CAJ | 학술논문

使用以Al粉、Cu粉混合,添加NaCl或无水K_2CO_3的混合配比,并采用燃烧反应合成的方法制备了规则的、具有良好吸声性能的开孔Al-Cu吸声材料.采用扫面电镜及X射线衍射对样品进行表征,并使用驻波管法测其吸声系数.实验结果表明:随着NaCl或无水K_2CO_3含量的增加, Al-Cu吸声材料的孔隙率及吸声系数随之增加;造孔剂为无水K_2CO_3的Al-Cu吸声材料,其吸声性能高于造孔剂为NaCl的;在反应过程中,没有Al、Cu单质残留,完全形成了Al-Cu金属间化合物.超声清洗后NaCl、无水K_2CO_3 均充分溶解.
사용이Al분、Cu분혼합,첨가NaCl혹무수K_2CO_3적혼합배비,병채용연소반응합성적방법제비료규칙적、구유량호흡성성능적개공Al-Cu흡성재료.채용소면전경급X사선연사대양품진행표정,병사용주파관법측기흡성계수.실험결과표명:수착NaCl혹무수K_2CO_3함량적증가, Al-Cu흡성재료적공극솔급흡성계수수지증가;조공제위무수K_2CO_3적Al-Cu흡성재료,기흡성성능고우조공제위NaCl적;재반응과정중,몰유Al、Cu단질잔류,완전형성료Al-Cu금속간화합물.초성청세후NaCl、무수K_2CO_3 균충분용해.
By mixing powder Al and Cu adding NaCl or a mixture of anhydrous K_2CO_3 ratio,this study aims to produce a regular opening Al-Cu sound-absorbing material of good sound-absorbing properties by self-propagating high-temperature synthesis.The obtained materials were characterized by SEM,XRD.And absorption coefficient was tested with standing wave pipe method.The experimental results show: by adding NaCl or anhydrous K_2CO_3 into the Al-Cu based material and then after self-propagating high-temperature synthesis,with the content of NaCl and anhydrous K_2CO_3 increasing,the porosity increases,so does the absorption coefficient of the Al-Cu sound-absorbing material; the acoustic properties of the Al-Cu sound-absorbing material in which K_2CO_3 was taken as pore former are higher than those using NaCl as pore former;there are no residue of Al and Cu after the reaction,all turned into Al-Cu intermetallic compound.NaCl and anhydrous K_2CO_3 have been fully dissolved after ultrasonic cleaning.