Influence of lead ions on the macromorphology of electrodeposited zinc

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The morphology of zinc as it is electrodeposited from acid solutions demonstrates a remarkable imprint of electrolyte flow conditions. The development of macromorphology of zinc deposits has been investigated under galvanostatic conditions on a rotating plantinum disk electrode by use of photomacrography, scanning electron microscopy, electron probe microanalysis and Auger microprobe analysis. Logarithmic spiral markings, which reflect the hydrodynamic flow on a rotating disk, appear in a certain region of current density well below the limiting current density. Morphological observations revealed the major influence of trace lead ions on the amplifications of surface roughness through coalescence and preferred growth of ... continued below

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Tsuda, T. & Tobias, C.W. September 1, 1981.

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The morphology of zinc as it is electrodeposited from acid solutions demonstrates a remarkable imprint of electrolyte flow conditions. The development of macromorphology of zinc deposits has been investigated under galvanostatic conditions on a rotating plantinum disk electrode by use of photomacrography, scanning electron microscopy, electron probe microanalysis and Auger microprobe analysis. Logarithmic spiral markings, which reflect the hydrodynamic flow on a rotating disk, appear in a certain region of current density well below the limiting current density. Morphological observations revealed the major influence of trace lead ions on the amplifications of surface roughness through coalescence and preferred growth of initial protrusions. Results obtained from ultra-pure electrolyte suggest preferred crystal growth towards well-mixed orientation in the concentration field caused by slight differences in crystallization overpotential. A qualitative model involving a coupling mechanism between the evolving surface roughness and instability phenomena in the boundary layer is advanced to explain the formation of spiral patterns.

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NTIS, PC A06/MF A01.

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  • Other Information: Thesis

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  • Other: DE82002696
  • Report No.: LBL-13057
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/5827437 | External Link
  • Office of Scientific & Technical Information Report Number: 5827437
  • Archival Resource Key: ark:/67531/metadc1096666

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • September 1, 1981

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  • Feb. 18, 2018, 3:59 p.m.

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  • April 4, 2018, 12:43 p.m.

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Tsuda, T. & Tobias, C.W. Influence of lead ions on the macromorphology of electrodeposited zinc, thesis or dissertation, September 1, 1981; United States. (digital.library.unt.edu/ark:/67531/metadc1096666/: accessed April 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.