Kinetics of electrodeposition of Ni–ZrO2 nanocomposite coatings from methanesulfonate electrolytes
| Autor: | F. I. Danilov, I. V. Sknar, Yu. E. Sknar, N. V. Amirulloeva |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Nanocomposite 020209 energy Inorganic chemistry chemistry.chemical_element Nanoparticle 02 engineering and technology Electrolyte 021001 nanoscience & nanotechnology Electrochemistry Nickel chemistry Phase (matter) Electrode 0202 electrical engineering electronic engineering information engineering Cubic zirconia 0210 nano-technology |
| Zdroj: | Russian Journal of Electrochemistry. 52:494-499 |
| ISSN: | 1608-3342 1023-1935 |
| Popis: | Regularities of incorporation of zirconia nanoparticles into a nickel matrix in the course of electrodeposition of Ni–ZrO2 coatings from methanesulfonate electrolyte are established. The content of the dispersed phase in coatings grows at an increase in its concentration in electrolyte. Moreover, nanocomposites containing a greater amount of zirconia are deposited from the methanesulfonate electrolyte as compared to sulfate electrolyte. This is explained by the greater partial concentration of ZrO2 in the solution due to enhanced aggregative stability of the dispersed phase in methanesulfonate electrolyte. The mechanism of formation of the composite coating is considered that is based on the concept of particle incorporation into the metal matrix due to the different rates of metal electrodeposition on the electrode surface free of nonmetallic particles and on the electrode surface conditionally occupied by them. A physically substantiated mathematical model is suggested that describes the kinetics of formation of the composite coating that agrees well with the experimental data. |
| Databáze: | OpenAIRE |
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