CN110436910A - 一种高Bs材料的制备方法 - Google Patents

一种高Bs材料的制备方法 Download PDF

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CN110436910A
CN110436910A CN201910765368.XA CN201910765368A CN110436910A CN 110436910 A CN110436910 A CN 110436910A CN 201910765368 A CN201910765368 A CN 201910765368A CN 110436910 A CN110436910 A CN 110436910A
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赖小彬
李海清
王百勤
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Zhongshan Erbite Magnetoelectric Technology Co Ltd
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Abstract

本发明公开了一种高Bs材料的制备方法，涉及磁芯材料技术领域；它的制备方法如下：将由47‑51mol％Fe2O3、20‑23mol％NiO、26.0‑26.5mol％ZnO、3.0‑3.6mol％CuO组成的原材料在振动球磨机里混合40‑50分钟，装入材料匣钵，在推板炉里用850℃预烧7‑8小时，材料预烧好后，用振动球磨机进行粗粉碎80‑100分钟，再投入到砂磨机，其砂磨50‑60分钟，加入PVA后进行喷雾造粒，成型为φ25*15*8的标准磁环进行烧结，烧结得到测试用标准磁环；本发明开发了Bs为480mT的材料，对应对市场产品的需求，同时制作工艺简单，节省时间；提高了产品的质量与效率。

Description

一种高Bs材料的制备方法
技术领域
本发明属于磁芯材料技术领域，具体涉及一种高Bs材料的制备方法。
背景技术
磁芯是指由各种氧化铁混合物组成的一种烧结磁性金属氧化物。例如，锰-锌铁氧体和镍-锌铁氧体是典型的磁芯体材料。锰-锌铁氧体具有高磁导率和高磁通密度的特点，且具有较低损耗的特性。镍-锌铁氧体具有极高的阻抗率、不到几百的低磁导率等特性。铁氧体磁芯用于各种电子设备的线圈和变压器中。目前现有的磁芯材料最高Bs为460mT，不能满足市场上超小型化产品的电器特性要求。
发明内容
为解决现有的磁芯材料最高Bs为460mT，不能满足市场上超小型化产品的电器特性要求的问题；本发明的目的在于提供一种高Bs材料的制备方法。
本发明的一种高Bs材料的制备方法，它的制备方法如下：
步骤一：
1.1、将由47-51mol％的Fe2O3、20-23mol％NiO、26.0-26.5mol％ZnO、3.0-3.6mol％CuO组成的原材料在振动球磨机里混合40-50分钟，装入材料匣钵，在推板炉里用850℃预烧7-8小时，
1.2、材料预烧好后，用振动球磨机进行粗粉碎80-100分钟，
1.3、再投入到砂磨机，其砂磨50-60分钟，加入PVA后进行喷雾造粒，成型为φ25*15*8的标准磁环进行烧结，恒温段温度为1150℃，时间为13-15小时，烧结得到测试用标准磁环；
步骤二：用SY-8258型B-H测试仪在磁场强度4000(A/m)测试25℃时的Bs，用高阻仪在100V时测试表面电阻，用HP4284，100KHz/1V测试感值计算μi。
作为优选，所述步骤一1的1.1中烧结时间为升温段为2.5-3.5小时，恒温段为1-2小时，降温段为2.5-3.5小时。
作为优选，所述步骤一的1.2中的粗粉碎粒径为1.6±0.2μm。
作为优选，所述步骤一的1.3的粗粉碎粒径为1.3±0.2μm。
作为优选，所述步骤一的1.3的烧结时间为升温段为5-7小时，恒温段为2-4小时，降温段为4-6小时。
与现有技术相比，本发明的有益效果为：
一、开发了Bs为480mT的材料，对应对市场产品的需求，同时制作工艺简单，节省时间；
二、提高了产品的质量与效率。
具体实施方式
实施例1：
本实施例采用以下技术方案：
步骤一：将由49.8mol％Fe2O3、21.2mol％NiO、26.0mol％ZnO、3.0mol％CuO组成的原材料在振动球磨机里混合45分钟，装入材料匣钵，在推板炉里用850℃预烧7.5小时(升温段3小时间，恒温段1.5小时间，降温段3小时间)，材料预烧好后，用振动球磨机进行粗粉碎90分钟(粗粉碎粒径为1.6±0.2μm)，再投入到砂磨机(含固量60％)砂磨60分钟(粗粉碎粒径为1.3±0.2μm)，加入PVA后进行喷雾造粒，成型为φ25*15*8的标准磁环进行烧结，恒温段温度为1150℃(升温段6小时间，恒温段3小时间，降温段5小时间)烧结得到测试用标准磁环；
步骤二：用SY-8258型B-H测试仪在磁場強度4000(A/m)测试25℃时的Bs，用高阻仪在100V时测试表面电阻，用HP4284，100KHz/1V测试感值计算μi。
实施例2：
本实施例与实施例1的不同之处在于，将49.8mol％Fe2O3、21.2mol％NiO、26.0mol％ZnO、3.0mol％CuO组成的原材料替换为51.0mol％Fe2O3、20.0mol％NiO、26.0mol％ZnO、3.0mol％CuO组成的原材料，其它制作工艺、烧结条件及测试条件与实施例1相同。
实施例3：
本实施例与实施例1的不同之处在于，将49.8mol％Fe2O3、21.2mol％NiO、26.0mol％ZnO、3.0mol％CuO组成的原材料替换为50.0mol％Fe2O3、20.8mol％NiO、26.0mol％ZnO、3.0mol％CuO组成的原材料，制作工艺、烧结条件及测试条件与实施例1相同。
实施例4：
本实施例与实施例1的不同之处在于，将49.8mol％Fe2O3、21.2mol％NiO、26.0mol％ZnO、3.0mol％CuO组成的原材料替换为49.0mol％Fe2O3、22.0mol％NiO、26.0mol％ZnO、3.0mol％CuO组成的原材料，制作工艺、烧结条件及测试条件与实施例1相同。
实施例5：
本实施例与实施例1的不同之处在于，将49.8mol％Fe2O3、21.2mol％NiO、26.0mol％ZnO、3.0mol％CuO组成的原材料替换为48.0mol％Fe2O3、23.0mol％NiO、26.0mol％ZnO、3.0mol％CuO组成的原材料，制作工艺、烧结条件及测试条件与实施例1相同。
综上所述，实施例1至实施例5的原材料、μi、Bs表面电阻的数值如下表所示：
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (5)

1.一种高Bs材料的制备方法，其特征在于：它的制备方法如下：
步骤一：
1.1、将由47-51mol％Fe2O3、20-23mol％NiO、26.0-26.5mol％ZnO、3.0-3.6mol％CuO组成的原材料在振动球磨机里混合40-50分钟，装入材料匣钵，在推板炉里用850℃预烧7-8小时，
1.2、材料预烧好后，用振动球磨机进行粗粉碎80-100分钟，
1.3、再投入到砂磨机，其砂磨50-60分钟，加入PVA后进行喷雾造粒，成型为φ25*15*8的标准磁环进行烧结，恒温段温度为1150℃，时间为13-15小时，烧结得到测试用标准磁环；
步骤二：用SY-8258型B-H测试仪在磁场强度4000(A/m)测试25℃时的Bs，用高阻仪在100V时测试表面电阻，用HP4284，100KHz/1V测试感值计算μi。
2.根据权利要求1所述的一种高Bs材料的制备方法，其特征在于：所述步骤一1的1.1中烧结时间为升温段为2.5-3.5小时，恒温段为1-2小时，降温段为2.5-3.5小时。
3.根据权利要求1所述的一种高Bs材料的制备方法，其特征在于：所述步骤一的1.2中的粗粉碎粒径为1.6±0.2μm。
4.根据权利要求1所述的一种高Bs材料的制备方法，其特征在于：所述步骤一的1.3的粗粉碎粒径为1.3±0.2μm。
5.根据权利要求1所述的一种高Bs材料的制备方法，其特征在于：所述步骤一的1.3的烧结时间为升温段为5-7小时，恒温段为2-4小时，降温段为4-6小时。
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Application publication date: 20191112