井冈山大学学报自然科学版

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王志辉,黄强,蒋达国.退火温度对Fe_73.5Co_0.3Cu₁Nb₃Si_14.2B₈合金带材磁性能的影响[J].井冈山大学自然版,2017,(6):71-76

退火温度对Fe_73.5Co_0.3Cu₁Nb₃Si_14.2B₈合金带材磁性能的影响

INFLUENCE OF ANNEALING TEMPERATURE ON MAGNETIC PROPERTIES OF Fe_73.5Co_0.3Cu₁Nb₃Si_14.2B₈ ALLOY STRIPS

投稿时间：2016-11-22 修订日期：2017-05-02

DOI：10.3969/j.issn.1674-8085.2017.06.015

中文关键词: Fe_73.5Co_0.3Cu₁Nb₃Si_14.2B₈合金带材退火温度晶化行为磁性能

英文关键词: Fe_73.5Co_0.3Cu₁Nb₃Si_14.2B₈ alloy strips annealing temperature crystallization behavior magnetic properties

基金项目:国家自然科学基金项目（51461020）；江西省自然科学基金项目（20151BAB202025）；江西省教育厅科技项目（GJJ150786）；江西省原子与分子物理重点学科项目（2011-2015）

作者	单位
王志辉	井冈山大学网络信息中心, 江西, 吉安 343009
黄强	井冈山大学机电学院, 江西, 吉安 343009
蒋达国	井冈山大学数理学院, 江西, 吉安 343009

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中文摘要:

用单辊法制备的宽为20 mm，厚为25 μm的Fe_73.5Co_0.3Cu₁Nb₃Si_14.2B₈合金带材，绕制成外径为40 mm，内径为25 mm的环型磁芯，再将磁芯进行退火处理。分析了合金带材的晶化行为，研究了退火温度对合金磁芯磁性能的影响。结果表明，淬火态Fe_73.5Co_0.3Cu₁Nb₃Si_14.2B₈合金带材为非晶态，一级起始晶化温度T_x1为512.8℃，二级起始晶化温度T_x2为671.9℃，当退火温度升高到550℃，在非晶基体中析出Fe（Si）软磁相，形成了非晶和纳米晶双相共存结构。当退火温度低于550℃时，随着退火温度的升高，合金磁芯的初始磁导率μ_i和饱和磁感应强度Bs增大，矫顽力Hc减小；当测试频率f和最大磁感应强度Bm不变时，合金磁芯的有效幅值磁导率μ_a增大，比总损耗Ps和交流矫顽力Hc减小；当测试频率f不变时，合金磁芯的电感Ls和品质因数Q增大。

英文摘要:

Cores were coiled with alloy strips Fe_73.5Co_0.3Cu₁Nb₃Si_14.2B₈ with a width of 20 mm and a thickness of 25μm. The cores were annealed. The crystallization behaviors of alloy ribbon are analyzed. The influence of annealing temperature on the magnetic property of alloy cores is investigated. Some results may be gained. The Fe_73.5Co_0.3Cu₁Nb₃Si_14.2B₈ quenching alloy strips is amorphous state. The first level initial crystallization temperature (T_x1) is 512.8℃ and the second level initial crystallization temperature (T_x2) is 671.9℃. When the annealing temperature is at 550℃, the Fe (Si) soft magnetic phase will be precipitated from the amorphous matrix, so, the coexisting structure including amorphous and nanocrystalline phases is formed. When the annealing temperature is lower than 550℃, the initial permeability (μ_i) and saturation induction density (B_s) of alloy magnetic core increase with increasing annealing temperature, and its coercivity(Hc) decreases. The effective amplitude permeability (μ_a) of alloy magnetic cores increases, and its special magnetic loss (P_s) and Ac coercive force (H_c) decrease when the test frequency (f) and maximum magnetic induction are unchanged. The inductance (L_s) and quality factor (Q) increase when the test frequency (f) is the same.

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