(山东大学 材料液态结构及其遗传性教育部重点实验室，
材料学院工程陶瓷实验室， 材料科学系，
济南 250061)
摘 要: 用热压烧结法制备了纳米Fe3Al粒子增强Al2O3基复合材料。 研究了1450～1600℃不同烧结温度下纳米Fe3Al的加入量与材料的致密度、力学性能及显微结构的关系。 结果表明：纳米Fe3Al的加入可使Al2O3晶粒的生长受到抑制， 使复合材料的烧结温度提高。 Fe3Al/Al2O3纳米复合材料有良好的力学性能， 其抗弯强度最高可达832MPa， 断裂韧性最高可达7.96MPa·m1/2。
关键字: Fe3Al； Al2O3； 纳米复合材料； 热压烧结
（Key Laboratory of Education Ministry for Material Liquid Structure and Heredity, Key Laboratory of Shandong Province for Engineering Ceramics， Shandong University, Jinan 250061, China）
Abstract:Fe3Al nanoparticle toughening Al2O3 matrix composites are fabricated by hot pressing. The effect of hot-pressed temperature and nano-Fe3Al contents on the densifications, mechanical properties and microstructure were researched. The results show that addition of nano-Fe3Al inhibites the growth of Al2O3, therefore the sintered temperature is increased. Fe3Al/Al2O3 nanocomposites exhibit attractive mechanical properties. The best values of bending strength and fracture toughness of the composite are 832MPa and 7.96MPa·m1/2, respectively.
Key words: Fe3Al； Al2O3； nanocomposite； hot pressing
