CN106920624A - 一种磁敏传感器用一体式磁芯 - Google Patents

一种磁敏传感器用一体式磁芯 Download PDF

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CN106920624A
CN106920624A CN201710122345.8A CN201710122345A CN106920624A CN 106920624 A CN106920624 A CN 106920624A CN 201710122345 A CN201710122345 A CN 201710122345A CN 106920624 A CN106920624 A CN 106920624A
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soft magnetism
ball milling
magneto
hard magnetic
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龙克文
颜天宝
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Foshan Chuandong Magnetoelectricity Co Ltd
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Abstract

本发明公开了一种增材制造磁芯用材料，包括软磁部和设置在软磁部两端的硬磁部，所述软磁部的和硬磁部中设置有放置磁敏元件的空腔，所述软磁部的和硬磁部一体化成型设置；所述软磁部的宽度小于硬磁部，使磁芯结构的侧面形成便于对硬磁部进行充磁的凹槽，所述软磁部的主成分及其质量百分比为所述软磁部的主成分及其质量百分比为Fe2O3：30‑40％，NiO：20‑30％，ZnO：0.2‑3.5％，CuO：5‑10％，Co2O3：0.15‑0.35％，Si0：1.0‑2.0％，Mn0：2.5‑4.0％，Cr06：2.0‑3.0％，Cu02：1.5‑2.5％，C≤0.08％，P≤0.05％，S≤0.04％，Fe为余量。本发明提供的磁敏传感器用一体式磁芯，使得磁敏传感既能够感应磁场的变化，同时还能够对温度进行感应，适应了多种需求，同时还能保证磁敏感性，进行灵敏的磁敏检测。

Description

一种磁敏传感器用一体式磁芯
技术领域
本发明属于传感器领域，具体地说是涉及一种磁敏传感器用一体式磁芯。
背景技术
现有的磁敏传感器的核心是磁芯，但是现有的磁芯不能够检测温度，仅仅能够检测磁场，功能单一，不能使用特殊场合的检测需要。
发明内容
为解决上述技术问题，本发明提供一种磁敏传感器用一体式磁芯。
为达到上述目的，本发明所采取的技术方案为：
一种磁敏传感器用一体式磁芯，包括软磁部和设置在软磁部两端的硬磁部，所述软磁部的和硬磁部中设置有放置磁敏元件的空腔，所述软磁部的和硬磁部一体化成型设置；所述软磁部的宽度小于硬磁部，使磁芯结构的侧面形成便于对硬磁部进行充磁的凹槽，其特征在于，所述软磁部的主成分及其质量百分比为Fe2O3：30-40％，NiO：20-30％，ZnO：0.2-3.5％，CuO：5-10％，Co2O3：0.15-0.35％，Si0：1.0-2.0％，Mn0：2.5-4.0％，Cr06：2.0-3.0％，Cu02：1.5-2.5％，C≤0.08％，P≤0.05％，S≤0.04％，Fe为余量。
进一步地，所述磁芯结构的侧面对称设置有两个便于充磁设备夹持磁芯结构的夹持平面，所述凹槽设置在夹持平面上。
进一步地，所述软磁部的的两端设置有凸起部，所述硬磁部与软磁部连接的端面设置有与凸起部嵌合的凹入部。
进一步地，所述软磁部的制备方法包括以下步骤：
(1)一次球磨：将主成分各组分按配比进行混合，将所得的混合物通过湿法一次球磨，一次球磨后的颗粒料的平均粒度在0.7-1.2μm；
(2)预烧：将一次球磨后的颗粒料在空气中进行预烧，预烧温度控制在750-920℃，保温3.6-4.9小时；
(3)二次球磨：将预烧后的颗粒料与添加物一起进行湿法二次球磨，二次球磨后的颗粒料的平均粒度在0.6-0.8μm；
(4)成型及烧结：将二次球磨后的颗粒料烘干，加入预烧料重量8-11％的聚乙烯醇溶液，混合均匀后造粒，压制成型，在空气中进行烧结，烧结温度控制在1350-1560℃，保温2-7小时，得到材料。
进一步地，所述添加物为Mn3O4，SiO2，Bi2O3，TiO2中的至少两种。
进一步地，所述Mn3O4占主成分的质量百分比为0.08-0.12w％；所述SiO2占主成分的质量百分比为3.2-4.8w％；所述Bi2O3占主成分的质量百分比为1.2-2.8w％；所述TiO2占主成分的质量百分比为1.2-3.5w％。
本发明的有益效果：
本发明在以Fe2O3、NiO为主要原料的基础上，通过掺杂ZnO、CuO、Mn0、Cr06、Cu02等成分，可以提高软磁材料的居里温度敏感性能和热稳定性能，然后通过利用软磁部的材质具有居里温度敏感的特性，当温度升高的时候，一体式磁性也会进行感应，使得磁敏传感既能够感应磁场的变化，同时还能够对温度进行感应，适应了多种需求，同时还能保证磁敏感性，进行灵敏的磁敏检测。
具体实施方式
下面结合具体实施例对本发明所述技术方案作进一步的说明。
实施例1：
一种磁敏传感器用一体式磁芯，包括软磁部和设置在软磁部两端的硬磁部，所述软磁部的和硬磁部中设置有放置磁敏元件的空腔，所述软磁部的和硬磁部一体化成型设置；所述软磁部的宽度小于硬磁部，使磁芯结构的侧面形成便于对硬磁部进行充磁的凹槽，其特征在于，所述软磁部的主成分及其质量百分比为Fe2O3：30％，NiO：20％，ZnO：0.2％，CuO：5％，Co2O3：0.15％，Si0：1.0％，Mn0：2.5％，Cr06：2.0％，Cu02：1.5％，C≤0.08％，P≤0.05％，S≤0.04％，Fe为余量。
进一步地，所述磁芯结构的侧面对称设置有两个便于充磁设备夹持磁芯结构的夹持平面，所述凹槽设置在夹持平面上。
进一步地，所述软磁部的两端设置有凸起部，所述硬磁部与软磁部连接的端面设置有与凸起部嵌合的凹入部。
进一步地，所述软磁部的制备方法包括以下步骤：
(1)一次球磨：将主成分各组分按配比进行混合，将所得的混合物通过湿法一次球磨，一次球磨后的颗粒料的平均粒度在0.7μm；
(2)预烧：将一次球磨后的颗粒料在空气中进行预烧，预烧温度控制在750℃，保温4.9小时；
(3)二次球磨：将预烧后的颗粒料与添加物一起进行湿法二次球磨，二次球磨后的颗粒料的平均粒度在0.6μm；
(4)成型及烧结：将二次球磨后的颗粒料烘干，加入预烧料重量8％的聚乙烯醇溶液，混合均匀后造粒，压制成型，在空气中进行烧结，烧结温度控制在1350℃，保温7小时，得到材料。
进一步地，所述添加物为Mn3O4，SiO2。
进一步地，所述Mn3O4占主成分的质量百分比为0.08w％；所述SiO2占主成分的质量百分比为3.2w％。
实施例2：
一种磁敏传感器用一体式磁芯，包括软磁部和设置在软磁部两端的硬磁部，所述软磁部的和硬磁部中设置有放置磁敏元件的空腔，所述软磁部的和硬磁部一体化成型设置；所述软磁部的宽度小于硬磁部，使磁芯结构的侧面形成便于对硬磁部进行充磁的凹槽，其特征在于，所述软磁部的主成分及其质量百分比为Fe2O3：35％，NiO：25％，ZnO：2.0％，CuO：8％，Co2O3：0.25％，Si0：1.5％，Mn0：3.5％，Cr06：2.5％，Cu02：2％，C≤0.08％，P≤0.05％，S≤0.04％，Fe为余量。
进一步地，所述磁芯结构的侧面对称设置有两个便于充磁设备夹持磁芯结构的夹持平面，所述凹槽设置在夹持平面上。
进一步地，所述软磁部的两端设置有凸起部，所述硬磁部与软磁部连接的端面设置有与凸起部嵌合的凹入部。
进一步地，所述软磁部的制备方法包括以下步骤：
(1)一次球磨：将主成分各组分按配比进行混合，将所得的混合物通过湿法一次球磨，一次球磨后的颗粒料的平均粒度在0.9μm；
(2)预烧：将一次球磨后的颗粒料在空气中进行预烧，预烧温度控制在810℃，保温4.2小时；
(3)二次球磨：将预烧后的颗粒料与添加物一起进行湿法二次球磨，二次球磨后的颗粒料的平均粒度在0.7μm；
(4)成型及烧结：将二次球磨后的颗粒料烘干，加入预烧料重量10％的聚乙烯醇溶液，混合均匀后造粒，压制成型，在空气中进行烧结，烧结温度控制在1420℃，保温5小时，得到材料。
进一步地，所述添加物为Bi2O3，TiO2。
进一步地，所述Bi2O3占主成分的质量百分比为2.0w％；所述TiO2占主成分的质量百分比为2.3w％。
实施例3：
一种磁敏传感器用一体式磁芯，包括软磁部和设置在软磁部两端的硬磁部，所述软磁部的和硬磁部中设置有放置磁敏元件的空腔，所述软磁部的和硬磁部一体化成型设置；所述软磁部的宽度小于硬磁部，使磁芯结构的侧面形成便于对硬磁部进行充磁的凹槽，其特征在于，所述软磁部的主成分及其质量百分比为Fe2O3：40％，NiO：30％，ZnO：3.5％，CuO：10％，Co2O3：0.35％，Si0：2.0％，Mn0：4.0％，Cr06：3.0％，Cu02：2.5％，C≤0.08％，P≤0.05％，S≤0.04％，Fe为余量。
进一步地，所述磁芯结构的侧面对称设置有两个便于充磁设备夹持磁芯结构的夹持平面，所述凹槽设置在夹持平面上。
进一步地，所述软磁部的两端设置有凸起部，所述硬磁部与软磁部连接的端面设置有与凸起部嵌合的凹入部。
进一步地，所述软磁部的制备方法包括以下步骤：
(1)一次球磨：将主成分各组分按配比进行混合，将所得的混合物通过湿法一次球磨，一次球磨后的颗粒料的平均粒度在1.2μm；
(2)预烧：将一次球磨后的颗粒料在空气中进行预烧，预烧温度控制在920℃，保温3.6小时；
(3)二次球磨：将预烧后的颗粒料与添加物一起进行湿法二次球磨，二次球磨后的颗粒料的平均粒度在0.8μm；
(4)成型及烧结：将二次球磨后的颗粒料烘干，加入预烧料重量11％的聚乙烯醇溶液，混合均匀后造粒，压制成型，在空气中进行烧结，烧结温度控制在1560℃，保温2小时，得到材料。
进一步地，所述添加物为SiO2，TiO2中的至少两种。
进一步地，所述SiO2占主成分的质量百分比为4.8w％；所述TiO2占主成分的质量百分比为3.5w％。
对实施例1-3所准备的材料的分散性以及最终制品的质量进行了检测，发现实施例2所准备的材料的磁力性能最好，同时本发明具有良好的居里温度敏感性具体参数如下表：
实施例 矫顽力kA/m 最大磁能面积kJ/m
实施例1 1354 459
实施例2 1523 536
实施例3 1514 521

Claims (6)

1.一种磁敏传感器用一体式磁芯，包括软磁部和设置在软磁部两端的硬磁部，所述软磁部的和硬磁部中设置有放置磁敏元件的空腔，所述软磁部的和硬磁部一体化成型设置；所述软磁部的宽度小于硬磁部，使磁芯结构的侧面形成便于对硬磁部进行充磁的凹槽，其特征在于，所述软磁部的主成分及其质量百分比为Fe2O3：30-40％，NiO：20-30％，ZnO：0.2-3.5％，CuO：5-10％，Co2O3：0.15-0.35％，Si0：1.0-2.0％，Mn0：2.5-4.0％，Cr06：2.0-3.0％，Cu02：1.5-2.5％，C≤0.08％，P≤0.05％，S≤0.04％，Fe为余量。
2.根据权利要求1所述的磁敏传感器用一体式磁芯，其特征在于，所述磁芯结构的侧面对称设置有两个便于充磁设备夹持磁芯结构的夹持平面，所述凹槽设置在夹持平面上。
3.根据权利要求1所述的磁敏传感器用一体式磁芯，其特征在于，所述软磁部的两端设置有凸起部，所述硬磁部与软磁部连接的端面设置有与凸起部嵌合的凹入部。
4.根据权利要求1所述的磁敏传感器用一体式磁芯，其特征在于：所述软磁部的制备方法包括以下步骤：
(1)一次球磨：将主成分各组分按配比进行混合，将所得的混合物通过湿法一次球磨，一次球磨后的颗粒料的平均粒度在0.7-1.2μm；
(2)预烧：将一次球磨后的颗粒料在空气中进行预烧，预烧温度控制在750-920℃，保温3.6-4.9小时；
(3)二次球磨：将预烧后的颗粒料与添加物一起进行湿法二次球磨，二次球磨后的颗粒料的平均粒度在0.6-0.8μm；
(4)成型及烧结：将二次球磨后的颗粒料烘干，加入预烧料重量8-11％的聚乙烯醇溶液，混合均匀后造粒，压制成型，在空气中进行烧结，烧结温度控制在1350-1560℃，保温2-7小时，得到材料。
5.根据权利要求4所述的磁敏传感器用一体式磁芯，其特征在于，所述添加物为Mn3O4，SiO2，Bi2O3，TiO2中的至少两种。
6.根据权利要求5所述的磁敏传感器用一体式磁芯，其特征在于，所述Mn3O4占主成分的质量百分比为0.08-0.12w％；所述SiO2占主成分的质量百分比为3.2-4.8w％；所述Bi2O3占主成分的质量百分比为1.2-2.8w％；所述TiO2占主成分的质量百分比为1.2-3.5w％。
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