详细信息
文献类型:期刊文献
中文题名:Fe_3Al金属间化合物多孔材料的孔隙特征
英文题名:Porosity of Fe_3Al Intermetallic Porous Materials
作者:陈斌[1];庞厚君[1];张修庆[1];叶以富[1]
机构:[1]华东理工大学机械与动力工程学院,上海200237
年份:2008
卷号:32
期号:5
起止页码:33
中文期刊名:机械工程材料
外文期刊名:Materials For Mechanical Engineering
收录:CSTPCD;;北大核心:【北大核心2004】;CSCD:【CSCD2011_2012】;
基金:上海市科委纳米专项资金资助项目(0452nm036)
语种:中文
中文关键词:Fe3Al金属间化合物;多孔材料;孔隙率;渗透性
外文关键词:Fe3Al intermetallics; porous material; porosity; penetrability;
摘要:通过在Fe3Al粉末中添加挥发性造孔剂,利用粉末冶金技术制备了Fe3Al金属间化合物多孔材料,研究了其孔隙特性和成孔机理,并通过计算分析了孔隙比表面积及平均有效孔径。结果表明:随着Fe3Al多孔材料的开孔隙率不断增加,材料比表面积不断减小,平均有效孔径不断增大;通过近似计算,得出添加25%聚甲基丙烯酸甲酯(PMMA)的试样平均有效孔径达到21.6μm,比表面积超过2 000 cm2.cm-3;Fe3Al多孔材料内部大孔壁上的微孔可以帮助造孔剂顺利挥发排除,也可以增加Fe3Al多孔材料比表面积和渗透性能。
The Fe3Al intermetallic porous materials were fabricated by means of powder metallurgy process.The properties of pores and the pore-forming mechanism were studied.The specific area and average effective pore radius were analyzed by simulation.The results show that with the increase of open porosity,the specific area decreased and the average effective pore radius increased,the average effective pore radius and specific area of 25wt%PMMA are 21.6 μm and more than 2 000 cm2·cm-3 respectively.The very small po...
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