CN106396662A - 一种低损耗MnZn铁氧体及其烧结工艺 - Google Patents

一种低损耗MnZn铁氧体及其烧结工艺 Download PDF

Info

Publication number
CN106396662A
CN106396662A CN201610792191.9A CN201610792191A CN106396662A CN 106396662 A CN106396662 A CN 106396662A CN 201610792191 A CN201610792191 A CN 201610792191A CN 106396662 A CN106396662 A CN 106396662A
Authority
CN
China
Prior art keywords
oxygen content
low
mnzn ferrite
temperature
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610792191.9A
Other languages
English (en)
Other versions
CN106396662B (zh
Inventor
吕东华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hengdian Group DMEGC Magnetics Co Ltd
Original Assignee
Hengdian Group DMEGC Magnetics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hengdian Group DMEGC Magnetics Co Ltd filed Critical Hengdian Group DMEGC Magnetics Co Ltd
Priority to CN201610792191.9A priority Critical patent/CN106396662B/zh
Publication of CN106396662A publication Critical patent/CN106396662A/zh
Application granted granted Critical
Publication of CN106396662B publication Critical patent/CN106396662B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—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
    • 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
    • C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
    • C04B35/2633—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing barium, strontium or calcium
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—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
    • 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
    • C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • C04B35/64—Burning or sintering processes
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/34—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 soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/342—Oxides
    • H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3251—Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3293—Tin oxides, stannates or oxide forming salts thereof, e.g. indium tin oxide [ITO]
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/658—Atmosphere during thermal treatment
    • C04B2235/6583—Oxygen containing atmosphere, e.g. with changing oxygen pressures
    • C04B2235/6584—Oxygen containing atmosphere, e.g. with changing oxygen pressures at an oxygen percentage below that of air

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Magnetic Ceramics (AREA)

Abstract

本发明公开了一种低损耗MnZn铁氧体及其烧结工艺。它主要由主配方和子配方两部分组成，所述的主配方包括Fe2O3、ZnO和MnO，其中：Fe2O3为52.7‑52.9mol％，ZnO为9.2‑11.2mol％，其余为MnO；所述的子配方包括SnO2、CaCO3、ZrO2和Nb2O5，将低损耗MnZn铁氧体放入钟罩炉中烧结，通过对升温段的升温速度、保温段的保温温度以及降温段的氧气含量控制，使得晶粒均匀生长，减少内应力。本发明的有益效果是：通过CaCO3、ZrO2和Nb2O5三者的联合添加，提高晶界的电阻率，同时细化晶粒，使得晶粒均匀生长；通过加入SnO2提高晶粒内部的电阻率；通过对升温段的升温速度、保温段的保温温度以及降温段的氧气含量控制，使得晶粒均匀生长，减少内应力。

Description

一种低损耗MnZn铁氧体及其烧结工艺
技术领域
本发明涉及软磁铁氧体材料相关技术领域，尤其是指一种低损耗MnZn铁氧体及其烧结工艺。
背景技术
MnZn铁氧体广泛应用于电子、通讯领域作为电源变压器材料。传统开关电源的输出功率与材料直接相关的参数就是材料的饱和磁通密度。高饱和磁通密度的材料可以使开关电源更加小型化、薄型化。材料的功率损耗会影响电能的转化效率，越低功率损耗，器件的转化效率越高。
目前国际上100℃时损耗最低的软磁MnZn铁氧体材料为TDK公司的PC47，但是随着电子元器件的小型和高效化的发展，要求进一步降低工作温度点的损耗。
国内外软磁铁氧体生产厂家，都为此进行大量的研制和量产，但是还没有厂家公开生产100℃损耗低于250kW/m3的铁氧体。
发明内容
本发明是为了克服现有技术中存在上述的不足，提供了一种降低涡流损耗和磁滞损耗的低损耗MnZn铁氧体及其烧结工艺。
为了实现上述目的，本发明采用以下技术方案：
一种低损耗MnZn铁氧体，主要由主配方和子配方两部分组成，所述的主配方包括Fe2O3、ZnO和MnO，其中：Fe2O3为52.7-52.9mol％，ZnO为9.2-11.2mol％，其余为MnO；所述的子配方包括SnO2、CaCO3、ZrO2和Nb2O5。
通过CaCO3、ZrO2和Nb2O5三者的联合添加，提高晶界的电阻率，同时细化晶粒，使得晶粒均匀生长，通过加入SnO2提高晶粒内部的电阻率，从而降低了涡流损耗和磁滞损耗。
作为优选，所述的子配方是按主配方的总重量百分比进行添加的，其中：SnO2为0.07-0.15wt％，CaCO3为0.06-0.08wt％，ZrO2为0.03-0.04wt％，Nb2O5为0.01-0.02wt％。
本发明还提供了一种低损耗MnZn铁氧体的烧结工艺，将低损耗MnZn铁氧体放入钟罩炉中烧结，通过对升温段的升温速度、保温段的保温温度以及降温段的氧气含量控制，使得晶粒均匀生长，减少内应力，具体操作步骤如下：
(1)升温段：由900℃升温到保温段的保温温度时，升温速度控制在1℃/分钟；
(2)保温段：保温温度为1290℃-1300℃，保温时间为180分钟-300分钟；
(3)降温段：在氮气保护下冷却，注重1250℃-1050℃的氧气含量控制，其中：1250℃的氧气含量在2％-4％，1200℃的氧气含量在1％-2％，1150℃的氧气含量在0.8％-0.25％，1050℃的氧气含量在0.2％-0.15％。
本发明的有益效果是：通过CaCO3、ZrO2和Nb2O5三者的联合添加，提高晶界的电阻率，同时细化晶粒，使得晶粒均匀生长；通过加入SnO2提高晶粒内部的电阻率；通过对升温段的升温速度、保温段的保温温度以及降温段的氧气含量控制，使得晶粒均匀生长，减少内应力。
具体实施方式
下面结合具体实施方式对本发明做进一步的描述。
实施例1：
将52.7mol％的Fe2O3和9.2mol％的ZnO，其余为MnO的量，按料球水的比例为1∶4∶0.45的比例进行混合，在砂磨中砂磨1小时，然后喷雾造粒，在回转窑中进行预烧，将0.06wt％的CaCO3，0.04wt％的ZrO2，0.01wt％的Nb2O5和0.08wt％的SnO2按预烧料的质量加入到预烧料中，在砂磨机中砂磨160分钟，喷雾造粒。在一定压力下压制成标环。放入钟罩炉中烧结，烧结温度为1300℃，保温300分钟。然后在氮气保护下冷却至室温。
对比例1：
将53.2mol％的Fe2O3和9.2mol％的ZnO，其余为MnO的量，按料球水的比例为1∶4∶0.45的比例进行混合，在砂磨中砂磨1小时，然后喷雾造粒，在回转窑中进行预烧，将0.06wt％的CaCO3，0.04wt％的ZrO2，0.01wt％的Nb2O5和0.08wt％的SnO2按预烧料的质量加入到预烧料中，在砂磨机中砂磨160分钟，喷雾造粒。在一定压力下压制成标环。放入钟罩炉中烧结，烧结温度为1300℃，保温300分钟。然后在氮气保护下冷却至室温。
将实施例1和比较例1的两组样环进行测试，具体数据见表1。
表1实施例1和对比例1样环性能对比
由表1可得，在比较例1中由于主配方中Fe2O3的含量过高，使得整体损耗偏高。
实施例2
将52.8mol％的Fe2O3和10.2mol％的ZnO，其余为MnO的量，按料球水的比例为1∶4∶0.45的比例进行混合，在砂磨机中砂磨1小时，然后喷雾造粒，在回转窑中进行预烧，将0.06wt％的CaCO3，0.04wt％的ZrO2，0.01wt％的Nb2O5和0.09wt％的SnO2按预烧料的质量加入到预烧料中，在砂磨机中砂磨160分钟，喷雾造粒。在一定压力下压制成标环。放入钟罩炉中烧结，烧结温度为1300℃，保温300分钟。然后在氮气保护下冷却至室温。
比较例2
将52.8mol％的Fe2O3和10.2mol％的ZnO，其余为MnO的量，按料球水的比例为1∶4∶0.45的比例进行混合，在砂磨机中砂磨1小时，然后喷雾造粒，在回转窑中进行预烧，将0.06wt％的CaCO3，0.04wt％的ZrO2，0.01wt％的Nb2O5按预烧料的质量加入到预烧料中，在砂磨机中砂磨160分钟，喷雾造粒。在一定压力下压制成标环。放入钟罩炉中烧结，烧结温度为1300℃，保温300分钟。然后在氮气保护下冷却至室温。
将实施例2和比较例2的两组样环进行测试，具体数据见表2。
表2实施例2和对比例2样环性能对比
由表2可得，在比较例2中由于子配方中未加入SnO2，使得涡流损耗增加，整体损耗偏高。
实施例3：
将52.9mol％的Fe2O3和11.2mol％的ZnO，其余为MnO的量，按料球水的比例为1∶4∶0.45的比例进行混合，在砂磨机中砂磨1小时，然后喷雾造粒，在回转窑中进行预烧，将0.08wt％的CaCO3，0.03wt％的ZrO2，0.01wt％的Nb2O5和0.1wt％的SnO2按预烧料的质量加入到预烧料中，在砂磨机中砂磨160分钟，喷雾造粒。在一定压力下压制成标环。放入钟罩炉中烧结，由900℃升温到1300℃时，升温速度控制在1℃/分钟；保温温度为1300℃，保温300分钟；然后在氮气保护下冷却，在降温段1250℃时氧气含量在4％，1200℃时氧气含量在1.5％，1150℃时氧气含量为0.5％，1050℃时氧气含量为0.15％。
比较例3
将52.9mol％的Fe2O3和11.2mol％的ZnO，其余为MnO的量，按料球水的比例为1∶4∶0.45的比例进行混合，在砂磨机中砂磨1小时，然后喷雾造粒，在回转窑中进行预烧，将0.08wt％的CaCO3，0.03wt％的ZrO2，0.01wt％的Nb2O5和0.1wt％的SnO2按预烧料的质量加入到预烧料中，在砂磨机中砂磨160分钟，喷雾造粒。在一定压力下压制成标环。放入钟罩炉中烧结由900℃升温到1300℃时，升温速度控制在1℃/分钟；保温温度为1300℃，保温300分钟；然后在氮气保护下冷却，在降温段1250℃时氧气含量在4％，1200℃时氧气含量在1.5％，1150℃时氧气含量为1％，1050℃时氧气含量为0.5％。
将实施例3和比较例3的两组样环进行测试，具体数据见表3。
表3实施例3和对比例3样环性能对比
由表3可得，在比较例3中由于烧结工艺的降温段中1150℃和1050℃的氧气含量过高，出现了一定程度的氧化，使得损耗增加。

Claims (3)

1.一种低损耗MnZn铁氧体，其特征是，主要由主配方和子配方两部分组成，所述的主配方包括Fe2O3、ZnO和MnO，其中：Fe2O3为52.7-52.9mol％，ZnO为9.2-11.2mol％，其余为MnO；所述的子配方包括SnO2、CaCO3、ZrO2和Nb2O5。
2.根据权利要求1所述的一种低损耗MnZn铁氧体，其特征是，所述的子配方是按主配方的总重量百分比进行添加的，其中：SnO2为0.07-0.15wt％，CaCO3为0.06-0.08wt％，ZrO2为0.03-0.04wt％，Nb2O5为0.01-0.02wt％。
3.根据权利要求1或2所述的一种低损耗MnZn铁氧体的烧结工艺，其特征是，将低损耗MnZn铁氧体放入钟罩炉中烧结，通过对升温段的升温速度、保温段的保温温度以及降温段的氧气含量控制，使得晶粒均匀生长，减少内应力，具体操作步骤如下：
(1)升温段：由900℃升温到保温段的保温温度时，升温速度控制在1℃/分钟；
(2)保温段：保温温度为1290℃-1300℃，保温时间为180分钟-300分钟；
(3)降温段：在氮气保护下冷却，注重1250℃-1050℃的氧气含量控制，其中：1250℃时氧气含量在2％-4％，1200℃时氧气含量在1％-2％，1150℃时氧气含量在0.8％-0.25％，1050℃时氧气含量在0.2％-0.15％。
CN201610792191.9A 2016-08-31 2016-08-31 一种低损耗MnZn铁氧体及其烧结工艺 Active CN106396662B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610792191.9A CN106396662B (zh) 2016-08-31 2016-08-31 一种低损耗MnZn铁氧体及其烧结工艺

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610792191.9A CN106396662B (zh) 2016-08-31 2016-08-31 一种低损耗MnZn铁氧体及其烧结工艺

Publications (2)

Publication Number Publication Date
CN106396662A true CN106396662A (zh) 2017-02-15
CN106396662B CN106396662B (zh) 2019-02-26

Family

ID=58001313

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610792191.9A Active CN106396662B (zh) 2016-08-31 2016-08-31 一种低损耗MnZn铁氧体及其烧结工艺

Country Status (1)

Country Link
CN (1) CN106396662B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107731503A (zh) * 2017-09-14 2018-02-23 重庆正峰电子有限公司 贴片式电感磁芯的配对磁芯及其制造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002319503A (ja) * 2001-04-24 2002-10-31 Asahi Kasei Corp 磁石用固形材料及びその製造方法
CN1749210A (zh) * 2005-08-05 2006-03-22 横店集团东磁有限公司 一种MnZn功率铁氧体材料
CN102693802A (zh) * 2012-02-15 2012-09-26 横店集团东磁股份有限公司 一种宽温MnZn功率铁氧体材料及其制备方法
CN102693803A (zh) * 2012-02-23 2012-09-26 横店集团东磁股份有限公司 一种宽温低损耗MnZn功率铁氧体及其制备方法
CN102693807A (zh) * 2012-02-23 2012-09-26 横店集团东磁股份有限公司 一种超宽温低损耗高磁通密度MnZn功率铁氧体及其制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002319503A (ja) * 2001-04-24 2002-10-31 Asahi Kasei Corp 磁石用固形材料及びその製造方法
CN1749210A (zh) * 2005-08-05 2006-03-22 横店集团东磁有限公司 一种MnZn功率铁氧体材料
CN102693802A (zh) * 2012-02-15 2012-09-26 横店集团东磁股份有限公司 一种宽温MnZn功率铁氧体材料及其制备方法
CN102693803A (zh) * 2012-02-23 2012-09-26 横店集团东磁股份有限公司 一种宽温低损耗MnZn功率铁氧体及其制备方法
CN102693807A (zh) * 2012-02-23 2012-09-26 横店集团东磁股份有限公司 一种超宽温低损耗高磁通密度MnZn功率铁氧体及其制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107731503A (zh) * 2017-09-14 2018-02-23 重庆正峰电子有限公司 贴片式电感磁芯的配对磁芯及其制造方法

Also Published As

Publication number Publication date
CN106396662B (zh) 2019-02-26

Similar Documents

Publication Publication Date Title
CN103496963B (zh) 一种不含Ni的兼具双重特性的MnZn铁氧体磁心及制造方法
CN104529425B (zh) 一种宽温高磁导率MnZn铁氧体材料及其制造方法
CN102219487B (zh) 一种宽温低损耗MnZn铁氧体材料及其制造方法
CN101857426B (zh) 一种宽频高阻抗MnZn铁氧体材料及其制造方法
CN108275992B (zh) 宽温低功耗高磁导率锰锌铁氧体材料及其制备方法
CN104934181B (zh) 一种软磁MnZn系功率铁氧体
CN105565790A (zh) Yr950宽温高直流叠加低功耗锰锌铁氧体材料及其制备方法
CN105198395B (zh) 一种耐热冲击功率镍锌铁氧体及其制备方法
CN104591712B (zh) 用于‑20～140℃的低损耗锰锌铁氧体材料及其制造方法
CN111689770A (zh) 一种高温高Bs低损耗软磁铁氧体材料及其制备方法
CN113087512B (zh) 高频率稳定性高磁导率的MnZn铁氧体材料及制备方法
CN111470857B (zh) 一种高频锰锌铁氧体材料及其制备方法
CN103524124A (zh) 一种高磁导率MnZn铁氧体材料的烧结方法
CN108275994B (zh) 宽温低功耗高直流叠加特性锰锌铁氧体及其制备方法
CN112694323A (zh) 一种宽温高Bs锰锌铁氧体磁性材料及其制备方法
CN112979301A (zh) 高频高温低损耗MnZn功率铁氧体材料及其制备方法
CN107459344A (zh) 一种宽温低损耗且高Bs的MnZn铁氧体材料及其制造方法
CN104529426B (zh) 用于120～160℃的高Bs低损耗锰锌铁氧体材料及其制造方法
CN113024239A (zh) 一种宽温超低损耗锰锌铁氧体材料及其制备方法
CN114436636A (zh) 一种差共模电感用高磁导率锰锌铁氧体材料及其制备方法
CN105399411A (zh) 一种锰锌铁氧体低温烧结工艺
CN103664158A (zh) 一种高Bs低功耗锰锌功率铁氧体材料及其制造方法
CN106396662A (zh) 一种低损耗MnZn铁氧体及其烧结工艺
CN112898007A (zh) 超富铁高磁通密度的锰锌铁氧体材料及其制备方法和应用
CN103664155B (zh) 一种超高Bs低损耗MnZn功率铁氧体材料及其制造方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant