TITLE

Measurement of Polarization Parameters Impacting on Electrodeposit Morphology. II: Conventional Zinc Electrowinning Solutions

AUTHOR(S)
Adcock, P.A.; Quillinan, A.; Clark, B.; Newman, O.M.G.; Adeloju, S.B.
PUB. DATE
August 2004
SOURCE
Journal of Applied Electrochemistry;Aug2004, Vol. 34 Issue 8, p771
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A new technique for measuring effects of polarization modifiers on nucleation potential and plating potential in polycrystalline electrodeposition was presented in Part I of this series (J. Appl. Electrochem. 32 (2002) 1101-1107). This paper presents the results of application of the proposed technique to conventional zinc electrowinning. Strong correlations are observed between deposit metallographic structure and the polarization characteristics. The results demonstrate that the new galvano-staircase method can be used to predict long-term (i.e. substrate-independent) deposit morphology, based on relatively rapid electrochemical measurements. With sufficient knowledge of the system, beneficial changes can be specified for additives, particularly long term averages. However even interactive, control on an hourly basis should be possible.
ACCESSION #
15102864

 

Related Articles

  • Growth of highly oriented ZnO films by the two-step electrodeposition technique. Gao, Xiang-Dong; Peng, Fang; Li, Xiao-Min; Yu, Wei-Dong; Qiu, Ji-Jun // Journal of Materials Science;Dec2007, Vol. 42 Issue 23, p9638 

    Compact and transparent ZnO films were deposited on the ITO/glass substrates from zinc nitrate aqueous solution by the two-step electrodeposition technique. While the first potentiostatic step was used to produce ZnO seed layer, the ZnO film growth has been done galvanostatically. Effects of the...

  • Electroplating: Panel and Pattern Plating, Part 1. Carano, Michael // Printed Circuit Design & Manufacture;May2008, Vol. 25 Issue 5, p18 

    The article describes the intricacies of electrodeposition technology and its function of building up the thickness of copper in the through holes and on the board surface. The buildup of the conductive layer to a desired thickness is achieved by the electrodeposition of copper, which is in...

  • Electrodeposition of zinc-nickel-carbon nanotubes composite coatings in a reversing mode. Tseluikin, V.; Koreshkova, A. // Protection of Metals & Physical Chemistry of Surfaces;Nov2016, Vol. 52 Issue 6, p1040 

    Composite electrochemical coatings (CECs) made of zinc-nickel-carbon nanotubes have been obtained in a reversing regime. The structure and functional properties of these CECs have been investigated. It has been established that introduction of carbon nanotubes into the deposition electrolyte of...

  • Preparation and Characterisation of Electrodeposited Ni–Cu/Cu Multilayers. Alperi, M.; Baykul, M.C.; Péter, L.; Toth, J.; Bakonyi, I. // Journal of Applied Electrochemistry;Aug2004, Vol. 34 Issue 8, p841 

    Ni-Cu/Cu multilayers have been, grown from a single electrolyte under potentiostatic conditions at different electrolyte pH values. The current-time transients recorded during deposition indicated different growth modes of the Ni-Cu layers. Structural characterisation by X-ray diffraction...

  • Effects of SiC and Al2O3 particles on the electrodeposition of Zn, Co and ZnCo. I. Electrodeposition in the absence of SiC and Al2O3. Tulio, Paulo; Carlos, Ivani // Journal of Applied Electrochemistry;Feb2009, Vol. 39 Issue 2, p283 

    Electrodeposition of Zn, Co and ZnCo from acid sulfate solutions onto steel was investigated in this first part of a study of the effects of SiC or Al2O3 particles on these processes and the formation of ZnCo–SiC and ZnCo–Al2O3 electrocomposites. Zn electrodeposition shows a...

  • Coexistence of unipolar and bipolar resistive switching characteristics in ZnO thin films. Seunghyup Lee; Heejin Kim; Jinjoo Park; Kijung Yonga // Journal of Applied Physics;Oct2010, Vol. 108 Issue 7, p076101 

    This paper reports the coexistence of unipolar and bipolar resistive switching (BRS) in an Ag/ZnO/Pt structure fabricated by sputtering deposition at room temperature. The structure shows reproducible and stable unipolar resistive switching after electroforming with high compliance current...

  • Investigation of optimal conditions for zinc electrowinning from aqueous sulfuric acid electrolytes. Guillaume, P.; Leclerc, N.; Boulanger, C.; Lecuire, J. M.; Lapicque, François // Journal of Applied Electrochemistry;Nov2007, Vol. 37 Issue 11, p1237 

    Results are reported of an experimental investigation of the effects of aqueous zinc(II) and sulfuric acid concentrations on current efficiencies and deposit morphologies of metallic zinc, aimed at designing a process for zinc recovery from solid industrial wastes by leaching and...

  • Copper electrodeposition localized in picoliter droplets using microcantilever arrays. Leïc;hlé, T.; Nicu, L.; Descamps, E.; Corso, B.; Mailley, P.; Livache, T.; Bergaud, C. // Applied Physics Letters;6/19/2006, Vol. 88 Issue 25, p254108 

    A patterning tool that allows electrochemical reactions to take place inside microdroplets is introduced. This tool relies on the use of a microfabricated array of silicon cantilevers that incorporate a channel into which a gold electrode is patterned. The deposition process consists in forming...

  • Correlation between diode polarization and resistive switching polarity in Pt/TiO2/Pt memristive device. Gao, Ligang; Hoskins, Brian; Strukov, Dmitri // Physica Status Solidi - Rapid Research Letters;May2016, Vol. 10 Issue 5, p426 

    We have investigated the correlation between diode polarization and switching polarity in electroformed Pt/TiO2/Pt memristive device. Before forming, the diode direction of the Pt/TiO2/Pt device is reversible under the current pulses with varying current amplitude. The diode polarization arises...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics