Surface Science Studies of the Effect of Al Alloy Microstructure on the Formation of Chromate Coatings

Abstract:

Surface science methods including scanning Auger microscopy (SAM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy have been used to study the initial growth of chromate conversion coatings on aluminum 2024-T3 alloy, using a coating bath formed by dissolving CrO3, Na2Cr2O7 and NaF in water. The objective is to learn more about growth mechanism on the different microstructural regions of this alloy surface, including the second-phase particles and the alloy matrix.

• Periodical: Materials Science Forum (Volumes 519-521)
• Pages: 621-628
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.519-521.621
• Online since: July 2006
• Authors: S.A. Kulinich, A.S. Akhtar, D. Susac, K.C. Wong, P.C. Wong, K.A.R. Mitchell
• Keywords: Aluminium Alloy, Chromate Conversion Coating, Photoelectron Spectroscopy, Raman Spectroscopy, Scanning Auger Microscopy, Scanning Electron Microscope (SEM)

References

[1] J.E. Gray and B. Luan: J. Alloy. Compd. Vol. 336 (2002), p.88.

[2] W.J. van Ooij, D.Q. Zhu, G. Prasad, S. Jayaseelan, Y. Fu and N. Teredesai: Surf. Eng. Vol. 16 (2000), p.386.

[3] H. Guan and R.G. Buchheit: Corrosion Vol. 60 (2004), p.284.

[4] Y. Liu, D. Sun, H. You and J.S. Chung: Appl. Surf. Sci. Vol. 246 (2005), p.82.

[5] A.S. Akhtar, D. Susac, P. Glaze, K.C. Wong, P.C. Wong and K.A.R. Mitchell: Surf. Coat. Technol. Vol. 187 (2004), p.208.

[6] G.M. Brown and K. Kobayashi: J. Electrochem. Soc. Vol. 148 (2001), p. B457.

[7] M. Jaime Vasquez, G.P. Halada, C.R. Clayton and J.P. Longtin: Surf. Interface Anal. Vol. 33 (2002), p.607.

DOI: 10.1002/sia.1428

[8] D. Susac, X. Sun, R.Y. Li, K.C. Wong, P.C. Wong, K.A.R. Mitchell and R. Champaneria: Appl. Surf. Sci. Vol. 239 (2004), p.45.

[9] P. Campestrini, H. Terryn, J. Vereecken and J.H.W. de Wit: J. Electrochem. Soc. Vol. 151 (2004), p. B359.

DOI: 10.1149/1.1736682

[10] R.G. Buchheit, R.P. Grant, P.F. Hlava, B. Mckenzie and G.L. Zender: J. Electrochem. Soc. Vol. 144 (1997), p.2621.

[11] A. Kolics, A.S. Besing and A. Wieckowski: J. Electrochem. Soc. Vol. 148 (2001), p. B322.

[12] J.R. Waldrop and M.W. Kendig: J. Electrochem. Soc. Vol. 145 (1998), p. L11.

[13] X. Sun, R. Li, K.C. Wong and K.A.R. Mitchell: J. Mater. Sci. Vol. 36 (2001), p.3215.

[14] A.S. Akhtar, D. Susac, K.C. Wong, P.C. Wong and K.A.R. Mitchell: Mater. Sci. Forum, submitted for this volume.

[15] A.E. Hughes, R.J. Taylor and B.R.W. Hinton: Surf. Interface Anal. Vol. 25 (1997), p.223.

[16] W.R. McGovern, P. Schmutz, R.G. Buchheit and R.L. McCreery: J. Electrochem. Soc. Vol. 147 (2000), p.4494.

[17] G.S. Frankel: J. Electrochem. Soc. Vol. 145 (1998), p.2186.

[18] P. Schmutz and G.S. Frankel: J. Electrochem. Soc. Vol. 145 (1998), p.2295.

[19] F.W. Lytle, R.B. Greegor, G.L. Bibbins, K.Y. Blohowiak, R.E. Smith and G.D. Tuss: Corros. Sci. Vol. 37 (1995), p.349.

DOI: 10.1016/0010-938x(94)00101-b

[20] J. Zhao, L. Xia, A. Sehgal, D. Lu, R.L. McCreery and G.S. Frankel: Surf. Coat. Technol. Vol. 140 (2001), p.51.

[21] L. Xia and R.L. McCreery: J. Electrochem. Soc. Vol. 145 (1998), p.3083.

[22] S. Maeda and M. Yamamoto: Prog. Org. Coat. Vol. 33 (1998), p.83.