CN106782991A - 一种增材制造磁芯以及使用该磁芯的磁性器件 - Google Patents
一种增材制造磁芯以及使用该磁芯的磁性器件 Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 239000000696 magnetic material Substances 0.000 claims abstract description 35
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 26
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000005253 cladding Methods 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 239000004917 carbon fiber Substances 0.000 claims description 11
- 229910021389 graphene Inorganic materials 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 10
- AMWRITDGCCNYAT-UHFFFAOYSA-L manganese oxide Inorganic materials [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 238000001238 wet grinding Methods 0.000 claims description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- 238000000149 argon plasma sintering Methods 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- ZDVYABSQRRRIOJ-UHFFFAOYSA-N boron;iron Chemical compound [Fe]#B ZDVYABSQRRRIOJ-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000151 deposition Methods 0.000 abstract description 2
- 239000003292 glue Substances 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 1
- 239000012467 final product Substances 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000000110 selective laser sintering Methods 0.000 description 2
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 description 1
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 description 1
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
本发明属于磁芯技术领域，具体公开了一种增材制造磁芯，包括包覆物和内嵌物两种磁性材料，所述的外包覆物磁性材料为MnZn铁氧体软磁材料，所述内嵌物磁性材料为钕铁硼硬磁材料；所述MnZn铁氧体软磁材料通过增材制造技术完全包覆在钕铁硼硬磁材料外侧。本发明通过将钕铁硼硬磁材料和MnZn铁氧体软磁材料结合起来采用增材制造工艺组合加工，制造一种高性能磁芯，避免了传统的异质材料磁性中使用胶水的问题，同时，磁性得到控制，可以实现铁硼硬磁材料磁场的隔离，再者，解决了一般钕铁硼硬磁材料外电镀工艺不环保、难以通过72h盐雾试验、高温剥落等问题。
Description
技术领域
本发明属于磁芯技术领域，具体地说是涉及一种增材制造磁芯以及使用该磁芯的磁性器件。
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。铁氧体磁芯用于各种电子设备的线圈和磁性器件中，其是一种高频导磁材料，主要做高频磁性器件（像开关电源，行输出磁性器件等），高频磁环（抗干扰用）等等。目前，随着家用电器、高性能电脑和LCD显示器等的开关电源磁性器件向小型化、轻薄化和多功能化方向的发展，磁芯在这些设备中得到了越来越广泛的应用。制造高性能磁性势在必行。
发明内容
本发明目的在于提供一种高性能的增材制造磁芯以及使用该磁芯的磁性器件。
为达到上述目的，本发明所采取的技术方案为：
一种增材制造磁芯，包括包覆物和内嵌物两种磁性材料，所述的外包覆物磁性材料为MnZn铁氧体软磁材料，所述内嵌物磁性材料为钕铁硼硬磁材料；所述MnZn铁氧体软磁材料通过增材制造工艺完全包覆在钕铁硼硬磁材料外侧。
进一步的，所述的增材制造工艺为选择性激光烧结技术（Selected lasersintering,SLS）。
进一步的，所述的MnZn铁氧体软磁材料为具有随居里点导磁、失磁变化的软磁材料。
进一步的，所述的MnZn铁氧体软磁材料包括以下重量份的物质组分：46-54份Fe2O3、19-23份Mn3O4、28-32份ZnO、3-4份碳纤维、2-3份石墨烯、适量的去离子水。
进一步的，所述的MnZn铁氧体软磁材料的制备方法如下：
（1）配料：按重量份折合成物质质量分别按量称取物质质量备用；
（2）将步骤（1）已经称好质量的Fe2O3、Mn3O4、ZnO、碳纤维混合用行星式球磨机以2倍的去离子水湿磨2h，然后在100℃烘30-40min干燥过筛，随后用马弗炉在10μPa的氧压力1100℃下煅烧2.5h得预烧粉备用；
（3）将预烧粉中加入石墨烯,在星式球磨机二次球磨6h，在100℃烘20 -30min至干燥，然后放入马弗炉中按照一定的升温速度从100℃生至1300℃保温5h，进行平衡气氛烧结，即得。
进一步的，所述的MnZn铁氧体软磁材料在居里温度点附近可隔离钕铁硼硬磁材料的磁场。
一种包含上述增材制造磁芯的磁性器件。
本发明的有益效果：
本发明MnZn铁氧体软磁材料中添加有碳纤维和石墨烯，可以在保证材料密度和机械强度的同时提高软磁材料的居里温度感应的灵敏度，本发明通过将钕铁硼硬磁材料和MnZn铁氧体软磁材料结合起来采用增材制造工艺组合加工，制造一种高性能磁芯，避免了传统的异质材料磁性中使用胶水的问题，同时，磁性得到控制，可以实现铁硼硬磁材料磁场的隔离，再者，解决了一般钕铁硼硬磁材料外电镀工艺不环保、难以通过72h盐雾试验、高温剥落等问题。
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：
一种增材制造磁芯，包括包覆物和内嵌物两种磁性材料，所述的外包覆物磁性材料为MnZn铁氧体软磁材料，所述内嵌物磁性材料为钕铁硼硬磁材料；所述MnZn铁氧体软磁材料通过增材制造工艺完全包覆在钕铁硼硬磁材料外侧。
进一步的，所述的增材制造工艺为选择性激光烧结技术（Selected lasersintering,SLS）。
进一步的，所述的MnZn铁氧体软磁材料为具有随居里点导磁、失磁变化的软磁材料。
进一步的，所述的MnZn铁氧体软磁材料在居里温度点附近可隔离钕铁硼硬磁材料的磁场。
一种包含上述增材制造磁芯的磁性器件。
实施例2：
MnZn铁氧体软磁材料包括以下重量份的物质组分：46份Fe2O3、19份Mn3O4、28份ZnO、3份碳纤维、2份石墨烯、适量的去离子水。
MnZn铁氧体软磁材料的制备方法如下：
（1）配料：按重量份折合成物质质量分别按量称取物质质量备用；
（2）将步骤（1）已经称好质量的Fe2O3、Mn3O4、ZnO、碳纤维混合用行星式球磨机以2倍的去离子水湿磨2h，然后在100℃烘30min干燥过筛，随后用马弗炉在10μPa的氧压力1100℃下煅烧2.5h得预烧粉备用；
（3）将预烧粉中加入石墨烯,在星式球磨机二次球磨6h，在100℃烘20min至干燥，然后放入马弗炉中按照一定的升温速度从100℃生至1300℃保温5h，进行平衡气氛烧结，即得。
实施例3：
MnZn铁氧体软磁材料包括以下重量份的物质组分：50份Fe2O3、20份Mn3O4、30份ZnO、3.5份碳纤维、2.5份石墨烯、适量的去离子水。
MnZn铁氧体软磁材料的制备方法如下：
（1）配料：按重量份折合成物质质量分别按量称取物质质量备用；
（2）将步骤（1）已经称好质量的Fe2O3、Mn3O4、ZnO、碳纤维混合用行星式球磨机以2倍的去离子水湿磨2h，然后在100℃烘35min干燥过筛，随后用马弗炉在10μPa的氧压力1100℃下煅烧2.5h得预烧粉备用；
（3）将预烧粉中加入石墨烯,在星式球磨机二次球磨6h，在100℃烘25min至干燥，然后放入马弗炉中按照一定的升温速度从100℃生至1300℃保温5h，进行平衡气氛烧结，即得。
实施例4：
MnZn铁氧体软磁材料包括以下重量份的物质组分：54份Fe2O3、23份Mn3O4、32份ZnO、4份碳纤维、3份石墨烯、适量的去离子水。
MnZn铁氧体软磁材料的制备方法如下：
（1）配料：按重量份折合成物质质量分别按量称取物质质量备用；
（2）将步骤（1）已经称好质量的Fe2O3、Mn3O4、ZnO、碳纤维混合用行星式球磨机以2倍的去离子水湿磨2h，然后在100℃烘40min干燥过筛，随后用马弗炉在10μPa的氧压力1100℃下煅烧2.5h得预烧粉备用；
（3）将预烧粉中加入石墨烯,在星式球磨机二次球磨6h，在100℃烘30min至干燥，然后放入马弗炉中按照一定的升温速度从100℃生至1300℃保温5h，进行平衡气氛烧结，即得。
分别对实施例2-4所得到的MnZn铁氧体软磁材料进行了主要性能测试，测试结果如下：
| 实施例1 | 实施例2 | 实施例3 | |
| 饱和磁通密度Bs(MT) | 416.4 | 430.3 | 410.2 |
| 起始磁导率μi | 139.8 | 158.2 | 146.9 |
| 功率损耗(W.m-3)Pcv | 84.5 | 78.9 | 86.5 |
Claims (7)
1.一种增材制造磁芯，其特征在于，包括包覆物和内嵌物两种磁性材料，所述的外包覆物磁性材料为MnZn铁氧体软磁材料，所述内嵌物磁性材料为钕铁硼硬磁材料；所述MnZn铁氧体软磁材料通过增材制造工艺完全包覆在钕铁硼硬磁材料外侧。
2.根据权利要求1所述的一种增材制造磁芯，其特征在于：所述的增材制造工艺为选择性激光烧结技术。
3.根据权利要求1所述的一种增材制造磁芯，其特征在于：所述的MnZn铁氧体软磁材料为具有随居里点导磁、失磁变化的软磁材料。
4.根据权利要求4所述的一种增材制造磁芯，其特征在于：所述的MnZn铁氧体软磁材料包括以下重量份的物质组分：46-54份Fe2O3、19-23份Mn3O4、28-32份ZnO、3-4份碳纤维、2-3份石墨烯、适量的去离子水。
5.根据权利要求4所述的一种增材制造磁芯，其特征在于：所述的MnZn铁氧体软磁材料的制备方法如下：
（1）配料：按重量份折合成物质质量分别按量称取物质质量备用；
（2）将步骤（1）已经称好质量的Fe2O3、Mn3O4、ZnO、碳纤维混合用行星式球磨机以2倍的去离子水湿磨2h，然后在100℃烘30-40min干燥过筛，随后用马弗炉在10μPa的氧压力1100℃下煅烧2.5h得预烧粉备用；
（3）将预烧粉中加入石墨烯,在星式球磨机二次球磨6h，在100℃烘20 -30min至干燥，然后放入马弗炉中按照一定的升温速度从100℃生至1300℃保温5h，进行平衡气氛烧结，即得。
6.根据权利要求1-5任一项所述的一物质种增材制造磁芯，其特征在于：所述的MnZn铁氧体软磁材料在居里温度点附近可隔离钕铁硼硬磁材料的磁场。
7.一种包含权利要求6所述的增材制造磁芯的磁性器件。
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