Paper Title:
Electrochemical Characteristics of the Rare Earth Compound Coating on 6061 Aluminum Alloy
  Abstract

The composite coatings were prepared on aluminum alloy by anodizing and chemical conversion method. The coatings consisted of a anodic oxide coating and a rare earth conversion coating. The surface morphology and composition of the composite coatings were analyzed by scanning electron microscopy (SEM) and energy dispersive X-rays (EDX). The electrochemical properties of the different samples were researched by Potentiodynamic polarisation and electrochemical impedance spectroscopy in a 3.5-wt.% NaCl solution. The results showed that corrosion current density of the sample with composite coatings was 3.611×10-9 A·cm-2, impedance was 6.107×105 Ω·cm-2. The composite coatings had better corrosion resistance than the sample with anodic oxide film and the aluminum alloy substrate.

  Info
Periodical
Chapter
Chapter 4: Frontiers of Energy Engineering and Materials
Edited by
Dongye Sun, Wen-Pei Sung and Ran Chen
Pages
2361-2365
DOI
10.4028/www.scientific.net/AMM.71-78.2361
Citation
Y. Q. Wen, H. M. Meng, W. Shang, X. J. Jiang, "Electrochemical Characteristics of the Rare Earth Compound Coating on 6061 Aluminum Alloy", Applied Mechanics and Materials, Vols. 71-78, pp. 2361-2365, 2011
Online since
July 2011
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Price
$32.00
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