研究了孔隙率及孔径的变化对开孔泡沫铝导电性的影响.采用铸造渗流法制备了孔径为0.75～1.75 mm,相对密度为0.405～0.436的泡沫纯铝,用"直流四端电极"法测量了不同参数泡沫铝的电阻并通过计算得到电导率.实验结果表明:对于开孔泡沫铝来说,孔隙率的变化对其导电性具有非常显著的影响,随着相对密度的提高,泡沫铝的电导率呈指数关系上升;而随孔径的变化对其电导率影响不大.
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