Effect of Yttrium Addition on Corrosion Resistance of Zr-based Bulk Metallic Glasses in NaCl Solution

被引：12

作者：

Yu, Liusi ^{[1
]}

Tang, Junlei ^{[1
]}

Qiao, Jichao ^{[2
]}

Wang, Hu ^{[3
]}

Wang, Yingying ^{[1
]}

Apreutesei, Mihai ^{[4
]}

Chamas, Mohammad ^{[1
]}

Duan, Ming ^{[1
]}

机构：

[1] Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China

[2] Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Shaanxi, Peoples R China

[3] Southwest Petr Univ, Sch Mat Sci & Engn, Chengdu 610500, Sichuan, Peoples R China

[4] Univ Lyon, CNRS, Ecole Cent Lyon, INL,UMR5270, F-69134 Ecully, France

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2017年 / 12卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Zr-based bulk metallic glasses; Pitting corrosion resistance; Yttrium; Electrochemical measurements; XPS; MECHANICAL-PROPERTIES; ELECTROCHEMICAL-BEHAVIOR; STAINLESS-STEEL; FORMING ABILITY; ALLOYS; RELAXATION;

D O I：

10.20964/2017.07.47

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This study investigated the effect of yttrium addition on the electrochemical properties of (Zr58Nb3Cu16Ni13Al10)(100-x)Y-x (x = 0, 0.5, 2.5 at.%) bulk metallic glasses in 3.5 wt.% NaCl solution. Electrochemical measurements, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) were employed. Zr-based bulk metallic glasses exhibited good corrosion resistance. It was ascribed to the formation of a protective passive film which was composed of ZrO2, Al2O3 and a few oxides of other alloying elements, i.e. Y2O3. However, the breakdown potential decreased due to the addition of yttrium. Electrochemical impedance spectroscopy (EIS) suggested that yttrium addition could decrease the charge transfer resistance. That is, the addition of yttrium was harmful to the corrosion resistance of this Zr-based bulk metallic glass in 3.5 wt.% NaCl solution. It was attributed to the precipitation of Cu-Y richly quasi-crystal phase owing to yttrium addition, which caused inhomogeneous distribution of copper and yttrium in microstructure.

引用

页码：6506 / 6519

页数：14

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