【摘要】 研究了包沫铝消音性能及其随孔隙结构及成形方法的变化情况。结果表明：泡沫铝在０．１２５～１６ｋＨｚ范围内均具有较好的消音作用；其消音效果受其孔隙结构和成形方法所影响，孔径为１．６～３．２ｍｍ和０．６３～０．８ｍｍ试样的消音效果最佳，孔隙率大的消音效果更优，成形体法泡沫铝的消音性能明显优于散粒子法泡沫铝。更多还原

【Abstract】 The influence of pore-structural parameters of foam Al-alloys and processing methods of Al-alloys on sound absorption properties has been studied. The results show that foam Al-alloys hay good sound absorption properties in 0. 125～16kHz. The average values of sound absorption is between 15～35dB,the maximum value is46dB. Thus,foam Al-alloys is a kind of good sound absorption materials更多还原