Paper Title:
Properties of Anodic Coatings Obtained in an Organic, Environmental Electrolyte by Micro Arc Oxidation on Magnesium Alloy
  Abstract

In a solution containing 10g/L NaOH and 12g/L phytic acid, anodic coatings were obtained by micro arc oxidation (MAO) on AZ91HP magnesium alloy. The morphology, structure and composition of anodic coatings were investigated by scanning electron microscope (SEM), X-ray diffraction (XRD) and energy dispersive X-ray (EDX). The corrosion resistance of magnesium alloy before and after MAO treatment was evaluated by immersion test and potentiodynamic polarization testing in 3.5wt. % NaCl solution. The coatings were evenly formed on the substrate and mainly composed of MgO. EDX analyses showed that phytic acid took part in the coating formation. Compared with the substrate, the corrosion resistance of magnesium alloy after MAO treatment was improved considerably.

  Info
Periodical
Advanced Materials Research (Volumes 189-193)
Edited by
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Pages
1001-1004
DOI
10.4028/www.scientific.net/AMR.189-193.1001
Citation
R. F. Zhang, S. F. Zhang, J. C. Gong, W. L. Liu, H. J. Zhou, P. F. Guo, X. X. Wu, "Properties of Anodic Coatings Obtained in an Organic, Environmental Electrolyte by Micro Arc Oxidation on Magnesium Alloy", Advanced Materials Research, Vols. 189-193, pp. 1001-1004, 2011
Online since
February 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Rong Fa Zhang, Da Yong Shan, En Hou Han
Abstract:Among four AZ91 samples, two were once anodized and the others were twice anodized in two electrolytic baths. After twice anodization, two...
653
Authors: Shu Hua Li, Fu Chi Wang
Abstract:The ceramic coating was formed by micro-plasma arc oxidation (MPAO) on AZ91D magnesium alloy. The surface and section morphology of coatings...
2451
Authors: Yu Qing Wen, Hui Min Meng, Wei Shang, Xiu Juan Jiang
Chapter 4: Frontiers of Energy Engineering and Materials
Abstract:The composite coatings were prepared on aluminum alloy by anodizing and chemical conversion method. The coatings consisted of a anodic oxide...
2361
Authors: M.Z.M. Zain, S. Illias, M. Mat Salleh, K. Azwan Ismail, Z. Nooraizedfiza
Chapter 5: Materials Science and Technologies
Abstract:Anodization is a useful technique for forming protective films on magnesium alloys and improves its corrosion resistance. Based on the rare...
210
Authors: Ze Min Chen, Pin Lu, Qiu Hong Dong
Chapter 2: Material Science and its Application
Abstract:This study selected sodium silicate, sodium fluoride, glycerol hydroxyl acid, potassium hydroxide and phosphine oxide (LAP) as the stabilizer...
595