泡沫铝累积叠轧制备方法及孔隙结构研究  

Study on preparation method of aluminum foam and pore structures by accumulative roll-bonding

作　　者：王耀奇[1] 侯红亮[1] 姜波[1] 于庆波[2] 

机构地区：[1]北京航空制造工程研究所,北京100024 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《功能材料》2010年第7期1190-1193,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50875294)

摘　　要：以L2纯铝为基体金属,TiH2粉末为发泡剂,通过累积叠轧试验,探索泡沫铝制备的新方法。结果显示,叠轧道次对泡沫铝孔隙率与平均孔径影响显著,叠轧道次越多,孔隙率越高,平均孔径越小;TiH2含量与发泡温度是影响发泡驱动力的主要因素,试验温度范围内,发泡剂含量越大,温度越高,发泡驱动力越强,发泡后孔隙率越高,并且平均孔径也越大。叠轧6道次的L2纯铝,发泡剂含量0.5%(质量分数),在670℃条件下发泡5min,可以获得孔隙率61.4%,平均孔径1.6mm的泡沫铝。上述研究表明,累积叠轧焊是一种有效的泡沫铝制备方法,通过工艺参数的优化,可以获得孔隙均匀,高孔隙率的泡沫铝。New preparation method of aluminum foam was explored by accumulative roll-bonding with L2 pure aluminum as matrix metal and TiH2 powder as blister.The results show that the ARB cycle has significant effect on porosity and average pore size of aluminum foam,so porosity increases and average pore size reduces with ARB cycles increasing.TiH2 content and foaming temperature are major influencing factors for foaming driving forcing.Foaming driving forcing enhances with TiH2 content increasing and foaming temperature improving in the range of test temperature so that both porosity and average pore size increase after foaming.L2 pure aluminum of ARB six cycles containing 0.5wt% TiH2 foams at 670℃ for 5min,through which aluminum foam with 61.4% porosity and 1.6mm average size is produced.Studies mentioned above indicate that accumulative roll-bonding is an effective preparation method of aluminum foam,which can prepare aluminum foam with pore uniformity and high porosity by parameter optimization process.

关 键 词：L2纯铝 累积叠轧 泡沫铝 孔隙结构 

分 类 号：TB34[一般工业技术—材料科学与工程]