Study on Phosphating on the Magnesium Alloys


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In this paper, the solution mainly containing Zn(H2PO4)2 was used to prepare phosphating coatings on AZ31,AZ61 and AZ91 magnesium alloys. The effects of the phosphating parameters and the composition of phosphating solution on the formation of the coatings were investigated by orthogonal tests. The corrosion behaviors of the phosphating coatings were also studied and it is found that there was no hydrogen evolution in at least 1h. In the last, 60~80μm organic coatings were painted on the phosphated magnesium alloys,the organic coatings adhered to the phosphating coating, and the anti-corrosion abilities were improved .



Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.




W. Lan et al., "Study on Phosphating on the Magnesium Alloys", Materials Science Forum, Vols. 546-549, pp. 597-600, 2007

Online since:

May 2007




[1] R.K. Singh Raman, S. Murray, M. Brandt . Laser surface treatment for microstructure as sisted localized corrosion resistance of a magnesium alloy . 16th International Corrosion Congress September 19-24, 2005, Beijing, China.

[2] Duan Hongping, Du Keqin, Yan Chuanwei. Studies on the anti-corrosion Behaviors of synergistic coatings for magnesium alloy AZ91D. 16th International Corrosion Congress September 19-24, 2005, Beijing, China.


[3] H. Umehara , M. Takaya , S. Terauch. Surface and Coatings Technology 169 -170 (2003) , 666-669.

[4] Kwo Zong Chong, Teng Shih Shih. Materials Chemistry and Physics 80 (2003) , 191-200.


[5] Kwiatkowski, L. Surface Engineering, Aug2004, Vol. 20(4), 292-298.