高Fe含量FeCuNbSiB系非晶/纳米晶合金制备及其磁性研究*

doi:10.11901/1005.3093.2015.417

材料研究学报

2016, Vol. 30

Issue (1): 38-44 DOI: 10.11901/1005.3093.2015.417

研究论文

本期目录 | 过刊浏览

高Fe含量FeCuNbSiB系非晶/纳米晶合金制备及其磁性研究*

王葛¹, 鲍金锋¹, 王兴华^2,³, 陈玉鹤¹, 周富伟¹, 李强^1,³(

)

1. 燕山大学国家冷轧板带装备及工艺工程技术研究中心秦皇岛 066004
2. 天津大学材料科学与工程学院天津 300072
3. 河北工业大学材料科学与工程学院天津 300401

Preparation and Magnetic Properties of Amorphous- and Nanocrystalline-alloys of FeCuNbSiB with high Fe-content

WANG Ge¹, BAO Jinfeng¹, WANG Xinghua^2,³, CHEN Yuhe¹, ZHOU Fuwei¹, LI Qiang^1,^3,^**(

)

1. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, China
2. College of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
3. College of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China

引用本文:

王葛, 鲍金锋, 王兴华, 陈玉鹤, 周富伟, 李强. 高Fe含量FeCuNbSiB系非晶/纳米晶合金制备及其磁性研究*[J]. 材料研究学报, 2016, 30(1): 38-44.
Ge WANG, Jinfeng BAO, Xinghua WANG, Yuhe CHEN, Fuwei ZHOU, Qiang LI. Preparation and Magnetic Properties of Amorphous- and Nanocrystalline-alloys of FeCuNbSiB with high Fe-content[J]. Chinese Journal of Materials Research, 2016, 30(1): 38-44.

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摘要:

研究了过渡金属元素(Zr, Nb, Mo)和Cu元素对Fe₇₈Si₉B₁₃合金系非晶形成能力、热稳定性和磁性的影响; 在Fe₇₄Cu₁Nb₃Si₁₃B₉合金的基础上, 通过逐步提高Fe含量, 利用单辊甩带法制备Fe₍₇₆₊_x₎Cu₁Nb₃Si_(11-_x₎B₉(x=0, 2, 4)和Fe₍₇₉₊_x₎Cu₁Nb₂Si_(6-_x₎B₁₂(x=0, 2, 4)非晶/纳米晶合金薄带; 利用XRD、DSC、TEM和VSM研究了高Fe含量Fe-Cu-Nb-Si-B系非晶/纳米晶合金的微观结构和磁性, 并通过添加Nb元素优化了高Fe含量合金的磁性。研究结果表明: Zr和Nb元素的添加能明显提高Fe₇₈Si₉B₁₃合金的非晶形成能力和热稳定性; 高Fe含量的Fe-Cu-Nb-Si-B系纳米晶合金为典型的非晶/纳米晶双相结构, 合金的饱和磁化强度M_s>180 emu/g, 且合金的矫顽力H_c在2Oe-9Oe之间, 具有良好的软磁性能; Nb元素能显著细化Fe-Cu-Nb-Si-B系合金晶粒尺寸, 从而能显著降低合金的矫顽力, 改善合金的软磁性能; 当Fe含量在80%-83%(原子百分比, 下同)之间时, 合金具有良好的软磁性能, 但当Fe含量达到85%时, 会有Fe₂B、Fe₃B相析出, 从而显著恶化其软磁性能。

关键词 ：金属材料, 非晶/纳米晶合金, 非晶形成能力, 饱和磁化强度, 矫顽力

Abstract：

The effect of transition metal elements, such as Zr, Nb, Mo and Cu on the amorphous forming ability, thermal stability and magnetic propertywere investigated for the Fe₇₈Si₉B₁₃ alloy.By varying the Fe content of the Fe₇₄Cu₁Si₁₃B₉Nb₃amorphous alloy, two series alloys, i.e. Fe₍₇₆₊_x₎Cu₁Nb₃Si_(11-_x₎B₉(x=0, 2, 4) and Fe₍₇₉₊_x₎Cu₁Nb₂Si_(6-_x₎B₁₂(x=0, 2, 4) amorphous- and nanocrystalline-alloyswere prepared and finally their ribbons were producedby melt-spinning.The microstructures and magnetic properties of the prepared ribbonswere investigated by XRD, DSC, TEM and VSM etc. and the soft magnetic properties ofthe high Fe content alloyswere optimized by increasing the content of Nb.The results showed that theelements of Zr and Nb can effectively improve the amorphous forming ability and thermal stability of Fe₇₈Si₉B₁₃ alloys; A seriesFe-Cu-Nb-Si-B amorphous- and nanocrystalline-alloys with Fe content >80% (atomic fraction) were successfully prepared, themicrostructures of which are typically composed of dual amorphous- and nanocrystalline-phase. Their saturation magnetizations B_s are larger than 180emu/g and coercivitiesH_care between 2Oe and 9Oe, which means the alloys exhibit a good soft magnetic property. Thecoercivity would be reducedsince the grain size would be refined and thus the soft magnetic properties would be significantly improved as the Nbcontent increases. When the Fe content is between 80% (atomic fraction) and 83% (atomic fraction), the alloyswould exhibit an excellent soft magnetic property but when the Fe content comes to 85% (atomic fraction), phases of Fe₂B and Fe₃B would be precipitated that would furiouslydeterioratethe soft magnetic properties of the alloys.

Key words： metallic materials amorphous and nanocrystalline alloy amorphous forming ability saturation magnetization coercivity

收稿日期: 2015-07-22

基金资助:* 国家技术支撑计划项目子课题2013BAE08B01, 河北省应用基础研究计划重点基础研究项目13961001D和天津市应用基础与前沿技术研究项目14JCZDJC38600资助

作者简介: 李强

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图1 Fe78Si13B9中添加Zr、Nb、Mo和Cu合金薄带XRD图谱

图2 Fe77Cu1Si13B9、Fe74Cu1M3Si13B9(M=Zr、Nb)合金DSC曲线

表1 合金的特征温度(Tg, Tx, Tp1, Tp2, Tm, Tl)和GFA参数(ΔTx, Trg)

图3 Fe(77-x)Cu1MxSi9B12合金薄带快淬条件下M-H磁滞回线图

表2 Fe(77-x)Cu1MxSi13B9合金薄带的磁性参数

图4 Fe(74+x)Cu1Nb3Si(13-x)B9(x=0, 2, 4, 6)合金的XRD图

图5 Fe85Cu1Nb2Si2B10和Fe(79+x)Cu1Nb2Si(6-x)B12(x=0, 2, 4)合金的XRD图

图6 合金薄带的TEM像

表3 高Fe含量Fe-Cu-Nb-Si-B系合金的磁性参数

图7 Fe-Cu-Nb-Si-B系合金的Bs和Hc随Fe含量变化图

图8 Fe(83-x)Cu1Nb(2+x)Si2B12(x=0, 1, 2, 3)合金薄带的XRD图

图9 Fe(83-x)Cu1Nb(2+x)Si2B12(x=1, 2, 3)合金的Bs和Hc随Nb含量变化图

表4 Fe(83-x)Cu1Nb(2+x)Si2B12(x=1, 2, 3)合金薄带磁性参数

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