Influence of pulse waveforms on electrodeposition of Zn coating

被引：5

作者：

Dai, J. F. ^{[1
]}

Wang, W. ^{[1
,2
]}

Liang, J. ^{[2
]}

Chu, Q. W. ^{[2
]}

Zhen, Z. Z. ^{[3
]}

机构：

[1] Lanzhou Univ Technol, Lanzhou, Peoples R China

[2] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[3] Magontec Xian Co Ltd, Xian, Peoples R China

来源：

SURFACE ENGINEERING | 2013年 / 29卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Pulse waveform; Electrodeposition; Zn coating; Ionic liquid; Magnesium alloy; Corrosion resistance; MAGNESIUM; ALLOY; CORROSION; ZINC;

D O I：

10.1179/1743294413Y.0000000144

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Zn coatings were electrodeposited successfully from a ChCl based ionic liquid with four different pulse waveforms, namely, square pulse, sine pulse, sawtooth pulse and triangular pulse. The compositions and microstructures of the Zn coatings were investigated by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). The adhesion and corrosion resistance of the Zn coatings on magnesium alloy was evaluated using scratch tests and electrochemical polarisation tests respectively. It was shown that the pulse modes have a great influence on the morphologies and microstructures of the Zn coatings. The Zn coating deposited from sawtooth pulse was evidently uniform, smooth and dense compared with other coatings. Correspondingly, the sawtooth pulse coating exhibited better adhesion and corrosion resistance in comparison with other pulses.

引用

页码：500 / 506

页数：7

共 17 条

[1] Selective extraction of metals from mixed oxide matrixes using choline-based ionic liquids [J].