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- Publisher
- Springer Journals
- Copyright
- Copyright © 2009 by Springer Science+Business Media B.V.
- Subject
- Chemistry; Industrial Chemistry/Chemical Engineering; Physical Chemistry ; Electrochemistry
- ISSN
- 0021-891X
- eISSN
- 1572-8838
- DOI
- 10.1007/s10800-009-9816-3
- Publisher site
- See Article on Publisher Site
Abstract
Pulsed electrodeposition (PED) with square wave has successfully been applied to deposit microcrystalline chromium from Cr-dimethylformamide (DMF) bath. The influence of the duty cycle, on-time, off-time, frequency, and pulse peak current on thickness, current efficiency, and hardness were investigated. Based on the analysis of the microstructure, the corrosion behavior of both direct-current deposited (DCD) and pulse-current deposited (PED) chromium in 3.5% NaCl solution was studied using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results indicated that both pulsed electrodeposits and direct-current deposits have high charge transfer resistance R ct and very low I corr compared with mild-steel substrate.
Journal
Journal of Applied Electrochemistry – Springer Journals
Published: Feb 17, 2009