Composition, morphology, structural aspects and electrochemical properties of Ni-Co alloy coatings

被引：77

作者：

Lupi, C. ^{[1
]}

Dell'Era, A. ^{[2
]}

Pasquali, M. ^{[3
]}

Imperatori, P. ^{[4
]}

机构：

[1] Univ Roma La Sapienza, Dept ICMA, I-00184 Rome, Italy

[2] CIRPS, I-00184 Rome, Italy

[3] Univ Roma La Sapienza, Dept SBAI, I-00161 Rome, Italy

[4] CNR, Ist Struttura Mat, I-00016 Rome, Italy

来源：

SURFACE & COATINGS TECHNOLOGY | 2011年 / 205卷 / 23-24期

关键词：

Ni-Co coatings; Electrodeposition; Electrochemical properties; Galvanostatic deposition; HYDROGEN EVOLVING ACTIVITY; NICKEL; COBALT; ELECTRODEPOSITION; FILM;

D O I：

10.1016/j.surfcoat.2011.06.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nickel-cobalt alloys having settled composition can be produced by electrolysis after optimising process operative conditions. In this work nickel-cobalt coatings on 1050 Al net, obtained by electrodeposition under galvanostatic conditions, were investigated. Ni-Co coatings were electrowon, from an acidic sulphate bath containing 40 g/L Ni and Co in the range 0.1-16 g/L, at 60 degrees C temperature and 300 A/m(2) average current density. The experimental results highlight a linear correlation between bath and deposit Co/Ni ratio, with slope change for Co concentration in the electrolyte higher than 3 g/L. Morphology, structure and electrochemical properties are strictly correlated among themselves and with the composition of the coating. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：5394 / 5399

页数：6

共 27 条

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