FeCoNiSiB系非晶合金的制备及其软磁性能的研究
发布时间：2018-08-03 09:38
【摘要】：本文采用真空非自耗式电弧炉在高纯氩保护下熔炼制备合金铸锭,使用单铜辊甩带法制备了FeCoNiSiB系非晶合金带材,并对带材进行了热处理,通过x射线衍射仪(XRD)、差式扫描量热议(DSC)、振动样品磁强计(VSM)以及软磁直流测试仪对带材的微观结构和磁性能进行表征和测试。通过微合金化技术,研究了微量Si、Ni、B对FeCoNiSiB合金的非晶形成能力和软磁性能的变化规律。主要得到了以下结果：1)在Fe40Ni38Mo4B(18-x)Six合金带材中,当x=0,2,4,6,8,10时均能形成非晶,且随着Si元素的添加,合金带材的矫顽力Hc先减小后增大,并在x=4时最小为5.8A/m。2)Fe40Ni38Mo4814Si4合金带材在405℃×10min热处理后获得较高的饱和磁化强度Ms为112.6emu/g,在345℃×10min热处理后获得较低的Hc为7.0A/m。3)淬火态(Feo.39Co0.15Ni0.46)94-yBySi6合金带材,在y=12,14,16,18时均能形成非晶；B元素的添加提高的(Fe0.39Co0.15Nio.46)94-yBySi6合金带材的一级起始晶化温度,但降低了两级起始晶化温度之间的差值△Tx;在y=14%时非晶合金的饱和磁化强度Ms达到最大值,为94.6emu/g；在y=12时非晶合金的矫顽力Hc达到最小值,为10.1A/m。4)(Fe0.39Co0.15Ni0.46)80B14Si6非晶合金带材在465℃×10min退火后,样品的比饱和磁化强度Ms达到最大值为99.2emu/g；而矫顽力Hc在425℃×10min退火后达到最小值,为5.9A/m。5)淬火态(Fe0.39Co0.5Ni0.11)80B20-zSiZ合金带材,在z=2,4,6,8时均能形成非晶；随着Si含量的增加,合金带材的一级起始晶化温度Tx1和二级起始晶化温度Tx2都是先升高后降低；当z=8%时,淬火态合金带材的比饱和磁化强度Ms达到最大值,为147.7emu/g当z=2%时,淬火态合金带材的矫顽力Hc达到最小值,为12.2A/m。6)将(Feo.39Co0.5Ni0.11)80B12Si8合金带材保温退火后发现,在430℃之前,合金带材的比饱和磁化强度Ms和矫顽力Hc变化不大,比饱和磁化强度Ms为132.8emu/g.在430℃×10min退火后,矫顽力Hc达到最小值,为12.4A/m。
[Abstract]:In this paper, the alloy ingot was prepared by vacuum non-consumable arc furnace melting under the protection of high purity argon, and the FeCoNiSiB amorphous alloy strip was prepared by single copper roll casting method, and the strip was heat-treated. X-ray diffractometer (XRD), differential scanning calorimetry (DSC), vibrating sample magnetometer (VSM) and soft magnetic DC tester were used to characterize and test the microstructure and magnetic properties of the strip. The changes of amorphous forming ability and soft magnetic properties of FeCoNiSiB alloy were studied by microalloying technique. The main results are as follows: 1) in the Fe40Ni38Mo4B (18-x) Six alloy strip, the amorphous can be formed at 10:00 when the alloy strip is x0 ~ (2 +) ~ (2 +) 4 ~ (6) C, and the coercivity HC of the alloy strip decreases at first and then increases with the addition of Si element, and the results show that the coercivity of the alloy strip decreases firstly and then increases with the addition of Si element. At x = 4, the minimum 5.8A/m.2) Fe40Ni38Mo4814Si4 alloy strip obtained a higher saturation magnetization (Ms) of 112.6 emu / g after heat treatment at 405 鈩，
本文编号：2161339
[Abstract]:In this paper, the alloy ingot was prepared by vacuum non-consumable arc furnace melting under the protection of high purity argon, and the FeCoNiSiB amorphous alloy strip was prepared by single copper roll casting method, and the strip was heat-treated. X-ray diffractometer (XRD), differential scanning calorimetry (DSC), vibrating sample magnetometer (VSM) and soft magnetic DC tester were used to characterize and test the microstructure and magnetic properties of the strip. The changes of amorphous forming ability and soft magnetic properties of FeCoNiSiB alloy were studied by microalloying technique. The main results are as follows: 1) in the Fe40Ni38Mo4B (18-x) Six alloy strip, the amorphous can be formed at 10:00 when the alloy strip is x0 ~ (2 +) ~ (2 +) 4 ~ (6) C, and the coercivity HC of the alloy strip decreases at first and then increases with the addition of Si element, and the results show that the coercivity of the alloy strip decreases firstly and then increases with the addition of Si element. At x = 4, the minimum 5.8A/m.2) Fe40Ni38Mo4814Si4 alloy strip obtained a higher saturation magnetization (Ms) of 112.6 emu / g after heat treatment at 405 鈩，
本文编号：2161339
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