Effect of Zn addition on corrosion resistance of Cu-10Ni alloy in clean and sulphide contaminated seawater

被引：1
|
作者：
Tandon, Vipin [1 ]
Patil, Awanikumar P. [1 ]
Bansod, Ankur [1 ]
机构：
[1] Visvesvaraya Natl Inst Technol, Dept Met & Mat Engn, Nagpur 440010, Maharashtra, India
来源：
CANADIAN METALLURGICAL QUARTERLY | 2018年 / 57卷 / 02期
关键词：
Copper alloys; seawater; sulphide; corrosion; electrochemical techniques; POLLUTED SYNTHETIC SEAWATER; COPPER-NICKEL-ALLOYS; CU-NI; ELECTROCHEMICAL-BEHAVIOR; NACL SOLUTION; BRASS; IONS; WATER;
D O I：
10.1080/00084433.2017.1403073
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Cu-10Ni alloy has an outstanding resistance to corrosion in seawater due to formation of protective Cu2O film. However, in presence of S2- ions, it suffers accelerated corrosion. The present paper investigates the corrosion behaviour of Cu-10Ni, Cu-10Ni-6Zn and Cu-10Ni-12Zn alloys using weight loss, electrochemical impedance spectroscopy and potentiodynamic polarisation technique. The experiments were performed in clean seawater and sulphide contaminated seawater. The Cu-10Ni-6Zn and Cu-10Ni-12Zn alloys were found to exhibit lower corrosion rate than Cu-10Ni alloy in clean and sulphide contaminated seawater. Lower corrosion rate of Zn containing alloys in clean seawater is attributed to the incorporation of Zn2+ ions in Cu2O lattice. Lower corrosion rate of Zn containing alloys sulphide contaminated seawater is attributed to formation of ZnS in the film.
引用
收藏
页码：194 / 200
页数：7
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