Fe_(67-x)Nb_5B_(28)Cu_x合金的非晶形成能力、热稳定性和电阻率研究
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摘要
采用单辊甩带法制备了Fe_(67-x)Nb_5B_(28)Cu_x(x=0.5、1.0、2.0,摩尔分数)非晶合金,利用X射线衍射仪(XRD)、差示扫描量热仪(DSC)和四探针测试仪研究了Cu含量对合金热稳定性和电阻率的影响。结果发现,Fe基非晶合金的晶化过程与合金中的Cu含量有关,随着Cu含量的增加,合金的非晶形成能力和热稳定性降低。Fe_(66.5)Nb_5B_(28)Cu_(0.5)合金具有大的非晶形成能力以及高热稳定性,其过冷液相区宽度和晶化起始温度分别为39和929K。Fe_(67-x)Nb_5B_(28)Cu_x非晶合金的电阻率为119～138μΩ·cm,合金电阻率随Cu含量的变化规律与非晶形成能力(GFA)一致。
The Fe_(67-x)Nb_5B_(28)Cu_x(x=0.5,1.0,2.0)(atomic fraction,%)amorphous ribbons have been prepared successfully by melt-spinning.The influences of Cu content on thermal stability and electrical resistivity were investigated by X-ray diffractometer(XRD),differential scanning calorimetry(DSC)and four-point tester.The results indicate that the crystallization process is directly related with Cu content,where with the increase of Cu content,the glass forming ability and thermal stability are decreased in the Fe_(67-x)Nb_5B_(28)Cu_(x )alloys.The Fe_(66.5)Nb_5B_(28)Cu_(0.5)glassy alloy exhibits the excellent GFA and high thermal stability,in which the values ofΔT_(x )and T_(x1)are equal to 39Kand 929K,respectively.The electrical resistivity of the Fe_(67-x)Nb_5B_(28)Cu_(x )glassy alloys reaches 119～138μΩ·cm.The Fe_(67-x)Nb_5B_(28)Cu_(x )glassy alloys show a correspondence between electrical resistivity and GFA.
The Fe_(67-x)Nb_5B_(28)Cu_x(x=0.5,1.0,2.0)(atomic fraction,%)amorphous ribbons have been prepared successfully by melt-spinning.The influences of Cu content on thermal stability and electrical resistivity were investigated by X-ray diffractometer(XRD),differential scanning calorimetry(DSC)and four-point tester.The results indicate that the crystallization process is directly related with Cu content,where with the increase of Cu content,the glass forming ability and thermal stability are decreased in the Fe_(67-x)Nb_5B_(28)Cu_(x )alloys.The Fe_(66.5)Nb_5B_(28)Cu_(0.5)glassy alloy exhibits the excellent GFA and high thermal stability,in which the values ofΔT_(x )and T_(x1)are equal to 39Kand 929K,respectively.The electrical resistivity of the Fe_(67-x)Nb_5B_(28)Cu_(x )glassy alloys reaches 119～138μΩ·cm.The Fe_(67-x)Nb_5B_(28)Cu_(x )glassy alloys show a correspondence between electrical resistivity and GFA.
引文
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[3] LU Z P,LIU C T,THOMPSON J R,et al.Structural amorphous steels[J].Physical Review Letters,2004,92(24):245503.
[4]朱满,姚丽娟,陈思思,等.Mo对Fe-Nb-B非晶热稳定性和软磁性能的影响[J].稀有金属材料与工程,2016(3):715-719.
[5] DUWEZ P,LIN S C H.Amorphous ferromagnetic phase in ironcarbon-phosphorus alloys[J].Journal of Applied Physics,1967,38(10):4 096-4 097.
[6] YOSHIZAWA Y,OGUMA S,YAMAUCHI K.New Fe-based soft magnetic alloys composed of ultrafine grain structure[J].Journal of Applied Physics,1988,64(10):6 044-6 046.
[7] SUZUKI K,MAKINO A,INOUE A,et al.Soft magnetic properties of nanocrystalline bcc Fe-Zr-B and Fe-M-B-Cu(M=transition metal)alloys with high saturation magnetization(invited)[J].Journal of Applied Physics,1991,70(10):6 232-6 237.
[8] HERZER G,VAZQUEZ M,KNOBEL M,et al.Round table discussion:Present and future applications of nanocrystalline magnetic materials[J].Journal of Magnetism&Magnetic Materials,2005,294(2):252-266.
[9] JIAO Z B,LI H X,GAO J E,et al.Effects of alloying elements on glass formation,mechanical and soft-magnetic properties of Febased metallic glasses[J].Intermetallics,2011,19(10):1 502-1 508.
[10] LI W,YANG Y Z,XU J,et al.Effect of Co and Cu content on magnetic properties of high induction Fe-based amorphous alloys[J].Journal of Superconductivity&Novel Magnetism,2017,30(7):1 877-1 882.
[11] LIU Q,MO J,LIU H,et al.Effects of Cu substitution for Nb on magnetic properties of Fe-based bulk metallic glasses[J].Journal of Non-Crystalline Solids,2016,443:108-111.
[12]薛琳.Fe(Co)NbBCu纳米晶合金软磁性能及微观结构研究[D].江苏徐州:中国矿业大学,2014.
[13]豆林涛.Cu对Fe基非晶合金形成能力及软磁性能的影响[D].江苏徐州:中国矿业大学,2015.
[14] LU Z P,LI Y,NG S C.Reduced glass transition temperature and glass forming ability of bulk glass forming alloys[J].Journal of Non-Crystalline Solids,2000,270(1):103-114.
[15] LU Z P,LIU C T.A new glass-forming ability criterion for bulk metallic glasses[J].Acta Materialia,2002,50(13):3 501-3 512.
[16] PARSONS R,ZANG B,ONODERA K,et al.Soft magnetic properties of rapidly-annealed nanocrystalline Fe-Nb-B-(Cu)alloys[J].Journal of Alloys&Compounds,2017,723:408-417.
[17]李耐锐,陈学定,胡勇,等.Cu,Zr对Al-Ni-Zr-Cu-Y非晶合金的形成和热稳定性的影响[J].兰州理工大学学报,2004,30(4):19-21.
[18] HONO K,PING D H,OHNUMA M,et al.Cu clustering and Si partitioning in the early crystallization stage of an Fe73.5Si13.5B9Nb3Cu1amorphous alloy[J].Acta Materialia,1999,47(3):997-1 006.
[19]戴道生.非晶态物理[M].北京:电子工业出版社,1989.
[20] MOTT N.Conduction in glasses containing transition metal ions[J].Journal of Non-Crystalline Solids,1968,1(1):1-17.
[21]吕云卓.Co对Fe基块体非晶合金玻璃形成能力的影响机理[D].哈尔滨:哈尔滨工业大学,2013.
[22]王诚杰,陈庆军,夏怀效.合金系掺杂对FeCoCrMoCBY非晶合金热导率的影响[J].材料热处理学报,2017,38(3):16-20.