Morphology and composition of Zn-Ni alloy obtained from sulphate bath containing complexing agent

被引：2
作者：
Faid, H. [1 ]
Galvan, J. C. [2 ]
机构：
[1] Univ Bordj Bou Arreridj, Fac Sci & Technol, Dept Environm Engn, Bordj Bou Arreridj 34000, Algeria
[2] Ctr Nacl Invest Met CENIM, Madrid, Spain
来源：
TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING | 2020年 / 98卷 / 03期
关键词：
Zn-Ni alloys; electrodeposition; EDTA; morphology; corrosion resistance; ZINC ELECTRODEPOSITION; ADDITIVES; CO; ACID;
D O I：
10.1080/00202967.2020.1749425
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Zn-Ni alloys were electrodeposited on stainless steel from a sulphate bath in the presence of EDTA (ethylenediaminetetraacetic acid) as a complexing agent. The electrochemical behaviour of the bath was studied by cyclic voltammetry (CV), chronoamperometry (CA). Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis showed a change in surface morphology; the phase structure corresponds to the face centre cubic (fcc) structure attributed to the gamma phase (Ni5Zn21). The corrosion measurements of the obtained deposits with various EDTA concentrations were studied using potentiodynamic polarisation. Results showed that the deposit obtained in the presence of a low EDTA concentration (0.25 g L-1) exhibits better corrosion resistance.
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收藏
页码：138 / 143
页数：6
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