利用蒸发法和机械合金化法制备纳米Fe-Al金属间化合物  

Preparation of Nanostructured Fe-Al Intermetallics by Vaporing and Mechanical Alloying Methods

作　　者：郝春成[1] 李强[1] 崔作林[1] 尹衍升 

机构地区：[1]青岛科技大学材料与环境科学学院,山东青岛266042 [2]山东大学工程陶瓷实验室,山东济南250061

出　　处：《青岛科技大学学报（自然科学版）》2005年第5期410-412,420,共4页Journal of Qingdao University of Science and Technology:Natural Science Edition

摘　　要：利用两种方法制备了纳米Fe-Al金属间化合物:一种是利用氢电弧等离子体法在自制的设备中以Fe-28Al-5Cr块体材料为原料,利用电弧高温蒸发制备出纳米Fe-Al基金属间化合物,该方法制得的纳米粒子呈球形,平均粒度30 nm,为B2相结构。在600℃真空退火1 h后,纳米粒子发生了B2→DO3相转变;第二种是利用机械合金化方法,将氢电弧等离子体法制备的纳米金属铁、铝单质置于球磨罐中混合湿磨,发现湿磨10 h形成了Fe-Al金属间化合物。Fe-Al nanostructured intermetallics were prepared by two different methods. A hydrogen arc plasma method was employed to evaporate Fe-28A1-5Cr raw intermetallies into nanostructured particles. The shape of the particles prepared by this means, with B2 structure, is spherical and the average size is 40 nm. B2-DO3 phase transforma- tion of nanostructured Fe3 Al was investigated after annealing for 1 h at 600 ℃. Mechanical alloying method was also employed by milling blended nanostructured elemental Fe and Al. The experiments showed that Fe-Al intermetallics are formed after milling for 10 h with ethanol as a lubricant.

关 键 词：纳米粒子 FE-AL金属间化合物 制备 

分 类 号：TG132[一般工业技术—材料科学与工程]