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By Edited by Hongxi Zhu Linjiang Wang

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Conclusions The oxidation kinetics of copper and aluminum alloys containing magnesium was investigated by parabolic rate law and modified Chou model. %) alloys and Al-Mg (AA3004 and AA5182) alloys, the oxidation reaction rate increased with the temperature rising. The addition of Mg has a beneficial effect to the oxidation resistance of copper and aluminum alloy, but the improvement was not proportional to the Mg addition content. 34 shows the highest oxidation activation energy among the four copper alloys, and that is AA3004 for aluminum alloys.

Cobalt is easier to redissolve in solution with oxygen. The redissolution of cobalt will still occur with nitrogen bubbled through the solution, however, the cementation and redissolution rate of cobalt were a little slower under nitrogen than with air. Bubbling nitrogen is the solution is the most common way to deoxygenate, and also to increase the hydrogen overpotential on a cobalt electrode (by 100Mv). Typically deoxygenating with nitrogen is considered a too expensive option for implement industrially.

35 (2010), p. 7842 [10] Kuo-Chih Chou: J Am. Ceram. Soc. Vol. 89 (2006), p. 1568 [11] Li Tiefan: High Temperature Oxidation and Hot Corrosion of Metals (Chemical Industry Press, Beijing 2003). In Chinese. [12] Neil Birks, Gerald H. Meier, Fred S. Pettit: Introduction to the High-Temperature Oxidation of Metals (Cambridge University Press, New York 2006). com Keywords: Flash Smelting Furnace, Reaction Shaft, Freeze Slag, Surface Tension Abstract. According to the reaction shaft operation characteristics during the flash smelting process, 15 groups of slag samples containing high Fe3O4 were prepared by some chemical reagents, and then the slag surface tensions were measured using a RTW-10 type synthetic test instrument for melt physical property by means of suspension link.

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Advances in Metallurgical and Mining Engineering by Edited by Hongxi Zhu Linjiang Wang

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