Electrochemical and Salt Spray Corrosion of FeCo-Based Bulk Amorphous Alloys

被引：0

作者：

Chen Qingjun ^{[1
]}

Jiang Wei ^{[1
]}

Zhang Fabi ^{[2
]}

Dong Yinghu ^{[1
]}

Zhou Xianliang ^{[1
]}

机构：

[1] Nanchang Hangkong Univ, Nanchang 330063, Peoples R China

[2] Saga Univ, Saga 8408502, Japan

来源：

RARE METAL MATERIALS AND ENGINEERING | 2016年 / 45卷 / 09期

关键词：

FeCo-based bulk amorphous alloy; corrosion resistance; electrochemical corrosion; salt spray corrosion; GLASS-FORMING ABILITY; METALLIC GLASSES; HCL SOLUTION; BEHAVIOR; CO; RESISTANCE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion resistance of Fe24+xCo24-xCr15Mo14C15B6Y2 (x=0, 2, 4, 6, 17) bulk amorphous alloy was investigated by electrochemical tests and neutral salt spray corrosion. The alloy forms a wide passivation zone in 1 mol/L HCl, and its EIS spectra are composed of a single capacitive loop, showing a good corrosion resistance. Combined with the results of polarization curves and AC impedance analysis, it suggests that the corrosion resistance of the alloy increases first and then decreases with the increasing of Co content. It gets the best corrosion resistance when the Co content is 20 at%. EDS and atomic force microscopy (AFM) were used to analyze the salt spray corrosion result. It indicates that the corrosion products are mainly composed of iron and cobalt oxides and their chlorides. Meanwhile, the corrosion degree of FeCo-based bulk amorphous alloys changes with the variation of Co content, and its salt spray corrosion resistance rule is consistent with the electrochemical corrosion resistance rule.

引用

页码：2322 / 2326

页数：5