Incorporation of carbon nanotubes into micro-coatings film formed on aluminum alloy via plasma electrolytic oxidation

被引：46

作者：

Lee, Kang Min ^{[2
]}

Ko, Young Gun ^{[1
]}

Shin, Dong Hyuk ^{[2
]}

机构：

[1] Yeungnam Univ, Sch Mat Sci & Engn, Gyongsan 712749, South Korea

[2] Hanyang Univ, Dept Met & Mat Engn, Ansan 426791, South Korea

来源：

MATERIALS LETTERS | 2011年 / 65卷 / 14期

基金：

新加坡国家研究基金会;

关键词：

Plasma electrolytic oxidation; Metals and alloys; Carbon nanotube; Coating; Microstructure; MAGNESIUM ALLOY; ARC OXIDATION; CORROSION-RESISTANCE; SILICATE SOLUTION; CURRENT-DENSITY; OXIDE COATINGS; SURFACE; BEHAVIOR; MICROSTRUCTURE; POROSITY;

D O I：

10.1016/j.matlet.2011.04.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of the incorporation of carbon nanotubes (CNTs) on the coating structure of aluminum alloy processed by plasma electrolytic oxidation (PEO) has been studied as a function of the current density. A series of PEO coatings was applied in a silicate-electrolyte containing CNTs at three current densities, such as 50, 100, and 150 mA/cm(2). As the current density increased, the responding voltage also increased due to a gradual increment in the amount of CNTs incorporated uniformly into the coating film. In addition, a number of CNTs were observed mainly near micro-pores formed in the coating film by plasma explosive arcs, resulting in a fairly uniform coating structure with a low density of micro-pores. This phenomenon was discussed based on the electrophoretic activity of CNTs. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2269 / 2273

页数：5

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