<報文>亜鉛製錬に関する研究(第9報) : 鋳造陽極の鋳込条件と耐食性に関する一実験

概要

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A study was made of corrosion of 1 per cent silver-lead alloy anodes made under various pouring conditions. The anode slowly cooled is easily attacked in the interdendritic network as a result of microsegregation in the lead-silver alloy. So the oxide film of this anode is thick and porous, but very resistive to disintegration of the film. The rapidly cooled anode is evenly corroded and more resistive to corrosion, but is disadvantageous to stability of the oxide film. Therefore, it must be taken into account the fact that the crystal structure of the anode is dendritic, dense and uniform in order to determine the most suitable conditions for anode casting. The occlusion of the dross at anode casting gives little influence on the total corrosion rate, but causes a sudden increase in slime formation.
東北大学の論文
1960-08-25