CN106866131A - 一种高性能永磁铁氧体的制备方法 - Google Patents

一种高性能永磁铁氧体的制备方法 Download PDF

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CN106866131A
CN106866131A CN201710098398.0A CN201710098398A CN106866131A CN 106866131 A CN106866131 A CN 106866131A CN 201710098398 A CN201710098398 A CN 201710098398A CN 106866131 A CN106866131 A CN 106866131A
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卞文进
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HAIAN COUNTY JULI MAGNETIC MATERIALS CO Ltd
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    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2641—Compositions containing one or more ferrites of the group comprising rare earth metals and one or more ferrites of the group comprising alkali metals, alkaline earth metals or lead
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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Abstract

本发明提供了一种高性能永磁铁氧体的制备方法，以铁氧体预烧料和稀土添加剂为原料，包括下列步骤：1）称取适量的铁氧体预烧料和稀土添加剂，混合后进行球磨；2）进行干燥制粉；3）干压磁场成型；4）进行压坯烧结；5）将制得的产品进行充磁，得到永磁铁氧体，所述的铁氧体预烧料为M型SrFe12O19，所述的稀土添加剂为Dy2O3、La2O3、Co2O3和Pr6O11中的一种或多种。利用本发明的方法制成的永磁铁氧体，具有很高的磁性能，能够用于制造永磁同步电机等要求较高的泵体。

Description

一种高性能永磁铁氧体的制备方法
技术领域
本发明涉及一种高性能永磁铁氧体的制备方法。
背景技术
永磁铁氧体的成型工艺主要有干压和湿压两种，其中湿压成型的产品性能普遍高于干压成型的产品，但是产品的成型速度慢、合格率低，干压成型的生产优势要高于湿压成型，成型速度快、合格率高，便于生产小尺寸和形状复杂的产品。
目前，干压产品的磁性能普遍不高，一般较好的干压材料剩磁在360-370mT，内禀矫顽力在220KA/m-240KA/m。干压产品主要用于玩具电机，产品附加值不高，不适用于要求较高的泵体类永磁同步小电机。
发明内容
本发明的目的是克服现有技术的不足之处，提供一种高性能永磁铁氧体的制备方法。
本发明的高性能永磁铁氧体的制备方法，以铁氧体预烧料和稀土添加剂为原料，包括下列步骤：
1）称取适量的铁氧体预烧料和稀土添加剂，混合后进行球磨；
2）进行干燥制粉；
3）干压磁场成型；
4）进行压坯烧结；
5）将制得的产品进行充磁，得到永磁铁氧体；
所述的铁氧体预烧料为M型SrFe12O19。
所述的稀土添加剂为Dy2O3、La2O3、Co2O3和Pr6O11中的一种或多种。
优选地，
所述的压坯烧结步骤中，升温速度为3-4度/min，烧结温度为1200-1300度。
利用本发明的方法制成的永磁铁氧体，具有很高的磁性能，能够用于制造永磁同步电机等要求较高的泵体。
具体实施方式
下面结合实施例来对本发明作进一步的详细说明。
实施例1
本发明的高性能永磁铁氧体的制备方法，以铁氧体预烧料和稀土添加剂为原料，包括下列步骤：
1）称取适量的铁氧体预烧料和稀土添加剂，混合后进行球磨；
2）进行干燥制粉；
3）干压磁场成型；
4）进行压坯烧结；
5）将制得的产品进行充磁，得到永磁铁氧体。
所述的铁氧体预烧料为M型SrFe12O19。
所述的稀土添加剂为Dy2O3。
所述的压坯烧结步骤中，升温速度为3度/min，烧结温度为1200度。
实施例2
本发明的高性能永磁铁氧体的制备方法，以铁氧体预烧料和稀土添加剂为原料，包括下列步骤：
1）称取适量的铁氧体预烧料和稀土添加剂，混合后进行球磨；
2）进行干燥制粉；
3）干压磁场成型；
4）进行压坯烧结；
5）将制得的产品进行充磁，得到永磁铁氧体。
所述的铁氧体预烧料为M型SrFe12O19。
所述的稀土添加剂为La2O3。
所述的压坯烧结步骤中，升温速度为4度/min，烧结温度为1300度。
实施例3
本发明的高性能永磁铁氧体的制备方法，以铁氧体预烧料和稀土添加剂为原料，包括下列步骤：
1）称取适量的铁氧体预烧料和稀土添加剂，混合后进行球磨；
2）进行干燥制粉；
3）干压磁场成型；
4）进行压坯烧结；
5）将制得的产品进行充磁，得到永磁铁氧体。
所述的铁氧体预烧料为M型SrFe12O19。
所述的稀土添加剂为Co2O3和Pr6O11。
所述的压坯烧结步骤中，升温速度为3.5度/min，烧结温度为1250度。

Claims (2)

1.一种高性能永磁铁氧体的制备方法，其特征在于，以铁氧体预烧料和稀土添加剂为原料，包括下列步骤：
1）称取适量的铁氧体预烧料和稀土添加剂，混合后进行球磨；
2）进行干燥制粉；
3）干压磁场成型；
4）进行压坯烧结；
5）将制得的产品进行充磁，得到永磁铁氧体；
所述的铁氧体预烧料为M型SrFe12O19；
所述的稀土添加剂为Dy2O3、La2O3、Co2O3和Pr6O11中的一种或多种。
2.根据权利要求1所述的高性能永磁铁氧体的制备方法，其特征在于，所述的压坯烧结步骤中，升温速度为3-4度/min，烧结温度为1200-1300度。
CN201710098398.0A 2017-02-23 2017-02-23 一种高性能永磁铁氧体的制备方法 Pending CN106866131A (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107337448A (zh) * 2017-07-14 2017-11-10 海安县巨力磁材有限责任公司 一种永磁铁氧体的生产方法
CN111470858A (zh) * 2020-06-19 2020-07-31 北矿磁材（阜阳）有限公司 一种耐高压的永磁铁氧体磁体及其制造方法
EP3832677A4 (en) * 2018-08-31 2022-05-25 Dowa Electronics Materials Co., Ltd. FERRITE POWDER FOR BOND MAGNET AND METHOD FOR PRODUCTION THEREOF
CN115536378A (zh) * 2022-09-16 2022-12-30 山东麦格智芯机电科技有限公司 高均匀性多级磁环铁氧体的制备方法

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107337448A (zh) * 2017-07-14 2017-11-10 海安县巨力磁材有限责任公司 一种永磁铁氧体的生产方法
EP3832677A4 (en) * 2018-08-31 2022-05-25 Dowa Electronics Materials Co., Ltd. FERRITE POWDER FOR BOND MAGNET AND METHOD FOR PRODUCTION THEREOF
CN111470858A (zh) * 2020-06-19 2020-07-31 北矿磁材（阜阳）有限公司 一种耐高压的永磁铁氧体磁体及其制造方法
CN111470858B (zh) * 2020-06-19 2022-10-28 北矿磁材（阜阳）有限公司 一种耐高压的永磁铁氧体磁体及其制造方法
CN115536378A (zh) * 2022-09-16 2022-12-30 山东麦格智芯机电科技有限公司 高均匀性多级磁环铁氧体的制备方法

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