铸造技术2017，Vol.38Issue(11)：2576-2578,3.DOI:10.16410/j.issn1000-8365.2017.11.004
用氧化钙颗粒制备泡沫铝及其吸声系数检测
Aluminum Foam Prepared with CaO Granules and Testing the Sound Absorption Coefficient
刘晶辉 1陈宗民 1王兆君 1张勇1
作者信息
- 1. 山东理工大学机械工程学院,山东淄博255049
- 折叠
摘要
Abstract
Three new kinds of aluminum foam materials with different pore structure size were prepared with tailor-made low-pressure infiltration device.The technological parameters of the granules preheat temperature was 700 ℃,the infiltration pressure was 0.04 MPa,the aluminum molten temperature was 720 ℃,the particle surface was coated with alcohol and calcium oxide powder mixture to improve the removal performance of aluminum foam and increase the porosity.The sound absorption coefficient of three samples was tested by transfer function method.The results show that the two kinds of aluminum samples have high sound absorption coefficient in the low frequency range by testing all specimens with transfer function method.关键词
CaO颗粒/低压渗流法/泡沫铝/吸声系数Key words
CaO granules/low-pressure infiltration method/aluminum foam/sound absorption coefficient分类
矿业与冶金引用本文复制引用
刘晶辉,陈宗民,王兆君,张勇..用氧化钙颗粒制备泡沫铝及其吸声系数检测[J].铸造技术,2017,38(11):2576-2578,3.
