by extrusion and Gd addition induces formation of protective Gd2O3 and MgO layer. The extruded MgZn1.2Gd2.0Zr0.18 alloy shows decreased corrosion rate of 3.72 ± 0.36 mm/year, owing to fine and homogeneous microstructure, dual-role (micro-anode and barrier) of X-phase, compact oxidation layer and basal crystallographic texture.

KW - A. Magnesium

KW - A. Rare earth elements

KW - B. Polarization

KW - B. XPS

KW - C. Intergranular corrosion

KW - C. Passive films

UR - http://www.scopus.com/inward/record.url?scp=85090110957&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2020.108962

DO - 10.1016/j.corsci.2020.108962

M3 - Article

SN - 0010-938X

VL - 177

JO - Corrosion Science

JF - Corrosion Science

M1 - 108962

ER -

Improving the corrosion resistance of MgZn1.2GdxZr0.18 (x =0, 0.8, 1.4, 2.0) alloys via Gd additions

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this