Throwing Power in Electrodeposition of Zinc
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概要
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This study was undertaken to examine the throwing power in electrodeposition of zinc onto mild steel for several typical baths containing zinc sulfate and cyanide complex by means of hull cell method and fluorescent X-ray analysis.The results obtained were summarized as follows.(1) It was confirmed by experiments that the throwing power in cyanide bath was much higher than that in sulfate bath, though the latter was fairly improved by addition of some agents, particularly dextrin.(2) Much difference was found in polarization characteristics between sulfate and cyanide baths. Namely, a remarkable polarization was observed in the latter and the addition of dextrin promoted the polarization in the former.(3) The throwing power practically observed agreed well with the calculated values, which had been estimated from Blum's equation on the basis of the slope of polarization curve and specific conductivity in the individual solutions.
- 社団法人 表面技術協会の論文
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