Abstract
In the present work, the effect of the complexing agents citrate, glycine and triethanolamine (TEA) on the electrodeposition of Ni-W layers from electrolytes based on NiSO4 and Na2WO4, is investigated. The investigations include measurement of the current efficiencies, determination of the tungsten content in the electrodeposits (by energy dispersive X-ray analysis), voltammetry studies and characterization of complex formation by UV-spectrometry. High W content and current efficiency could be realized by using electrolytes containing all of the three complexing agents. The results show that small amounts of glycine in a citrate-triethanolamine based electrolyte positively influences both the mass-transfer and the deposition potential.
Original language | English |
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Journal | Electrochimica Acta |
Volume | 51 |
Issue number | 5 |
Pages (from-to) | 888-896 |
ISSN | 0013-4686 |
Publication status | Published - 2005 |
Keywords
- complexing agent
- electrodeposition
- XRD patterns
- microstructure
- nickel-tungsten