Research on Water Based Coating for Magnesium Alloy


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Magnesium and its alloys have many applications for theirs excellent physical and mechanical properties. Due to magnesium’s active chemical properties and difficulties in direct painting, a novel environmental protective water based coating was developed, which mainly contains metal flake, silicate, silane and sodium polyphosphate etc. The properties and structure of the coating were investigated by adhesion test, hardness test, heat resistance test, neutral salt spray test and Scanning Electron Microscopy (SEM) et al. Meanwhile, the effect of sodium polyphosphate was also examined by hydrogen evolution test and electrochemical test. Furthermore, the film forming mechanism of the coating was explored by Fourier Transform Infrared spectroscopy (FTIR). Results showed that the coating had a stepped structure which could achieve extraordinary adhesion, 350°C temperature heat resistance, HV0.50/30 210 hardness and 300 hours anti-corrosion time in salt spray test. In the coating, the addition of sodium polyphosphate could greatly improve the corrosion resistance of the coating because of the barrier film formed by sodium polyphosphate. The mechanism of interpenetrating polymer network (IPN) was preliminary put forward based on the results of FTIR.



Advanced Materials Research (Volumes 15-17)

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer and C. Ravindran




W. Huang et al., "Research on Water Based Coating for Magnesium Alloy", Advanced Materials Research, Vols. 15-17, pp. 485-490, 2007

Online since:

February 2006




[1] B.L. Mordike and T. Ebert: Materials Science and Engineering. Vol. A302 (2001), pp.37-45.

[2] Y. Mizutani, S.J. Kim, R. Ichino and M. Okido: Surface and Coatings Technology. Vol. 169-170 (2003), pp.143-146.


[3] Frank Hollstein, Renate Wiedemann and Jana Scholz: Surface and Coatings Technology. Vol. 162 (2003), pp.261-268.


[4] J.E. Gray and B. Luan: Journal of Alloys and Compounds. Vol. 336 (2002), pp.88-113.

[5] D. Dube´ , M. Fiset, A. Couture and I. Nakatsugawa: Materials Science and Engineering. Vol. A299 (2001), pp.38-45.

[6] D.R. Arnott, N.E. Ryan, B.R.W. Hinton, B.A. Sexton and A.E. Hughes: Appl. Surf. Sci. Vol. 23 (1985), p.236.

[7] D.R. Arnott, B.R.W. Hinton and N.E. Ryan: Corrosion. Vol. 45(1989), p.12.

[8] Manuele Dabala, Katya Brunelli and Enrico Napolitani. Surface and Coatings Technology. Vol. 172 (2003), pp.227-232.


[9] M.A. Gonzale-Nunez, C.A. Nunez-Lopez and P. Skeldon: Corrosion Science. Vol. 37. No. 11 (1995), pp.1763-1772.

[10] Hongwei Huo, Ying Li and Fuhui Wang. Corrosion Science. Vol. 46 (2004), pp.1467-1477.

[11] Fred.W. Eppensteiner and Melvin.R. Jenkins: Metal finishing. Vol. 98 (2000), pp.497-509.


[12] Fred.W. Eppensteiner and Melvin.R. Jenkins: Metal finishing. Vol. 97 (1999), p.494, 496-498.

[13] David Hawke and D. L Albright: Metal Finishing. Vol. 93. No. 10 (1995), p.34, 36-38.

[14] J.I. Skar, M. Water and D. Albright: International Congress and Exposition. 1997, p.7.

[15] B. Arkles: Chemical Technology. No. 7 (1977), p.766.

[16] Y. Xu and D.L. Chung: Cement and concrete Research. Vol. 29 (1999), pp.773-776.

[17] Andrzej Krysztafkiewicz, Radosaw Werner and Lidia K. Lipska: Colloids and Surfaces A: Physicochemical and Engineering Aspects. Vol. 182 (2001), pp.65-81.