Transport phenomena and growth modes of silver electrodeposits
作者： P. Carro , S. Ambrosolio , S.L. Marchiano , A. Hernández Creus , R.C. Salvarezza
DOI: 10.1016/0022-0728(95)04196-U
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摘要: Abstract A systematic investigation of the influences migration, diffusion and convection on growth modes three-dimensional Ag electrodeposits a Pt substrate was made using conventional electrochemical techniques combined with optical scanning electron microscopic observations. The dependence mode dominant mass transport mechanism established. Diffusion migration influence structure deposit. Migration dominates at dendrite tip growth. Convection alters mainly macroscopic Several transitions in could be distinguished. One these related to initiation formation, which appeared when critical amount electrodeposited had been exceeded. precursors observed borders angles hexagonal crystals formed first. These continued grow either as dendrites or lobular branched structures. Another transition corresponded shape deposit dominated by free convection, whereas forced led development rather than dendritic
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