CN108059452A - 一种高磁导率软磁铁氧体材料及其制备方法 - Google Patents

一种高磁导率软磁铁氧体材料及其制备方法 Download PDF

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CN108059452A
CN108059452A CN201711286923.8A CN201711286923A CN108059452A CN 108059452 A CN108059452 A CN 108059452A CN 201711286923 A CN201711286923 A CN 201711286923A CN 108059452 A CN108059452 A CN 108059452A
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ferrite material
magnetic conductivity
nano
magnetic ferrite
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徐杰
周福林
张文军
曾性儒
王玉志
张宗仁
徐尔明
董文龙
陶天亮
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TIANCHANG CITY ZHAOTIAN MAGNETOELECTRICITY TECHNOLOGY Co Ltd
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Abstract

本发明公开一种高磁导率软磁铁氧体材料，包括如下组分：主料：Fe2O3：51.5~52.8mol%、MnO：25.8~27 mol%、ZnO：21.2~22 mol%；辅料：CaCO3：80~120ppm、Bi2O3：100~400ppm、CO2O3：100~350ppm、TiO2：50~150ppm、V2O5：30~120ppm、Nano‑SiO2：10~60ppm、Nano‑CaO：30~100ppm。本发明在辅料中加入超细粒度的Nano‑SiO2和Nano‑CaO，从辅料的角度出发增加各组分原料的反应活性，避免主料粒度过细发生团聚。本发明在烧结时充入SO3气体，是的原材料与SO3反应的更加充分，能够在提高磁导率的同时，降低损耗。

Description

一种高磁导率软磁铁氧体材料及其制备方法
技术领域
本发明属于软磁铁氧体材料领域，具体涉及一种高磁导率软磁铁氧体材料及其制备方法。
背景技术
软磁铁氧体是IT产业和电子工业的基础材料。工业化生产的软磁铁氧体材料目前主要分为：锰锌铁氧体、镍锌铁氧体和镁锌铁氧体三大类，其中产量最大的是锰锌铁氧体，锰锌铁氧体相较于其他铁氧体有鉄滞损耗地、起始磁导率大、距离温度高的优点，因此锰锌铁氧体被广泛应用于通讯、计算机、网络等电子信息产业领域，但随着这些产业的高速发展，市场对锰锌铁氧体材料性能要求越来越高。
发明内容
为了解决现有技术领域存在的问题，提高锰锌铁氧体的磁导率，降低锰锌铁氧体损耗，适应通讯行业，尤其是通讯变压器对软磁铁氧体的性能要求，本发明提出一种高磁导率软磁铁氧体材料，主要包括如下组分：
主料
Fe2O3：51.5~52.8mol%、MnO：25.8~27 mol%、ZnO：21.2~22 mol%。
辅料
CaCO3：80~120ppm、Bi2O3：100~400ppm、CO2O3：100~350ppm、TiO2：50~150ppm、V2O5：30~120ppm、Nano-SiO2：10~60ppm、Nano-CaO：30~100ppm。
本发明还提供上述一种高磁导率软磁铁氧体材料的制备方法，包括如下步骤：
（1）配料混合，将各组分按照上述配比配料，并放入单辊轴机中混合；
（2）预烧，在回转窑中进行预烧，预烧温度1000~1100℃，预烧时间：60~100min；
（3）粗粉碎，将预烧后的混合料放入球磨机粗粉粹20~40min；
（4）细粉碎，细粉碎利用砂磨机，粉磨30~60min；
（5）喷雾造粒：使用喷雾造粒机进行造粒；
（6）成型，将步骤（5）获得的粒料压制成型；
（7）烧结，升温区中致密去的温度为1000~1200℃，致密区充入SO3气体，保温3~5h，降温区1300~1000℃。
进一步地，所述步骤（7）中致密区还充入氮气和氧气的混合气体，其中氧气的体积百分比为0.3~0.5%。
优选地，所述Fe2O3为52.1 mol%。
优选地，所述MnO为26.2 mol%。
优选地，所述ZnO为22 mol%。
本发明的主要原理是：影响软磁铁氧体材料磁导率性能的主要因素的原材料的活性和纯度，细粒度的主料具有比表面积大的特点，能够增强其反应活性，在同样的工艺条件下能够获得优良磁铁特性的软磁铁氧体材料，然而过细的主料容易团聚，不利于混合均匀性以及粉末处理。基于以上原因，本发明在辅料中加入超细粒度的Nano-SiO2和Nano-CaO以增加各组分原料的反应活性。
此外，在配方中提高Zn的比例，有助于软磁铁氧体磁导率的提高，但是高Zn含量会降低软磁铁导体的距离温度，因此为了进一步提高软磁铁氧体材料的磁导率，掺杂是重要的手段，掺入SO3在有效提高磁导率的同时也能降低软磁铁氧体的损耗，在烧结时充入SO3气体，是的原材料与SO3反应的更加充分。
本发明的有益效果是：
1、本发明配方合理，能够有效提高软磁铁氧体的磁导率；
2、本发明在辅料中加入超细粒度的Nano-SiO2和Nano-CaO，从辅料的角度出发增加各组分原料的反应活性，避免主料粒度过细发生团聚；
3、在烧结时充入SO3气体，是的原材料与SO3反应的更加充分，能够在提高磁导率的同时，降低损耗。
具体实施方式
为了便于本领域技术人员理解，下面结合具体实施例对本发明作详细说明。
实施例1
一种高磁导率软磁铁氧体材料，主要包括如下组分：
主料
Fe2O3：51.5mol%、MnO：27mol%、ZnO：21.2 mol%。
辅料
CaCO3：80ppm、Bi2O3：400ppm、CO2O3：350ppm、TiO2：50ppm、V2O5：30ppm、Nano-SiO2：60ppm、Nano-CaO：100ppm。
一种高磁导率软磁铁氧体材料的制备方法，包括如下步骤：
（1）配料混合，将各组分按照上述配比配料，并放入单辊轴机中混合；
（2）预烧，在回转窑中进行预烧，预烧温度1000℃，预烧时间：60min；
（3）粗粉碎，将预烧后的混合料放入球磨机粗粉粹20min；
（4）细粉碎，细粉碎利用砂磨机，粉磨60min；
（5）喷雾造粒：使用喷雾造粒机进行造粒；
（6）成型，将步骤（5）获得的粒料压制成型；
（7）烧结，升温区中致密去的温度为1100℃，致密区充入SO3气体，保温3h，降温区1300~1000℃。
实施例2
一种高磁导率软磁铁氧体材料，主要包括如下组分：
主料
Fe2O3：52.8mol%、MnO：25.8mol%、ZnO：20 mol%。
辅料
CaCO3：120ppm、Bi2O3：100ppm、CO2O3：110ppm、TiO2：150ppm、V2O5：100ppm、Nano-SiO2：10ppm、Nano-CaO：30ppm。
一种高磁导率软磁铁氧体材料的制备方法，包括如下步骤：
（1）配料混合，将各组分按照上述配比配料，并放入单辊轴机中混合；
（2）预烧，在回转窑中进行预烧，预烧温度1100℃，预烧时间：80min；
（3）粗粉碎，将预烧后的混合料放入球磨机粗粉粹30min；
（4）细粉碎，细粉碎利用砂磨机，粉磨30min；
（5）喷雾造粒：使用喷雾造粒机进行造粒；
（6）成型，将步骤（5）获得的粒料压制成型；
（7）烧结，升温区中致密去的温度为1000℃，致密区充入SO3气体，以及氮气和氧气的混合气体，其中氧气的体积百分比0.3%，
保温4h，降温区1300~1000℃。
实施例3
一种高磁导率软磁铁氧体材料，主要包括如下组分：
主料
Fe2O3：为52.1 mol%、MnO：26.2 mol%、ZnO：22 mol%。
辅料
CaCO3：100ppm、Bi2O3：150ppm、CO2O3：260ppm、TiO2：80ppm、V2O5：120ppm、Nano-SiO2：50ppm、Nano-CaO：90ppm。
一种高磁导率软磁铁氧体材料的制备方法，包括如下步骤：
（1）配料混合，将各组分按照上述配比配料，并放入单辊轴机中混合；
（2）预烧，在回转窑中进行预烧，预烧温度1100℃，预烧时间：60~100min；
（3）粗粉碎，将预烧后的混合料放入球磨机粗粉粹40min；
（4）细粉碎，细粉碎利用砂磨机，粉磨30min；
（5）喷雾造粒：使用喷雾造粒机进行造粒；
（6）成型，将步骤（5）获得的粒料压制成型；
（7）烧结，升温区中致密去的温度为1200℃，致密区充入SO3气体以及氮气和氧气的混合气体，其中氧气的体积百分比为0.5%，
保温5h，降温区1300~1000℃。
上述实施例制得的软磁铁氧体材料的具体性能如下表所示：
由上表可以看出从初始磁导率、功率损耗、饱和磁通密度三个软磁材料的核心性能指标来衡量，按照本发明所述的配方和方法均能得到性能优异的软磁铁氧体材料，其中实施例3的各项性能指标最佳。

Claims (6)

1.一种高磁导率软磁铁氧体材料，其特征在于，包括如下组分：
主料：Fe2O3：51.5~52.8mol%、MnO：25.8~27 mol%、ZnO：21.2~22 mol%；辅料：CaCO3：80~120ppm、Bi2O3：100~400ppm、CO2O3：100~350ppm、TiO2：50~150ppm、V2O5：30~120ppm、Nano-SiO2：10~60ppm、Nano-CaO：30~100ppm。
2.如权利要求1所述的一种高磁导率软磁铁氧体材料的制备方法，其特征在于， 包括如下步骤：
（1）配料混合，将各组分按照上述配比配料，并放入单辊轴机中混合；
（2）预烧，在回转窑中进行预烧，预烧温度1000~1100℃，预烧时间：60~100min；
（3）粗粉碎，将预烧后的混合料放入球磨机粗粉粹20~40min；
（4）细粉碎，细粉碎利用砂磨机，粉磨30~60min；
（5）喷雾造粒：使用喷雾造粒机进行造粒；
（6）成型，将步骤（5）获得的粒料压制成型；
（7）烧结，升温区中致密去的温度为1000~1200℃，致密区充入SO3气体，保温3~5h，降温区1300~1000℃。
3.如权利要求2中所述的一种高磁导率软磁铁氧体材料的制备方法，其特征在于，所述步骤（7）中致密区还充入氮气和氧气的混合气体，其中氧气的体积百分比为0.3~0.5%。
4.Fe2O3为52.1 mol%。
5.如权利要求1所述的一种高磁导率软磁铁氧体材料，其特征在于，所述MnO为26.2mol%。
6.如权利要求1所述的一种高磁导率软磁铁氧体材料，其特征在于，所述ZnO为22mol%。
CN201711286923.8A 2017-12-07 2017-12-07 一种高磁导率软磁铁氧体材料及其制备方法 Pending CN108059452A (zh)

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