Paper Title:
Effect of Phosphating Additives on Corrosion Resistance of Phosphate Coatings on AZ91D Magnesium Alloy
  Abstract

AZ91D magnesium alloys were immersed in different phosphating solutions with zinc nitrate and sodium fluoride additives to enhance the corrosion resistance. The devolution law of the Open Circuit Potential (OCP) of AZ91D alloys during phosphating was measured. The corrosion behaviors of AZ91D alloys in 3.5%NaCl solution were investigated using OCP and Tafel polarization methods, and the effect of phosphating additives was discussed. The results show that the changes of the OCP of AZ91D alloys with phosphating time in different phosphating solutions are different; the anodic and cathodic corrosion processes of AZ91D alloys are conspicuously inhibited with phosphate coatings; zinc nitrate and sodium fluoride are benefit to form phosphate coatings with better corrosion resistance. The corrosion potential of AZ91D alloy phosphated in solutions with both zinc nitrate and sodium fluoride is most positive.

  Info
Periodical
Chapter
Chapter 1: Surface Engineering/Coatings
Edited by
Prasad Yarlagadda, Yun-Hae Kim, Zhijiu Ai and Xiaodong Zhang
Pages
112-115
DOI
10.4028/www.scientific.net/AMR.337.112
Citation
B. L. Lin, Y. Y. Xu, E. C. Li, "Effect of Phosphating Additives on Corrosion Resistance of Phosphate Coatings on AZ91D Magnesium Alloy", Advanced Materials Research, Vol. 337, pp. 112-115, 2011
Online since
September 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: Wei Zhang, Kunio Arai, J. Qiang, C. Qin, F. Jia, Akihisa Inoue
Abstract:The addition of Ti and Zr to Ni-Ta binary alloys is effective for the increase in stabilization of supercooled liquid and glass-forming...
1421
Authors: Jun Guang He, Jiu Ba Wen, Xu Dong Li
Abstract:To improve the current efficient of Al-Zn-Sn alloy, the influence of different contents Ce on the microstructures and electrochemical...
288
Authors: Xiao Ping Luo, Lan Ting Xia, Ming Gang Zhang
Abstract:The effect of Cd and Sb addition on the microstructural and mechanical properties of as-cast AZ31 alloys was investigated and compared. The...
197
Authors: Ni Tian, Gang Zhao, Bo Nie, Jian Jun Wang, Liang Zuo, Chun Ming Liu
Chapter 2: Deformation
Abstract:The texture, microstructure, plastic strain ratio r value, elongation, strain hardening index n, the value of cupping test IE, and...
356
Authors: Joon Sik Park, Jeong Min Kim, Young Ho Song, Byung Hwan-Hong, Ye Won Cho, Sang Wook Joo, Joong Seok-Oh
Chapter 6: New Materials and Composites Materials
Abstract:The nature of high specific strength compared with other structural materials has led to wide application of Mg alloys. However, Mg alloys...
727