| Autor: |
Sakhnenko, N., Ved, M., Hapon, Yu., Nenastina, T. |
| Předmět: |
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| Zdroj: |
Russian Journal of Applied Chemistry; Dec2015, Vol. 88 Issue 12, p1941-1945, 5p |
| Abstrakt: |
Finely crystalline cobalt-molybdenum-tungsten coatings were deposited in the nonsteady-state mode from a polyligand citrate-pyrophosphate electrolyte at a concentration ratio of the alloy-forming components Co/(WO + MoO) = 1: 1 and citrate/pyrophosphate ligands of 1: 2. It was found that the quantitative composition and current efficiency by the ternary alloy depends on the current density. The effect of energy- and time-related parameters of the pulsed electrolysis on the surface morphology and roughness was studied. It was shown that, as the total content of refractory metals in Co-Mo-W coatings increases, the corrosion rate decreases in the acid medium and increases in the alkaline medium because of the instability of molybdenum and tungsten oxides. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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