Preparation of Electrodeposited Mo-Ni Coating in Weak Acid Solution

Abstract:

Mo-Ni coatings were prepared on Ni alloy by electrodeposition method. The effects of sodium fluoride mass concentration, sodium chloride mass concentration, sodium molybdate mass concentration and pH value on deposition rate of Mo-Ni coating were researched, respectively. The morphology of Mo-Ni coatings were characterized with scanning electron microcopy (SEM). When sodium fluoride mass concentration is 12 g/L, deposition rate of Mo-Ni coating is as high as 0.3781 mg/cm²·min. When sodium chloride mass concentration is 22.3 g/L, deposition rate of Mo-Ni coating is as high as 0.2108 mg/cm²·min. When sodium chloride mass concentration, sodium molybdate mass concentration and pH value are 22.3 g/ L, 12 g/L and pH 5 respectively, deposition rate of Mo-Ni coating is as high as 0.2123 mg/cm²·min. There are many cracks and pits on the surface Mo-Ni coating deposited in the bath without adding NaCl or NaF, and coating surface is very uneven. The surface Mo-Ni coating deposited in the bath adding NaCl is smooth, and the grains of Mo-Ni coating is small. The surface Mo-Ni coating deposited in the bath adding NaF is smooth, and there are many nodules on the surface Mo-Ni coating.

• Periodical: Applied Mechanics and Materials (Volumes 556-562)
• Pages: 425-428
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.556-562.425
• Online since: May 2014
• Authors: Xiao Zhen Liu*, Jun Liang Feng, Yi Fan Luo, Xiao Zhou Liu, Jie Chen, Lu Ding
• Keywords: Coating, Deposition Rate, Electrodeposition, Morpholoy

References

[1] A.P. Raheleh, S.R. Reza, M. Reza, J. Hossein: Materials & Design Vol. 57 (2014), p.336.

[2] X.Z. Liu, L.P. Xiong, X.Z. Liu, L.Y. Luo, et al.: Spectroscopy and Spectral Analysis Vol. 34 (2014), p.298.

[3] M. Gupta, N. Curry, P. Nylén, et al.: Surface and Coatings Technology Vol. 220 (2013), p.20.

[4] A. Joulia, M. Vardelle, S. Rossignol: Journal of the European Ceramic Society Vol. 33 (2013), p.2633.

[5] H. Waki, I. Nishikawa, A. Kobayashi: Vacuum Vol. 88 (2013), p.93.

[6] I. Keller, D. Naumenko, W.J. Quadakkers, et al.: Surface and Coatings Technolog Vol. 215 (2013), p.24.

[7] H. Chen, T.H. Hyde, K.T. Voisey, et al.: Materials Science and Engineering: A Vol. 585 (2013), p.205.

[8] P. Song, D. Naumenko, R. Vassen: Surface and Coatings Technology Vol. 221 (2013), p.207.

[9] A.A. Shokati, N. Parvin, N. Sabzianpour, et al.: Journal of Alloys and Compounds Vol. 549 (2013), p.141.

[10] C.Y. Ho, R.B. Patil, C.C. Wang, et al.: Surface Science Vol. 606 (2012), p.1173.

[11] F.R. Lamastra, I. Cacciotti, A. Bellucci, et al.: Intermetallics Vol. 22 (2012), p.241.

[12] M. Song, H.B. Guo, M. Abbas, et al.: Surface and Coatings Technolog Vol. 216 (2013), p.1.

[13] C.A. Botero, E. Jimenez-Piqué, R. Martín, et al.: Surface and Coatings Technology Vol. 239 (2014), p.49.

[14] X.Z. Liu, X. Li, A.B. Yu, et al.: Journal of Rare Earths Vol. 27 (2009), p.480.

[15] X.Z. Liu, J. Chen: C.N. Patent, CN 201110382777. 5, 2011-11-28.