Influence of rare earth Y on the corrosion behavior of as-cast AZ91 alloy

被引：141

作者：

Luo, T. J. ^{[1
]}

Yang, Y. S. ^{[1
]}

Li, Y. J. ^{[1
]}

Dong, X. G. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2009年 / 54卷 / 26期

关键词：

Magnesium alloy; Corrosion; Corrosion rate; Polarization curve; Electrochemical impedance spectroscopy; MAGNESIUM ALLOYS; IMPEDANCE SPECTROSCOPY; PURE MAGNESIUM; ALUMINUM; INDUSTRY; GEL;

D O I：

10.1016/j.electacta.2009.06.023

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

The influence of different contents of rare earth Y on the corrosion resistance of AZ91 alloy was investigated by the salt spray test and electrochemical measurements. It was found that the proper amount of Y was effective on improving the corrosion resistance of AZ91 alloy. The optimal modification effect was obtained when the Y content in the alloys was 0.3 wt.% However, with the increase of rare earth Y, the corrosion rate became bigger slightly, and further addition of Y content over 0.3 wt.% resulted in the increment of the corrosion rate. It is suggested that the excessive rare earth Y can reduce the corrosion resistance of AZ91 alloy. (c) 2009 Elsevier Ltd. All rights reserved.

引用

页码：6433 / 6437

页数：5

共 32 条

[1]

The role of the magnesium industry in protecting the environment [J].

Aghion, E ;

Bronfin, B ;

Eliezer, D .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2001, 117 (03) :381-385

[2]

Baghni IM, 2004, T NONFERR METAL SOC, V14, P1

[3]

DEVELOPMENT OF CORROSION-RESISTANT MAGNESIUM ALLOYS .2. STRUCTURE OF CORROSION PRODUCTS ON RAPIDLY SOLIDIFIED MG-16AL ALLOYS [J].

BALIGA, CB ;

TSAKIROPOULOS, P .

MATERIALS SCIENCE AND TECHNOLOGY, 1993, 9 (06) :513-519

[4]

The corrosion of pure magnesium in aerated and deaerated sodium sulphate solutions [J].

Baril, G ;

Pébère, N .

CORROSION SCIENCE, 2001, 43 (03) :471-484

[5]

AC impedance spectroscopy in characterizing time-dependent corrosion of AZ91 and AM50 magnesium alloys -: Characterization with respect to their microstructures [J].

Baril, G ;

Blanc, C ;

Pébère, N .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (12) :B489-B496

[6]

Protective coatings on copper prepared by sol-gel for industrial applications [J].

Boysen, W ;

Frattini, A ;

Pellegri, N ;

de Sanctis, O .

SURFACE & COATINGS TECHNOLOGY, 1999, 122 (01) :14-17

[7]

Characterisation by EIS of ternary Mg alloys synthesised by mechanical alloying [J].

Brett, CMA ;

Dias, L ;

Trindade, B ;

Fischer, R ;

Mies, S .

ELECTROCHIMICA ACTA, 2006, 51 (8-9) :1752-1760

[8]

Cao C., 2002, An Introduction to Electrochemical Impedance Spectroscopy, V1

[9]

Conversion-coating treatment for magnesium alloys by a permanganate-phosphate solution [J].

Chong, KZ ;

Shih, TS .

MATERIALS CHEMISTRY AND PHYSICS, 2003, 80 (01) :191-200

[10]

Electroless nickel plating of magnesium [J].

Fairweather, WA .

TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING, 1997, 75 :113-117

← 1 2 3 4 →