燃烧反应合成Al-Fe基吸声材料  

Al-Fe-Based Sound-Absorbing Materials by Self-Propagating High-Temperature Synthesis

作　　者：李昊涵[1] 王宙[1] 室谷贵之[1] 赵明华[1] 付传起[1] 何湘[1] 李斌[1] 

机构地区：[1]大连大学,辽宁大连116622

出　　处：《稀有金属材料与工程》2010年第A01期146-149,共4页Rare Metal Materials and Engineering

摘　　要：采用燃烧反应合成的方法制备了多孔Al-Fe基吸声材料。通过扫描电镜及X射线衍射对样品进行了表征,并使用驻波管法测其吸声系数。实验结果表明:Al-Fe吸声材料的孔隙率及吸声系数随着添加造孔剂(NaCl或无水K2CO3)含量的增加而增大;造孔剂为无水NaCl的Al-Fe吸声材料,其吸声性能高于造孔剂为K2CO3的Al-Fe吸声材料;反应后样品中没有Al、Fe单质残留,完全形成了Al-Fe金属间化合物。超声清洗后NaCl、无水K2CO3均充分溶解。Al-Fe sound-absorbi characterized by SEM and XRD ng material was produced by self-propagating high-temperature synthesis. The obtained materials were . And the absorption coefficient was tested with standing wave pipe method. The experimental results show that the porosity and the absorption coefficient of the Al-Fe sound-absorbing material increase with the content of NaCI and anhydrous K2CO3 increasing; the acoustic properties of the Al-Fe sound-absorbing material in which NaCl was taken as pore former are higher than those using K2CO3 as pore former; there are no residue of Al and Fe after the reaction, because all turned into Al-Fe intermetallic compound. NaCl and anhydrous K2CO3 have been fully dissolved after ultrasonic cleaning.

关 键 词：燃烧反应合成 Al-Fe基吸声材料 吸声系数 

分 类 号：TB34[一般工业技术—材料科学与工程]