Structure and properties of Ni—Co alloys electrodeposited from methanesulfonate electrolytes

  • F. I. Danilov
  • V. N. Samofalov
  • I. V. Sknar
  • Yu. E. Sknar
  • A. S. Baskevich
  • I. G. Tkach
New Substances, Materials, and Coatings

Abstract

Comparative analysis of the structure and properties of Ni—Co alloys deposited from methanesulfonate and sulfate electrolytes showed that coatings produced from the methanesulfonate electrolyte are characterized by a more distorted crystalline lattice and enhanced physicochemical properties. The distinctive feature ofthe methanesulfonate electrolyte is its weak buffer properties that results in the formation in the near-electrode space the great amount of hydroxide compounds embedded in the cathode deposit. These particles adsorbing at crystallite boundaries complicate the dislocation yield and the crystallite growth. As a result of that, the electrodeposition of coatings from the methanesulfonate electrolyte gives deposits with the increased microhardness and internal stresses. The excess amount of the nonmetallic phase in the intercrystalline space can be used for the purpose of making deposits with the required magnetic properties. Electrodeposition of such coatings can be used during the production of magnetic screens and magnetic circuits.

Keywords

Cobalt Coercive Force Magnetic Circuit Methanesulfonate Magnetic Hysteresis Loop 

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References

  1. 1.
    Golodnitsky, D., Rosenberg, Yu., and Ulus, A., Electrochim. Acta, 2002, vol. 47, p. 2707.CrossRefGoogle Scholar
  2. 2.
    Goldbach, S., De Kermadec, R., and Lapicque, F., J. Appl. Electrochem., 2000, vol. 30, p. 277.CrossRefGoogle Scholar
  3. 3.
    Orinakova, R., Turonova, A., Kladekova, D. et al., J. Appl. Electrochem., 2006, vol. 36, p. 957.CrossRefGoogle Scholar
  4. 4.
    Gomez, E., Ramirez, J., and Valles, E., J. Appl. Electrochem., 1998, vol. 28, p. 71.CrossRefGoogle Scholar
  5. 5.
    Grande, W. and Talbot, J.B., J. Electrochem. Soc., 1993, vol. 140, p. 679.Google Scholar
  6. 6.
    Sasaki, K.Y. and Talbot, J.B., J. Electrochem. Soc., 2000, vol. 147, p. 189.CrossRefGoogle Scholar
  7. 7.
    Walter, R.J., Plat. Surf. Finish., 1980, vol. 46, no. 7, p. 46.Google Scholar
  8. 8.
    Goldbach, S., De Kermadec, R., and Lapicque, F., J. Appl. Electrochem., 2000, vol. 30, p. 277.CrossRefGoogle Scholar
  9. 9.
    Danilov, F.I., Sknar, I.V., and Sknar, Yu. E., Russ. J. Electrochem., 2011, vol. 47, p. 1035.CrossRefGoogle Scholar
  10. 10.
    Danilov, F.I., Sknar, I.V., and Sknar, Yu.E., Russ. J. Electrochem., 2014, vol. 50, p. 293.CrossRefGoogle Scholar
  11. 11.
    Danilov, F.I., Tkach, I.G., Sknar, I.V., and Sknar, Yu.E., Prot. Met. Phys. Chem. Surf., 2014, vol. 50, no. 5, p. 639.CrossRefGoogle Scholar
  12. 12.
    Danilov, F.I., Sknar, I.V., and Sknar, Yu.E., Gal’vanotekh. Obrab. Poverkhn., 2012, vol. 20, no. 4, p. 29.Google Scholar
  13. 13.
    Chernyshova, I.S., Maksimenko, S.A., and Kudryavtsev, V.N., Gal’vanotekh. Obrab. Poverkhn., 1996, vol. 4, no. 3, p. 12.Google Scholar
  14. 14.
    Gernon, M.D., Wu, M., Buszta, T., and Janney, P., Green Chem., 1999, no. 6, p. 127.CrossRefGoogle Scholar
  15. 15.
    Kotik, F.I., Uskorennyi kontrol’ elektrolitov, rastvorov i rasplavov (Accelerated Control of Electrolytes, Solutions, and Melts), Moscow: Mashinostroenie, 1978.Google Scholar
  16. 16.
    Gorelik, S.S., Skakov, Yu.A., and Rastorguev, L.N., Rentgenograficheskii i elektronnoopticheskii analiz (X-Ray and Electrooptical Analysis), Moscow: Nats. Issled. Tekhnol. Univ., 1994.Google Scholar
  17. 17.
    Mirkin, L.I., Spravochnik po rentgenostrukturnomu analizu polikristallov (Handbook on X-Ray Analysis of Polycristals), Moscow: Fizmatlit, 1961.Google Scholar
  18. 18.
    Shmeleva, N.M., Kontroler rabot po metallopokrytiyam (Inspector of Metal Coating Processes), Moscow: Metallurgiya, 1966.Google Scholar
  19. 19.
    Popereka, M.Ya., Vnutrennie napryazheniya elektroliticheski osazhdaemykh metallov (Inner Tensions in Plating Metals), Novosibirsk: Zapad.-Sib. Knizh. Izd., 1966.Google Scholar
  20. 20.
    Gamburg, Yu.D., Gal’vanicheskie pokrytiya. Spravochnik po primeneniyu (Galvanic Coatings: Practical Handbook), Moscow: Tekhnosfera, 2006.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  • F. I. Danilov
    • 1
  • V. N. Samofalov
    • 1
  • I. V. Sknar
    • 1
  • Yu. E. Sknar
    • 1
  • A. S. Baskevich
    • 1
  • I. G. Tkach
    • 1
  1. 1.Ukrainian State University of Chemical EngineeringDnepropetrovskUkraine

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