对多孔铝的空气声吸收性能进行了研究.结果表明:多孔铝具有较高的空气声吸收系数,并且与孔结构密切相关.声吸收系数在低频端(＜1 kHz)较低,高频端(＞1 kHz)则可达到0.85以上.随着孔隙率、孔径的减小,多孔铝的共振吸声系数有所下降,吸声频谱曲线向低频方向移动,且频带宽度展宽.
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