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| Thermodynamics Properties of Ternary Bath of Coloring Hot--Dip Galvanization |
| LE Qichi; CUI Jianzhong |
| Key Lab of Electromagnetic Processing of Materials; Ministry of Education; Northeastern University; Shenyang 110004 |
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Cite this article:
LE Qichi; CUI Jianzhong. Thermodynamics Properties of Ternary Bath of Coloring Hot--Dip Galvanization. Acta Metall Sin, 2006, 42(11): 1182-1186 .
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Abstract The activities and activity interaction parameters of two kinds of ternary alloy baths, Zn-Mn-Me and Zn-Ti-Me, were calculated by use of Shuanglin Chen model and Zhongting Ma expression. The results indicate that the activity of color generation element Mn or Ti increased as addition of Ni or Cu, where the effect of Ni is superior to Cu, however, the addition of Ti decreased the activity of Mn in Zn-Mn bath, and the opposite behavior for Mn in Zn-Ti. There is an inevitable relationship between the activity of components and color generation effectiveness. That is to say, the additives which can increase the activities of color generation elements would be in favor of improving the combination properties of hot-dip bath, and finally of color generation effectiveness. Therefore, Mn, Ni, and Cu are favorable elements for coloring hot-dip bath, and the advantages and disadvantages of Ti are related with its concentration, which is consistent with the results of technology experiments.
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Received: 18 May 2006
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