F. I. Danilovz, Yu. E. Sknar, I. G. Tkach, and I. V. Sknar
Ukrainian State University of Chemical Technology, pr. Gagarina 8, Dnepropetrovsk, 39005 Ukraine
Received April 10, 2014
Abstract—It is found experimentally that electrodeposition of coatings from nickel(II)- and cerium(III)-ion-
containing methanesulfonate electrolytes results in formation of nickel-matrix-deposits with cerium-oxide-
compound inclusions. Increase in the cerium(III) concentration in the electrolyte, as well, as in the electrodepo-
sition current density and electrolysis temperature, leads to increase in the cerium content in the deposits. The
experimental data are in good agreement with the nickel–cerium coating formation scheme that implies the
cerium oxide compounds to arise directly at the cathode surface due to pH increase in the near-electrode space
as a result of hydrogen-evolution side reaction. The effect of nanosized cerium-containing oxide particles on
the composite microhardness can be explained theoretically in terms of the dispersive hardening and the hard-
ening caused by grain diminishment.
Keywords: nanocomposite coatings, nickel matrix, methanesulfonate electrolyte, cerium(III)-ions, structure
DOI: 10.1134/S1023193515040023
Pleiades Publishing home page | journal home page | top
If you have any problems with this server, contact webmaster.