Zn-TiO2 and ZnNi-TiO2 Nanocomposite Coatings: Corrosion Behaviour

被引：9

作者：

Gomes, A. ^{[1
]}

Almeida, I. ^{[1
]}

Frade, T. ^{[1
]}

Tavares, A. C. ^{[2
]}

机构：

[1] Univ Lisbon, Fac Ciencias, Dep Quim & Bioquim, CCMM, Campo Grande,Ed C8,4 Piso, P-1749016 Lisbon, Portugal

[2] Inst Natl Rech Sci Energie Varennes, INRS EMT, Varennes, PQ J3X 1S2, Canada

来源：

ADVANCED MATERIALS FORUM V, PT 1 AND 2 | 2010年 / 636-637卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Pulsed electrodeposition; Nanocomposite coating; TiO2; particles; Corrosion; ELECTRODEPOSITION;

D O I：

10.4028/www.scientific.net/MSF.636-637.1079

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work presents the corrosion behaviour of the as-prepared of Zn-TiO2 and ZnNi-TiO2 films in neutral Na2SO4 solution and a first attempt to correlate with their composition, morphology and structure. The films were prepared by galvanostatic pulse method onto steel electrodes, at room temperature. The X-ray diffraction study revealed that the ZnNi alloy consists of a homogenous Ni5Zn21 phase and that the preferred crystallographic orientation of Zn deposits changes in the presence of TiO2. The SEM results show that the morphology of the metallic coating is function of the metal phase composition and become more porous in the presence of 1.5 wt% TiO2. The corrosion parameters for the nanocomposite coatings were compared with those of pure Zn and ZnNi electrodeposits, and the ZnNi-TiO2 nanocomposite coating shows the less cathodic corrosion potential.

引用

页码：1079 / +

页数：2

共 7 条

[1] Studies on electrodeposited nickel-yttria doped ceria composite coatings [J].