机械合金化制备FeNbVB纳米晶粉末的研究
Nanocrystalline FeNbVB Powder Prepared by Mechanical Alloying
摘 要
采用机械合金化法制备了Fe84Nb3V4B9纳米晶粉末,并利用扫描电镜、X射线衍射仪等对其形貌、结构和热稳定性进行了分析.结果表明：组分为Fe84Nb3V4B9的混合粉体在球磨96h后,α-Fe相平均晶粒尺寸约为10nm;此后于100~350℃退火没有新相生成,并且纳米晶粒无明显长大,表现出较好的热稳定性;钒元素的加入能够增加粉末的均匀性、细化晶粒、加速合金化过程以及增加合金相的耐热稳定性,因此,钒部分替代铌制备FeMB纳米晶软磁材料具有明显的可行性和经济效益.
FeNbVB
纳米晶
机械合金化
FeNbB
FeNbVB
nanocrystalline
mechanical alloying
Abstract
Nanocrystalline Fe84Nb3V4B9 powders were prepared by mechanical alloying.The morphology,structure and thermal stability were studied by SEM observation,XRD analysis and heat treatment.The average grain size of α-Fe phase in Fe84Nb3V4B9 powders milled for 96h was about 10 nm.The nanocrystals exhibited good thermostability,and grew slowly during low-temperature annealing at 100-350℃.The V addition could improve powder uniformity,refine crystals,promote alloying process and enhance thermal stability of the alloy phase,suggesting that the replacement of V for Nb is beneficial to development of FeMB nanocrystalline soft magnetic materials.
中图分类号 TG139
所属栏目
基金项目 国家“十五”科技攻关资助项目(2001BA310A03-1)
收稿日期 2005/3/21
修改稿日期 2005/6/15
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备注曹玲飞(1977-),女,湖南郴州人,博士研究生.
引用该论文: CAO Ling-fei,WANG Ming-pu,XIE Dan,GUO Ming-xing,XU Gen-ying. Nanocrystalline FeNbVB Powder Prepared by Mechanical Alloying[J]. Materials for mechancial engineering, 2006, 30(5): 87～90
曹玲飞,汪明朴,谢丹,郭明星,徐根应. 机械合金化制备FeNbVB纳米晶粉末的研究[J]. 机械工程材料, 2006, 30(5): 87～90
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参考文献
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【8】Makino A,Inoue A,Masumoto T.Nanocrystalline soft magnetic Fe-M-B (M=Zr,Hf,Nb) alloys produced by crystallization of amorphous phase[J].Mater Trans JIM,1995,36(7):924-938.
【9】Kojima A,Hidehiko H,Makino A,et al.Soft-magnetic properties of nanocrystalline bcc Fe-(Nb,Zr)-B bulk alloys consolidated by warm extrusion[J].Mater Trans JIM,1995,36(7):945-951.
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【13】居 毅,李宗权.机械合金化的原理及在磁性材料研究中的应用[J].功能材料,2002,33(1):12-14.
【14】Herzer G.Magnetization process in nanocrystalline ferromagnets[J].Mater Sci and Engi,1991,A133:1-5.
【15】Bitoha T,Makino A,Inoue A.The effect of grain-size distribution on coercivity in nanocrystalline soft magnetic alloys[J].J of Magn and Magn Mater,2004,272-276:1445-1446.
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