Saravanan, G. and Mohan, S. (2009) Pulsed electrodeposition of microcrystalline chromium from trivalent Cr-DMF bath. Journal of Applied Electrochemistry, 39 (8). pp. 1393-1397. ISSN 0021-891X

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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 directcurrent deposited (DCD) and pulse-current deposited (PED) chromiumin 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 Rct and very low Icorr compared with mildsteel substrate.

Item Type: Article
Uncontrolled Keywords: Trivalent chromium; Chromium; electrodeposition; Duty cycle; Coatings; Electrochemical impedance spectroscopy (EIS); Porosit
Subjects: Industrial Metal Finishing
Depositing User: TTBD CECRI
Date Deposited: 02 Apr 2012 06:03
Last Modified: 02 Apr 2012 06:03

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