Thermophysical properties of Al and Mg alloys for metal foam fabrication
Thermophysical properties of Al and Mg alloys for metal foam fabrication
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DOI：
10.1016/j.colsurfa.2005.02.003
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发表时间：
2005-08
期刊：
影响因子：
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通讯作者：
Soo-Han Park;Yong-su Um;Chang-Hoon Kum;B. Hur
中科院分区：
文献类型：
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作者：
Soo-Han Park;Yong-su Um;Chang-Hoon Kum;B. Hur
流变性是泡沫金属制造中最重要的因素。在纯Ar和SF6+CO2气氛下，测定了再生铝合金和镁铝合金(AM60)的表面张力(环法)和粘度(旋转法)。结果表明，这些合金的表面张力和粘度均随温度升高而降低。硅、铜、锌的加入降低了纯Al的表面张力，增加了其粘度。这种反常行为与高活性元素在表面的优先吸附有关。
The rheological characteristics are the most important factors in the metal foam manufacturing. The surface tension (by the ring method) and the viscosity (by the rotation method) of recycled Al alloys and Mg–Al alloy (AM60) have been measured under pure Ar or SF6+CO2atmosphere. The results show that the surface tension and the viscosity of these alloys decrease with increasing temperature together. The addition of Si, Cu and Zn to pure Al decrease the surface tension and increase the viscosity. This anomalous behavior has the relation of the preferential adsorption of high activity elements on the surface.