Evaluation of corrosion resistance of electrodeposited nanocrystalline Ni-Fe alloy coatings

被引：8

作者：

Farshbaf, P. A. ^{[1
]}

Bostani, B. ^{[1
]}

Yaghoobi, M. ^{[1
]}

Farshbaf, P. A. ^{[1
]}

Bostani, B. ^{[1
]}

Yaghoobi, M. ^{[1
]}

Ahmadi, N. P. ^{[1
]}

机构：

[1] Sahand Univ Technol, Fac Mat Engn, Tabriz, Iran

来源：

TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING | 2017年 / 95卷 / 05期

关键词：

Electrodeposition; NiFe alloy; FeNi3; Nanocrystalline structure; Corrosion; Microhardness; THIN-FILMS; DEPOSITION; ALUMINUM;

D O I：

10.1080/00202967.2017.1338375

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nickel-iron alloys with a compositional range of 24-80 wt-% iron were electrodeposited on a copper substrate from a sulphate-based bath and using a stirring rate of 100 rev min(-1). The effect of applied current density and Ni2+/Fe2+ metal ion ratio of plating bath on the properties of alloy coatings was examined. Crystal structure and grain size of Ni-Fe alloy coatings were investigated using X-ray diffraction technique. Field emission scanning electron microscopy and energy dispersive X-ray spectroscopy were used to analyse the surface morphology and chemical composition of coatings. Microhardness test was applied to evaluate the hardness of the coatings. Finally, the electrochemical behaviour of the Ni-Fe alloy coatings was studied by a polarisation test in 10 wt-% H2SO4 solution. Results revealed that current density and plating bath composition had a strong effect on the characteristics of coatings. As the iron content of alloys produced increased, their corrosion resistance improved with the best corrosion resistivity being achieved at a metal ion ratio of 0.5 and applied current density of 2.5 A dm(-2).

引用

页码：269 / 275

页数：7

共 33 条

[1]

ASTM, E8 Standard Test Methods of Tension Testing of Metallic Materials, V03

[2] Influence of SiC nanoparticles and saccharin on the structure and properties of electrodeposited Ni-Fe/SiC nanocomposite coatings [J].