CN109265156A - 一种高磁导率软磁铁氧体材料及其应用 - Google Patents

一种高磁导率软磁铁氧体材料及其应用 Download PDF

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CN109265156A
CN109265156A CN201811185268.1A CN201811185268A CN109265156A CN 109265156 A CN109265156 A CN 109265156A CN 201811185268 A CN201811185268 A CN 201811185268A CN 109265156 A CN109265156 A CN 109265156A
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high magnetic
aluminum hydrotalcite
magnetic conductivity
ferrite material
soft
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瞿德林
王久如
王晓祥
李丛俊
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TIANCHANG ZHONGDE ELECTRONICS CO Ltd
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Abstract

本发明公开了一种高磁导率软磁铁氧体材料，其原料包括主成分和辅料，所述主成分按重量百分比包括组分：45.2‑48.7wt％的Fe2O3、25.0‑29.5wt％的ZnO、余量为MnO；以主成分的质量和为基准，所述辅料按添加量计包括组分：3‑7wt％的Al2O3、2‑6wt％的CaO、2‑5wt％的SiO2、0.2‑1.0wt％的Cr2O3、0.1‑0.15wt％的ZrO2、0.05‑0.08wt％的Pb3O4、1.0‑2.5wt％的V2O5。本发明还公开了一种高磁导率软磁铁氧体材料的应用。本发明中原料搭配使用，可显著提高铁氧体磁芯的磁导率和居里温度，还可降低磁芯损耗，提高磁芯的综合性能。

Description

一种高磁导率软磁铁氧体材料及其应用
技术领域
本发明涉及磁性材料技术领域，具体涉及一种高磁导率软磁铁氧体材料及其应用。
背景技术
随着数字通信技术和光纤通信技术的快速发展，传统的模拟通信设备不断地更新淘汰。在电子电路宽带变压器，综合业务数据网、局域网、广域网、背景照明等领域的脉冲变压器和光伏逆变器中共模滤波电感用的高磁导率Mn-Zn铁氧体磁芯，由于变压器等朝着小型化发展，因此对锰锌铁氧体的磁特性提出了更高要求。磁导率的提高有利于器件朝着小型化发展，因此，不断提高磁性材料中的初始磁导率，一直是从事该专业的工程技术人员和生产厂商的追求。
发明内容
基于背景技术存在的技术问题，本发明提出了一种高磁导率软磁铁氧体材料，添加了辅料、改性锌铝水滑石和主成分共同使用，显著提高了铁氧体磁芯的磁导率和居里温度，降低了磁芯损耗。
本发明提出了一种高磁导率软磁铁氧体材料，其原料包括主成分和辅料，所述主成分按重量百分比包括组分：45.2-48.7wt％的Fe2O3、25.0-29.5wt％的ZnO、余量为MnO；以主成分的质量和为基准，所述辅料按添加量计包括组分：3-7wt％的Al2O3、2-6wt％的CaO、2-5wt％的SiO2、0.2-1.0wt％的Cr2O3、0.1-0.15wt％的ZrO2、0.05-0.08wt％的Pb3O4、1.0-2.5wt％的V2O5。
优选地，所述高磁导率软磁铁氧体材料还包括改性锌铝水滑石，改性锌铝水滑石占总质量的1-3wt％。
优选地，所述改性锌铝水滑石的制备工艺如下：将锌铝水滑石干燥，冷却，加入无水乙醇，搅拌，然后加入钛酸酯偶联剂和十二烷基磺酸钠，加热搅拌反应，过滤，干燥，即得改性锌铝水滑石。
优选地，所述改性锌铝水滑石的制备工艺如下：将锌铝水滑石置于80-100℃下干燥1-2h，冷却，加入无水乙醇，搅拌5-10min，然后加入钛酸酯偶联剂和十二烷基磺酸钠，置于105-120℃的油浴下搅拌反应1-4h，过滤，在85-95℃下干燥5-10h，即得改性锌铝水滑石。
优选地，所述Fe2O3为45.8-48.0wt％。
优选地，所述ZnO为26.0-27.5wt％。
优选地，所述辅料按添加量计包括组分：4-6wt％的Al2O3、3-5wt％的CaO、3-4wt％的SiO2、0.4-0.8wt％的Cr2O3、0.11-0.14wt％的ZrO2、0.06-0.07wt％的Pb3O4、1.5-2.1wt％的V2O5。
本发明还提出了一种所述高磁导率软磁铁氧体材料的应用，用于制备铁氧体磁芯。
本发明所述高磁导率软磁铁氧体材料可采用常规方法制备，例如：按配方比例将各组成原料充分混合、振磨、造球、预烧、粗粉碎、二次粉碎、制浆、配方分析与调整、料浆调整、喷雾造粒后，完成了软磁铁氧体材料的粉体制备。
本发明的高磁导率软磁铁氧体材料中，主成分和辅料以科学合理的配方配比配合使用，使得铁氧体材料磁导率和居里温度均较高。本发明采用Al2O3、CaO、SiO2、Cr2O3、ZrO2、Pb3O4、V2O5为辅料，并与主成分共同经过烧结工艺，可显著提高铁氧体磁芯的磁导率和居里温度，还可降低磁芯损耗，提高磁芯的综合性能。本发明添加的改性锌铝水滑石是通过钛酸酯偶联剂和十二烷基磺酸钠共同改性得到的，扩大了水滑石的层间距且其表面被钝化，运用到本发明中，可提高主成分与辅料间的相容性和分散性，有利于使铁氧体材料的晶粒大小均匀，从而进一步降低磁芯损耗，提高了磁芯的性能。
具体实施方式
下面，通过具体实施例对本发明的技术方案进行详细说明。
实施例1
一种高磁导率软磁铁氧体材料，其原料包括主成分和辅料，所述主成分按重量百分比包括组分：48.7wt％的Fe2O3、25.0wt％的ZnO、余量为MnO；以主成分的质量和为基准，所述辅料按添加量计包括组分：7wt％的Al2O3、2wt％的CaO、5wt％的SiO2、0.2wt％的Cr2O3、0.15wt％的ZrO2、0.05wt％的Pb3O4、2.5wt％的V2O5；
其中，所述高磁导率软磁铁氧体材料还包括改性锌铝水滑石，改性锌铝水滑石占总质量的1wt％；
所述改性锌铝水滑石的制备工艺如下：将锌铝水滑石置于100℃下干燥1h，冷却，加入无水乙醇，搅拌10min，然后加入钛酸酯偶联剂和十二烷基磺酸钠，置于105℃的油浴下搅拌反应4h，过滤，在85℃下干燥10h，即得改性锌铝水滑石。
实施例2
一种高磁导率软磁铁氧体材料，其原料包括主成分和辅料，所述主成分按重量百分比包括组分：45.2wt％的Fe2O3、29.5wt％的ZnO、余量为MnO；以主成分的质量和为基准，所述辅料按添加量计包括组分：3wt％的Al2O3、6wt％的CaO、2wt％的SiO2、1.0wt％的Cr2O3、0.1wt％的ZrO2、0.08wt％的Pb3O4、1.0wt％的V2O5；
其中，所述高磁导率软磁铁氧体材料还包括改性锌铝水滑石，改性锌铝水滑石占总质量的3wt％；
所述改性锌铝水滑石的制备工艺如下：将锌铝水滑石置于80℃下干燥2h，冷却，加入无水乙醇，搅拌5min，然后加入钛酸酯偶联剂和十二烷基磺酸钠，置于120℃的油浴下搅拌反应1h，过滤，在95℃下干燥5h，即得改性锌铝水滑石。
实施例3
一种高磁导率软磁铁氧体材料，其原料包括主成分和辅料，所述主成分按重量百分比包括组分：48.0wt％的Fe2O3、26.0wt％的ZnO、余量为MnO；以主成分的质量和为基准，所述辅料按添加量计包括组分：6wt％的Al2O3、3wt％的CaO、4wt％的SiO2、0.4wt％的Cr2O3、0.14wt％的ZrO2、0.06wt％的Pb3O4、2.1wt％的V2O5；
其中，所述高磁导率软磁铁氧体材料还包括改性锌铝水滑石，改性锌铝水滑石占总质量的2.5wt％；
所述改性锌铝水滑石的制备工艺如下：将锌铝水滑石置于86℃下干燥1.8h，冷却，加入无水乙醇，搅拌6min，然后加入钛酸酯偶联剂和十二烷基磺酸钠，置于116℃的油浴下搅拌反应2h，过滤，在92℃下干燥6h，即得改性锌铝水滑石。
实施例4
一种高磁导率软磁铁氧体材料，其原料包括主成分和辅料，所述主成分按重量百分比包括组分：45.8wt％的Fe2O3、27.5wt％的ZnO、余量为MnO；以主成分的质量和为基准，所述辅料按添加量计包括组分：4wt％的Al2O3、5wt％的CaO、3wt％的SiO2、0.8wt％的Cr2O3、0.11wt％的ZrO2、0.07wt％的Pb3O4、1.5wt％的V2O5；
其中，所述高磁导率软磁铁氧体材料还包括改性锌铝水滑石，改性锌铝水滑石占总质量的1.5wt％；
所述改性锌铝水滑石的制备工艺如下：将锌铝水滑石置于95℃下干燥1.2h，冷却，加入无水乙醇，搅拌9min，然后加入钛酸酯偶联剂和十二烷基磺酸钠，置于108℃的油浴下搅拌反应3h，过滤，在88℃下干燥8h，即得改性锌铝水滑石。
实施例5
一种高磁导率软磁铁氧体材料，其原料包括主成分和辅料，所述主成分按重量百分比包括组分：46.5wt％的Fe2O3、26.5wt％的ZnO、余量为MnO；以主成分的质量和为基准，所述辅料按添加量计包括组分：5wt％的Al2O3、4wt％的CaO、3.5wt％的SiO2、0.6wt％的Cr2O3、0.13wt％的ZrO2、0.07wt％的Pb3O4、1.8wt％的V2O5；
其中，所述高磁导率软磁铁氧体材料还包括改性锌铝水滑石，改性锌铝水滑石占总质量的2wt％；
所述改性锌铝水滑石的制备工艺如下：将锌铝水滑石置于90℃下干燥1.5h，冷却，加入无水乙醇，搅拌8min，然后加入钛酸酯偶联剂和十二烷基磺酸钠，置于112℃的油浴下搅拌反应2.5h，过滤，在90℃下干燥7.5h，即得改性锌铝水滑石。
对比例1
与实施例5相比，不添加改性锌铝水滑石，其他条件与实施例5完全相同。
对比例2
与实施例5相比，不添加Cr2O3、ZrO2、Pb3O4和改性锌铝水滑石，其他条件与实施例5完全相同。
试验例1
分别将本发明实施例3-5和对比例1、2的软磁铁氧体材料压制成(目前行业内通用的材料性能测试圆环)的标准样环在功率气氛炉中烧结。对样环进行测试，测试结果见表1。
表1
由表1可以看出，与对比例相比，实施例具有较高的起始磁导率、饱和磁通密度、矫顽力和居里温度，且磁芯损耗较低，因此，本发明的高磁导率软磁铁氧体材料性能优异，满足实际应用中的需求。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。

Claims (8)

1.一种高磁导率软磁铁氧体材料，其原料包括主成分和辅料，其特征在于，所述主成分按重量百分比包括组分：45.2-48.7wt％的Fe2O3、25.0-29.5wt％的ZnO、余量为MnO；以主成分的质量和为基准，所述辅料按添加量计包括组分：3-7wt％的Al2O3、2-6wt％的CaO、2-5wt％的SiO2、0.2-1.0wt％的Cr2O3、0.1-0.15wt％的ZrO2、0.05-0.08wt％的Pb3O4、1.0-2.5wt％的V2O5。
2.根据权利要求1所述高磁导率软磁铁氧体材料，其特征在于，所述高磁导率软磁铁氧体材料还包括改性锌铝水滑石，改性锌铝水滑石占总质量的1-3wt％。
3.根据权利要求2所述高磁导率软磁铁氧体材料，其特征在于，所述改性锌铝水滑石的制备工艺如下：将锌铝水滑石干燥，冷却，加入无水乙醇，搅拌，然后加入钛酸酯偶联剂和十二烷基磺酸钠，加热搅拌反应，过滤，干燥，即得改性锌铝水滑石。
4.根据权利要求2或3所述高磁导率软磁铁氧体材料，其特征在于，所述改性锌铝水滑石的制备工艺如下：将锌铝水滑石置于80-100℃下干燥1-2h，冷却，加入无水乙醇，搅拌5-10min，然后加入钛酸酯偶联剂和十二烷基磺酸钠，置于105-120℃的油浴下搅拌反应1-4h，过滤，在85-95℃下干燥5-10h，即得改性锌铝水滑石。
5.根据权利要求1所述高磁导率软磁铁氧体材料，其特征在于，所述Fe2O3为45.8-48.0wt％。
6.根据权利要求1所述高磁导率软磁铁氧体材料，其特征在于，所述ZnO为26.0-27.5wt％。
7.根据权利要求1所述高磁导率软磁铁氧体材料，其特征在于，所述辅料按添加量计包括组分：4-6wt％的Al2O3、3-5wt％的CaO、3-4wt％的SiO2、0.4-0.8wt％的Cr2O3、0.11-0.14wt％的ZrO2、0.06-0.07wt％的Pb3O4、1.5-2.1wt％的V2O5。
8.一种根据权利要求1-7任一项所述高磁导率软磁铁氧体材料的应用，其特征在于，用于制备铁氧体磁芯。
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Publication number Priority date Publication date Assignee Title
CN110078489A (zh) * 2019-05-13 2019-08-02 海宁联丰磁业股份有限公司 一种低损耗软磁铁氧体材料及其制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110078489A (zh) * 2019-05-13 2019-08-02 海宁联丰磁业股份有限公司 一种低损耗软磁铁氧体材料及其制备方法
CN110078489B (zh) * 2019-05-13 2021-11-16 海宁联丰磁业股份有限公司 一种低损耗软磁铁氧体材料及其制备方法

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