The effects of electrodeposition current density on properties of Ni-CNTs composite coatings

被引：85

作者：

Guo, Chao ^{[1
]}

Zuo, Yu ^{[1
]}

Zhao, Xuhui ^{[1
]}

Zhao, Jingmao ^{[1
]}

Xiong, Jinping ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Sch Mat Sci & Engn, Beijing 100029, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2008年 / 202卷 / 14期

关键词：

electrodeposition; carbon nanotubes; nickel; composite coating; current density;

D O I：

10.1016/j.surfcoat.2007.11.032

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

The effects of electrodeposition current density on the properties of Ni-carbon nanotubes (CNTs) composite coating were studied with methods of scanning electron microscopy (SEM), tensile testing, hardness testing and electrochemical testing. The results show that the composite coating becomes coarser when the depositing current increases. As the depositing current density increases, carbon content in the composite coating first increases then decreases, with the highest carbon content at 8 A/dm(2). The adherence, cracking resistance, micro-hardness and electrochemical resistance of the composite coatings all reach their peak values at 8 A/dm(2). The results indicate that the existence of CNTs in the composite coatings improves toughness, strength and corrosion resistance of the coatings. (c) 2007 Published by Elsevier B.V.

引用

页码：3246 / 3250

页数：5

共 21 条

[1]

Enhancement of wear resistance of ductile cast iron by Ni-SiC composite coating [J].