Mo_2FeB_2粉体的制备研究及铁源对其微观结构的影响  

The preparation of Mo_2FeB_2 and the influence of different Fe-source on microstructure

作　　者：王杰[1] 叶金文[1] 刘颖[1] 王斌[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610065

出　　处：《功能材料》2013年第1期99-102,共4页Journal of Functional Materials

基　　金：国家自然科学基金青年科学基金资助项目(51104103);四川省科技成果转化资助项目(2011CGZ0054)

摘　　要：以钼粉、羰基铁粉、无定形硼粉和硼铁粉为原料,采用真空烧结法制备了Mo2FeB2粉体。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)分析产物的物相演变规律和微观形貌,取得以下结果:在1400℃下反应2h可以得到相组成单一的Mo2FeB2粉体;用硼铁粉代替羰基铁粉为铁源可以大幅降低反应产物的颗粒和晶粒尺寸,并减少其晶格畸变,制备的Mo2FeB2粉体颗粒尺寸为5μm左右,晶粒尺寸在64nm左右。Mo2FeB2 powders were synthesized from Mo powders,carbonyl iron powders and amorphous B powders by sintering in the vacuum.The phase evolution process was analyzed by X-ray diffraction（XRD） and the microstructure was analyzed by scanning electron microscopy（SEM）.The experiment results show that relatively pure Mo2FeB2 powders can be synthesize through heating at 1400℃ for 2h.Moreover,the particle size,grain size and lattice distortion can be decreased remarkably by using FeB powders,instead of carbonyl iron powders,as Fe-source.And the particle size of synthesized Mo2FeB2 was about 5μm while the grain size was about 64nm.

关 键 词：Mo2FeB2 真空烧结 三元硼化物 相变 

分 类 号：TF123[冶金工程—粉末冶金]