EFFECT OF APPLIED CURRENT DENSITIES ON ELECTRODEPOSITED NI- MO COMPOSITE COATINGS

  • H. BEN TEMAM
  • E. GUETTAF TEMAM

Résumé

Ni-Mo composite coatings were obtained on pretreated copper substrates by electrolytic deposition in which molybdenum
powders were held in suspension. The electrodeposition process was carried out at a current density rang of 100-300 mA/cm2

and a temperature of 303 K during 90 minutes. The surface morphology of the coatings was examined by scanning microscopy
(SEM). X-ray diffraction method was used to determine the phase composition of the layers. The coatings deposited were
uniform and adherent to the substrates. It was revealed that composite coatings are characterized by a fissured and porous
surface in comparison with pure nickel coating deposited. X-ray examination of the Ni-Mo layers indicated that they have a
three phases (MoNi4, Mo1.24Ni0.76 and Ni3Mo) of crystallites of nickel and molybdenum.

Références

[1] B. R. Tian, Y. F. Cheng, electrochim. Acta. 53 (2007)
511.
[2] R. J. Llewelyn, S.K. Yick, K.F. Dolman, Wear. 256
(2004) 592.
[3] J. Kubisztal, A. Bundniok, Int. J. Hydrogen Energy. 33
(2008) 4488.
[4] I. Naploszek-Bilnik, A. Budniok, E. Lagiewka,
Alloys.Compd. 382 (2004) 54-57.
[5] J. Kubisztal, A. Bundniok, Appl. Surface. 252 (2006)
8605.
[6] Hachemi Ben Temam, Larbi Zeroual, Abdelouahad
Chala, Saad Rahmane, Corinne Nouveau, Plasma
Process. Polym. (2007)S618.
[7] P. Beçot, Dépôts composites par électrolyse.
Paramètres et Applications. Techniques de
L’ingénieur.M1623, p. 3.
[8] J. Kubisztal, A. Bundniok, A. Lasia, Int. J. Hydrogen
Energy.32 (2007) 1212.
[9] R. Q. Faratari, A. Robin, Surf. Coat. Technol. 200
(2006)4086.
[10] G. Qiao, T. Jing, N. Wang, Y. Gao, X. Zhao, J.
[11] Zhou, W. Wang, Electrochim. Acta. 51 (2005) 89. [11]
Stephan Armyamov, Electrochim. Acta. 45 (2000)
3323.
[12] N. V. Krstajić, Lj. Gajić-Krstajić, U. Lačnjevac, B. M.
Jović, S. Mora, V. D. Jović, Int. J. Hydrogen Energy.
36 (2011) 6446.
Comment citer
BEN TEMAM, H.; GUETTAF TEMAM, E.. EFFECT OF APPLIED CURRENT DENSITIES ON ELECTRODEPOSITED NI- MO COMPOSITE COATINGS. Courrier du Savoir, [S.l.], v. 18, juin 2014. ISSN 1112-3338. Disponible à l'adresse : >http://revues.univ-biskra.dz/index.php/cds/article/view/643>. Date de consultation : 23 nov. 2020
Rubrique
Articles