Paper Title:
Research on Corrosion Resistance of AZ91D Magnesium Alloy Coated with Epoxy Resin
  Abstract

The corrosion resistance of a 1~2mm thick AZ91D magnesium alloy die-casting coated with epoxy varnish after phosphatizing was tested. Zinc phosphating solution was used. In the experiment, uniform paint was obtained by dipping method. Scratch test showed that the adhesion force between the coating and matrix is excellent. Within the test range the optimal phosphating temperature and time are 50°C and 1 min tested by dynamic potential scanning method. With the organic coating the corrosion current density decreased 3 orders of magnitude, the polarization resistance increased 3 orders of magnitude. The coated specimens were immersed in10% H2SO4, 10% NaOH and acetone for 10 days, respectively. The results showed that blistering did not occur on the paint films. This work illustrated that the simple zinc phosphating process combined with simple organic coating can meet the corrosion resistance requirements of thin-wall die casting magnesium components that require higher quality appearance.

  Info
Periodical
Edited by
Yafang Han, Fusheng Pan, Jianmao Tang, Chungen Zhou
Pages
292-299
DOI
10.4028/www.scientific.net/MSF.686.292
Citation
Y. G. Li, Y. H. Wei, L. F. Hou, Y. Tian, L. J. Yang, "Research on Corrosion Resistance of AZ91D Magnesium Alloy Coated with Epoxy Resin", Materials Science Forum, Vol. 686, pp. 292-299, 2011
Online since
June 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: Chun Yu Wang, Gao Hui Wu, Peng Chao Kang, Yun He Zhang, Zi Yang Xiu, Guo Qin Chen
Abstract:Improved corrosion resistance of carbon fiber reinforced aluminum (Cf/Al) matrix composites can be achieved by applying appropriate...
1675
Authors: Bing Ying Wang, Zhen Tong Sun
Abstract:Four different metal coatings of pure aluminum, aluminum zinc alloy, titanium, aluminum Titanium were prepared on the surface of X80 pipeline...
533
Authors: Feng Jun Lang, Ying Ma, Jian Rong Liu, Xian Qiu Huang, Mou Cheng Li
Chapter 1: Surface Engineering/Coatings
Abstract:The influence of passivation on pitting corrosion of 316L stainless steel in concentrated seawater was investigated by using cyclic anodic...
127
Authors: Yan Bo Wu, Xiao Xi Wang, Ting Lou, Tie Ben Song
Chapter 9: Energy Chemical Engineering
Abstract:SnSO4 and TiOSO4 were chosen in this paper as the main salts for preparing composite chemical conversion coating on aluminum alloy. The scope...
2191
Authors: Jie Ma, Yuan Sheng Yang, Xiu Chun Wang, Jing Zhang, Shuo Liu, Li Kun Jiang, Xi Bin Yi
Chapter 11: Thin Films/Surface Engineering/Coatings
Abstract:Microarc oxidation coatings were prepared on the surface of AZ31 magnesium alloy profiles. Oxidation time of the coatings was between...
1993