开孔泡沫金属模型的电导率研究

Study on electrical conductivity of the open metal foam

针对通过熔模铸造法制得的开孔泡沫金属进行研究分析。其模型可以近似简化为十四面体模型,之后根据其结构特点,并引入弯曲因子k,推导得出了电导率与孔隙率之间的数学公式。该公式因值的修正以及节点电阻的考虑,结果也更接近实际值。从而为高孔隙率泡沫金属的电导率的研究及应用提供了帮助。

This article researched and analyzed the open-cell metal foam obtained by investment casting, the model of which can be simplified as the model of tetrakaidecahedral.According to the structural characteristics of the open-cell metal foam, bending factor is introduced,and from it a mathematical formula about conductivity and porosity has been derived.Taking into account of the adjustment value of and the node resistance,it＇s made the formula results closer to the actual value.The results of this article can be helpful for the study and application of the electrical conductivity of the high porosity metal foam.