DC Current Electrodeposition of High Mo Content Ni-Mo Alloy Coatings from Alkaline Solutions

Abstract:

The binary Ni-Mo alloy coatings of high Mo content were obtained on a steel substrate by dc current electrodeposition from alkaline solutions of pH 7.5-9.0. The pyrophosphate baths contained nickel chloride as a source of nickel ions, and dihydrate sodium molybdate supplied molybdenum. The constant current electrodpeposition at the deposition current denisty of j_d = 30-240 mA cm^-2 was performed at 60°C. The physical and chemical properties of the obtained electrocoatings were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and X-ray fluorescence (XRF) methods. All obtained Ni-Mo alloys reveal the amorphous structure, and their chemical composition strongly depends on the operating parameters of electrodeposition. The maximal content of Mo was found to be 45 at.%. The complicated mechanism of the induced co-deposition of the Ni-Mo alloy, has been discussed.

• Periodical: Solid State Phenomena (Volume 228)
• Pages: 116-124
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.228.116
• Online since: March 2015
• Authors: Bożena Łosiewicz*, Grzegorz Dercz, Magdalena Popczyk
• Keywords: Alkaline Solutions, Electrocoatings, Electrodeposition, Ni-Mo Alloy

References

[1] N.V. Krstajić, V.D. Jović, Lj. Gajić-Krstajić, B.M. Jović, A.L. Antozzi G.N. Martelli: Int. J. Hydrogen Energ. Vol. 33 (2008), p.3676.

DOI: 10.1016/j.ijhydene.2015.06.127

[2] A. Lasia, in: Handbook of Fuel Cells – Fundamentals, Technology and Applications, Vielstich W., Gasteiger H.A., Lamm A. (Eds. ), Vol. 2: Electrocatalysis, John Wiley & Sons, Ltd., Chichester, 2003, pp.416-440.

[3] Q. Han, S. Cui, N. Pu, J. Chen, K. Liu, X. Wei: Int. J. Hydrogen Energ. Vol. 35 (2010), p.5194.

[4] O. Aaboubi: Int. J. Hydrogen Energ. Vol. 36 (2011), p.4702.

[5] P. Kedzierzawski, D. Oleszak, M. Janik-Czachor: Mater. Sci. Eng. A Vol. 300 (2001), p.105.

[6] D. Oleszak, V.K. Portnoy, H. Matyja: Mater. Sci. Forum Vol. 312 (4) (1999), p.345.

[7] S.D. De la Torre, D. Oleszak, A. Kakitsuji, K. Miyamoto, H. Miyamoto, R. Martínez-S., F. Almeraya-C., A. Martínez-V., D. Rios-J.: Mater. Sci. Eng. A Vol. 276 (2000), p.226.

DOI: 10.1016/s0921-5093(99)00156-2

[8] G.L. Goswami, S. Kumar, R. Galun, B.L. Mordike: Lasers Eng. Vol. 13 (2003), p.1.

[9] N. Eliaz, E. Gileadi, Induced Codeposition of Alloys of Tungsten, Molybdenum and Rhenium with Transition Metals, in: Modern Aspects of Electrochemistry, Vol. 41, C.G. Vayenas and R.E. White (Eds. ), Springer, (2006).

DOI: 10.1007/978-0-387-49489-0_4

[10] E. Beltowska-Lehman, P. Indyka: Thin Solid Films Vol. 520 (2012), p. (2046).

DOI: 10.1016/j.tsf.2011.10.024

[11] M.H. Allahyarzadeh, B. Roozbehani, A. Ashrafi: Electrochim. Acta Vol. 56 (2011), p.10210.

[12] M. Donten, H. Cesiulis, Z. Stojek: Electrochim. Acta Vol. 50 (2005), p.1405.

[13] E. Beltowska-Lehman, A. Bigos, P. Indyka, M. Kot: Surf. Coat. Technol. Vol. 211 (2012), p.67.

[14] L.S. Sanches, S.H. Domingues, C.E.B. Marino, L.H. Mascaro: Electrochem. Commun. Vol. 6 (2004), p.543.

[15] M.H. Allahyarzadeh, B. Roozbehani, A. Ashrafi, S.R. Shadizadeh: Surf. Coat. Technol. Vol. 206 (2011), p.137.

[16] V.D. Jović, B.M. Jović, G.R. Stafford, N.V. Krstajić, Z. Twardowski, Composition and Morphology Changes and Their Influence on Hydrogen Evolution on Ni-Mo and Fe-Mo Alloys Electrodeposited by DC and Pulsed Current, in: SURFIN 2002, Chicago, 2002, pp.76-84.

[17] I. Napłoszek-Bilnik, A. Budniok, B. Łosiewicz, L. Pająk, E. Łągiewka: Thin Solid Films Vol. 474 (2005), p.146.

DOI: 10.1016/j.tsf.2004.08.175

[18] N.W. Hovey, A. Krohn, G.M. Hanneken Jr.: J. Electrochem. Soc. Vol. 110 (1963), p.362.

[19] D.W. Ernst, R.F. Amlie, M.L. Holt: J. Electrochem. Soc. Vol. 102 (1955), p.461.

[20] L.S. Sanches, S.H. Domingues, A. Carubelli, L.H. Mascaro: J. Braz. Chem. Soc. Vol. 14 (2003), p.556.