Characterization of Cr-α-Al2O3 Composite Coatings Electrodeposited from Cr(Ⅲ) Plating Bath

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Cr-α-Al2O3 composite coatings were prepared by direct current deposition experiments from Cr(Ⅲ) plating bath and the thickness of composite coatings could be up to 14 μm. The obtained Cr-α-Al2O3 coatings and Cr coatings were characterized by means of EDS, SEM and microhardness measurement. Results revealed that Cr-α-Al2O3 coatings exhibit fine-grained structure with uniform surface and the highest microhardness values(692 HV) when the α-Al2O3 content of coatings was 15g/L, although some pores and defects are still present in the coatings. Analysis of Tafel curves indicated that the presence of α-Al2O3 in the Cr coatings show better features in the corrosion resistance both in H2SO4 and NaOH solution than those prepared from the bath without α-Al2O3.

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Periodical:

Edited by:

Dongye Sun, Wen-Pei Sung and Ran Chen

Pages:

60-64

DOI:

10.4028/www.scientific.net/AMM.121-126.60

Citation:

X. Sun et al., "Characterization of Cr-α-Al2O3 Composite Coatings Electrodeposited from Cr(Ⅲ) Plating Bath", Applied Mechanics and Materials, Vols. 121-126, pp. 60-64, 2012

Online since:

October 2011

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$35.00

[1] W. Mertz, K. Schwarz, Arch. Biochem. Biophys. 58 (1992) 504.

[2] S.K. Ibrahim, D.T. Gawne, A. Watson, Trans. IMF 76 (4) (1998) 156.

[3] Y. Zhang, W.H. Wang, A.L. Greer, Nat. Matters 5 (2006) 857.

[4] A. Leonhard, L.Q. Xing, M. Heilmaier, A. Gebert, J. Eckert, L. Schultz, Nanostruct. Mater. 10 (1998) 805.

[5] W.L. Johnson, Mater. Sci. Forum. 225 (1996) 35.

[6] U. Kühn, J. Eckert, N. Mattern, L. Schultz, Appl. Phys. Lett. 80 (2002) 2874.

[7] K.H. Hou, M.D. Ger, L.M. Wang, S.T. Ke, The wear behaviour of electro-codeposited Ni–SiC composites, Wear 253 (2002) 994–1003.

DOI: 10.1016/s0043-1648(02)00222-3

[8] M. Surender, B. Basu, R. Balasubramaniam, Wear characterization of electrode-posited Ni–WC composite coatings, Tribology Int. 37 (2004) 743–749.

DOI: 10.1016/j.triboint.2004.04.003

[9] C.G. Fink, J.D. Prince, J. Electrochem. Soc. 54 (1928) 315.

[10] T.W. Tomaszewski, L.C. Tomaszewski, H. Brown, Plating 56 (1969)1234.

[11] A.A. Edigaryan, G.E. Goryunov and E.N. Lubnin: Rus. J. Electrochem. Vol. 40(2004), p.1481.

[12] X.Z. He, X.L. Zhou and X.W. Zhang: Adv. Eng. Mater. Vols. 150-151(2011), p.1555.

[13] C.A. Huang, W. Lin and M.J. Liao: Corros. Sci. Vol. 48(2006), p.460.

[14] C.T.J. Low, R.G.A. Wills and F.C. Walsh: Surf. Coat, Technol. Vol. 201(2006), p.371.

[15] Z.X. Hu, X.H. Jie and G.H. Lu: J. Coat. Technol. Res. Vol. 7(2010), p.809.

[16] S. Ghaziof, M.A. Glozar and K. Raeissi: J. Alloys. Compd. Vol. 496(2010), p.164.

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