CN108777205A - 一种铁硅铝复合磁粉芯及其制备方法 - Google Patents
一种铁硅铝复合磁粉芯及其制备方法 Download PDFInfo
- Publication number
- CN108777205A CN108777205A CN201810378830.6A CN201810378830A CN108777205A CN 108777205 A CN108777205 A CN 108777205A CN 201810378830 A CN201810378830 A CN 201810378830A CN 108777205 A CN108777205 A CN 108777205A
- Authority
- CN
- China
- Prior art keywords
- powder core
- parts
- core
- composite magnetic
- magnetic powder
- 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.)
- Pending
Links
Classifications
-
- 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
- H01F1/14—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 metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/02—Amorphous alloys with iron as the major constituent
-
- 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
- H01F1/14—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 metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dispersion Chemistry (AREA)
- Soft Magnetic Materials (AREA)
Abstract
本发明公开了一种铁硅铝复合磁粉芯,其原料包括:铁硅铝磁粉芯、铁基非晶磁粉芯、脱膜剂、粘接剂。本发明还提出铁硅铝复合磁粉芯的制备方法,包括如下步骤:将Si、Al、Ti、Fe,加入真空炉中熔炼后,浇成铸锭,在氮气气氛下经破碎、球磨、过筛制得铁硅铝磁粉芯;将铁基非晶薄带脆化处理后,在氮气气氛下经球磨、过筛制得铁基非晶磁粉芯;将铁硅铝磁粉芯和铁基非晶磁粉芯中加入脱膜剂及粘接剂混合均匀,模压成型制得胚体后,经热处理制得铁硅铝复合磁粉芯。本发明制得铁硅铝复合磁粉芯的磁导率高和磁芯损耗小,综合性能优异。
Description
技术领域
本发明涉及软磁材料技术领域,尤其涉及一种铁硅铝复合磁粉芯及其制备方法。
背景技术
软磁材料主要为容易反复磁化,在外磁场去掉后容易退磁的材料。它的矫顽力Hc很低,一般不大于1000A/m,磁滞回线窄,起始磁导率与最大磁导率很高,根据软磁材料的结构状态可以分为晶态、非晶态及纳米软磁材料。随着电子产品高频化和大功率化要求的不断提高,磁性元件向氢、薄、小的方向发展,晶态铁硅铝磁粉芯具有特殊的磁性能和良好的性价比,在输出电感、线路滤波器、功率因素校正器等电子器件中应用广泛,市场需求日益增加。在早期,铁硅铝磁粉芯工作频率比较低,只要求高的磁导率而对低损耗要求不高,随着铁硅铝磁粉芯应用的工作频率越来越高,如何降低磁芯损耗成为亟待解决技术问题。
发明内容
基于背景技术存在的技术问题,本发明提出了一种铁硅铝复合磁粉芯,减少磁芯损耗,提高磁性能。
本发明提出一种铁硅铝复合磁粉芯,其原料按重量份包括:原子百分比组成为Fe83.6~84.8Si9.3~9.7Al5.3~5.7Ti0.6~1.0的铁硅铝磁粉芯45~60份,原子百分比组成为Fe80.9~ 82.9Si9.3~9.7B7.5~8.5Cu0.2~0.6Mo0.1~0.3的铁基非晶磁粉芯40~55份,脱膜剂0.5~1.5份,粘接剂1.5~4.0份。
优选地,脱膜剂为硬脂酸锌、硬脂酸铝、硬脂酸钡中的一种或多种。
优选地,粘接剂为环氧树脂、酚醛树脂、硅酮树脂中的一种或多种。
本发明还提出上述铁硅铝复合磁粉芯的制备方法,包括如下步骤:
S1、按重量百分含量将Si9.3~9.7wt%、Al5.3~5.7wt%、Ti0.6~1.0wt%、Fe83.6~84.8wt%加入真空炉中熔炼后,浇成铸锭,在氮气气氛下经破碎、球磨、过筛制得铁硅铝磁粉芯;
S2、将原子百分比组成为Fe80.9~82.9Si9.3~9.7B7.5~8.5Cu0.2~0.6Mo0.1~0.3的铁基非晶薄带脆化处理后,在氮气气氛下经球磨、过筛制得铁基非晶磁粉芯;
S3、将铁硅铝磁粉芯和铁基非晶磁粉芯中加入脱膜剂及粘接剂混合均匀,模压成型制得胚体后,经热处理制得铁硅铝复合磁粉芯。
优选地,S1中铁硅铝磁粉芯粒度及其重量份包括:125~150μm 2~4份,75~125μm13~17份,45~75μm 45~55份,10~45μm 40~50份。
优选地,S2中非晶磁粉芯粒度及其重量份包括:105~150μm 55~75份,50~105μm10~30份,15~50μm 15~25份。
优选地,S2中脆化处理温度为400~500℃,脆化处理时间1~1.5h。
优选地,S3中模压成型压力为16~20t/cm2,胚体密度为5.6~6.5g/cm3。
优选地,S3中热处理采用如下工艺:将胚体在氮气保护下以10~20℃/min的升温速率升温至650~700℃,保温1~2h,冷却至室温制得铁硅铝复合磁粉芯。
铁基非晶磁粉芯的原子排列无序,不存在晶粒、晶界及孪晶的缺陷,相比晶态铁硅铝磁粉有更高的磁导率和更低的矫顽力,且原子无序造成散射电阻,大大降低涡流损耗,本发明采用铁硅铝磁粉芯和铁基非晶磁粉芯配合,通过合理控制两者比重及元素百分比含量,制得绝缘性好、涡流损耗低的磁粉颗粒,显著低磁芯损耗,提高磁性能;采用不同粒径的晶体和非晶磁粉颗粒适合比重相互配合,利用大粒径的磁粉提升磁粉芯的磁导率及小粒径磁粉降低磁粉芯损耗的特性,提高磁粉颗粒后续压制过程中变形的均匀性和协调性,综合平衡磁粉芯的磁导率和损耗;采用适合的成型压力,减少磁粉内部位错,并通热处理和退火处理,防止脱膜剂和粘接剂分解导致涡流损耗增加和消除模压过程中磁粉产生的内应力,改善磁粉芯的电磁特性;本发明通过对磁粉芯配比合理设计及制备步骤控制的配合,提高绝缘性能,降低磁芯损耗,提高磁粉芯的综合性能,制备工艺简单、成本低。
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
本发明提出一种铁硅铝复合磁粉芯,其原料按重量份包括:原子百分比组成为Fe84.8Si9.3Al5.3Ti0.6的铁硅铝磁粉芯45份,原子百分比组成为Fe82.9Si9.3B7.5Cu0.2Mo0.1的铁基非晶磁粉芯40份,硬脂酸锌0.5份,环氧树脂1.5份。
实施例2
本发明提出一种铁硅铝复合磁粉芯,其原料按重量份包括:原子百分比组成为Fe83.6Si9.7Al5.7Ti1.0的铁硅铝磁粉芯60份,原子百分比组成为Fe80.9Si9.7B8.5Cu0.6Mo0.3的铁基非晶磁粉芯55份,硬脂酸铝1.5份,硅酮树脂4.0份。
实施例3
本发明提出一种铁硅铝复合磁粉芯,其原料按重量份包括:原子百分比组成为Fe84.2Si9.5Al5.5Ti0.8的铁硅铝磁粉芯55份,原子百分比组成为Fe81.9Si9.5B8Cu0.4Mo0.2的铁基非晶磁粉芯45份,硬脂酸铝1.0份,酚醛树脂2.7份。
上述铁硅铝复合磁粉芯的制备方法,包括如下步骤:
S1、按重量百分含量将Si9.5wt%、Al5.5wt%、Ti0.8wt%、Fe84.2wt%加入真空炉中熔炼后,浇成铸锭,在氮气气氛下经破碎、球磨、过筛制得粒度及其重量份包括:125~150μm 1.1份、75~125μm 7.2份、45~75μm 24.8份、10~45μm21.9份的铁硅铝磁粉芯;
S2、将原子百分比组成为Fe81.9Si9.5B8Cu0.4Mo0.2的铁基非晶薄带在温度为400℃,脆化处理1.5h后,在氮气气氛下经球磨、过筛制得粒度及其重量份包括:105~150μm 24.8份,50~105μm 13.5份,15~50μm 6.7份的铁基非晶磁粉芯;
S3、将铁硅铝磁粉芯和铁基非晶磁粉芯中加入硬脂酸铝和酚醛树脂混合均匀,经18cm2的压力模压成型制得密度为5.8g/cm3的胚体,经15℃/min的升温速率升温至680℃,保温1.5h,冷却至室温制得铁硅铝复合磁粉芯。
实施例4
本发明提出一种铁硅铝复合磁粉芯,其原料按重量份包括:原子百分比组成为Fe84.2Si9.5Al5.5Ti0.8的铁硅铝磁粉芯55份,原子百分比组成为Fe81.9Si9.5B8Cu0.4Mo0.2的铁基非晶磁粉芯45份,硬脂酸铝1.0份,酚醛树脂2.7份。
上述铁硅铝复合磁粉芯的制备方法,包括如下步骤:
S1、按重量百分含量将Si9.5wt%、Al5.5wt%、Ti0.8wt%、Fe84.2wt%加入真空炉中熔炼后,浇成铸锭,在氮气气氛下经破碎、球磨、过筛制得粒度及其重量份包括:125~150μm 1.7份、75~125μm 7.4份、45~75μm 24份、10~45μm21.9份的铁硅铝磁粉芯;
S2、将原子百分比组成为Fe81.9Si9.5B8Cu0.4Mo0.2的铁基非晶薄带在温度为500℃,脆化处理1h后,在氮气气氛下经球磨、过筛制得粒度及其重量份包括:105~150μm 26份,50~105μm 10.3份,15~50μm 8.7份的铁基非晶磁粉芯;
S3、将铁硅铝磁粉芯和铁基非晶磁粉芯中加入硬脂酸锌、硬脂酸铝、环氧树脂、酚醛树脂混合均匀,经20cm2的压力模压成型制得密度为6.5g/cm3的胚体,经10℃/min的升温速率升温至660℃,保温1.2h,冷却至室温制得铁硅铝复合磁粉芯。
将实施例1~4中铁硅铝复合磁粉芯经性能测试测得数据如下表1。
表1磁导率和磁芯损耗测试数据
磁导率/(H/m)(50kHz,0.05T) | 磁芯损耗/(W/cm3)(50kHz,0.05mT) | |
实施例1 | 136 | 65 |
实施例2 | 135 | 63 |
实施例3 | 138 | 66 |
实施例4 | 140 | 68 |
通过上述测试结果可知,实施例1~4制得铁硅铝复合磁粉芯具有较高的磁导率和较低的磁损耗,综合性能优异。
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 (9)
1.一种铁硅铝复合磁粉芯,其特征在于,其原料按重量份包括:原子百分比组成为Fe83.6~84.8Si9.3~9.7Al5.3~5.7Ti0.6~1.0的铁硅铝磁粉芯45~60份,原子百分比组成为Fe80.9~ 82.9Si9.3~9.7B7.5~8.5Cu0.2~0.6Mo0.1~0.3的铁基非晶磁粉芯40~55份,脱膜剂0.5~1.5份,粘接剂1.5~4.0份。
2.根据权利要求1所述铁硅铝复合磁粉芯,其特征在于,脱膜剂为硬脂酸锌、硬脂酸铝、硬脂酸钡中的一种或多种。
3.根据权利要求1或2所述铁硅铝复合磁粉芯,其特征在于,粘接剂为环氧树脂、酚醛树脂、硅酮树脂中的一种或多种。
4.一种如权利要求1-3任一项所述铁硅铝复合磁粉芯的制备方法,其特征在于,包括如下步骤:
S1、按重量百分含量将Si9.3~9.7wt%、Al5.3~5.7wt%、Ti0.6~1.0wt%、Fe83.6~84.8wt%加入真空炉中熔炼后,浇成铸锭,在氮气气氛下经破碎、球磨、过筛制得铁硅铝磁粉芯;
S2、将原子百分比组成为Fe80.9~82.9Si9.3~9.7B7.5~8.5Cu0.2~0.6Mo0.1~0.3的铁基非晶薄带脆化处理后,在氮气气氛下经球磨、过筛制得铁基非晶磁粉芯;
S3、将铁硅铝磁粉芯和铁基非晶磁粉芯中加入脱膜剂及粘接剂混合均匀,模压成型制得胚体后,经热处理制得铁硅铝复合磁粉芯。
5.根据权利要求4所述铁硅铝复合磁粉芯的制备方法,其特征在于,S1中铁硅铝磁粉芯粒度及其重量份包括:125~150μm 2~4份,75~125μm 13~17份,45~75μm 45~55份,10~45μm 40~50份。
6.根据权利要求4或5所述铁硅铝复合磁粉芯的制备方法,其特征在于,S2中铁基非晶磁粉芯粒度及其重量份包括:105~150μm 55~75份,50~105μm 10~30份,15~50μm 15~25份。
7.根据权利要求4-5任一项所述铁硅铝复合磁粉芯的制备方法,其特征在于,S2中脆化处理温度为400~500℃,脆化处理时间1~1.5h。
8.根据权利要求1-7任一项所述铁硅铝复合磁粉芯的制备方法,其特征在于,S3中模压成型压力为16~20t/cm2,胚体密度为5.6~6.5g/cm3。
9.根据权利要求1-8任一项所述铁硅铝复合磁粉芯的制备方法,其特征在于,S3中热处理采用如下工艺:将胚体在氮气保护下以10~20℃/min的升温速率升温至650~700℃,保温1~2h,冷却至室温制得铁硅铝复合磁粉芯。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810378830.6A CN108777205A (zh) | 2018-04-25 | 2018-04-25 | 一种铁硅铝复合磁粉芯及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810378830.6A CN108777205A (zh) | 2018-04-25 | 2018-04-25 | 一种铁硅铝复合磁粉芯及其制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN108777205A true CN108777205A (zh) | 2018-11-09 |
Family
ID=64026560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810378830.6A Pending CN108777205A (zh) | 2018-04-25 | 2018-04-25 | 一种铁硅铝复合磁粉芯及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108777205A (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112980199A (zh) * | 2021-04-19 | 2021-06-18 | 闽都创新实验室 | 低频交变磁场屏蔽用有机硅复合磁性材料及其制备方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5141622A (zh) * | 1974-10-07 | 1976-04-08 | Matsushita Electric Ind Co Ltd | |
JPS60141817A (ja) * | 1983-12-28 | 1985-07-26 | Hitachi Metals Ltd | 磁気ヘツドコア材の製造法 |
JPH05311352A (ja) * | 1991-04-20 | 1993-11-22 | Mitsumi Electric Co Ltd | Fe−Si−Al系合金単結晶 |
CN101796207A (zh) * | 2008-03-31 | 2010-08-04 | 日立金属株式会社 | 非晶态合金薄带,纳米晶态软磁性合金和磁芯 |
CN106229104A (zh) * | 2016-08-31 | 2016-12-14 | 北京康普锡威科技有限公司 | 一种软磁复合粉末及其磁粉芯制备方法 |
CN107240471A (zh) * | 2017-05-18 | 2017-10-10 | 安泰科技股份有限公司 | 高饱和磁感应强度的复合磁粉、磁芯及其制备方法 |
-
2018
- 2018-04-25 CN CN201810378830.6A patent/CN108777205A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5141622A (zh) * | 1974-10-07 | 1976-04-08 | Matsushita Electric Ind Co Ltd | |
JPS60141817A (ja) * | 1983-12-28 | 1985-07-26 | Hitachi Metals Ltd | 磁気ヘツドコア材の製造法 |
JPH05311352A (ja) * | 1991-04-20 | 1993-11-22 | Mitsumi Electric Co Ltd | Fe−Si−Al系合金単結晶 |
CN101796207A (zh) * | 2008-03-31 | 2010-08-04 | 日立金属株式会社 | 非晶态合金薄带,纳米晶态软磁性合金和磁芯 |
CN106229104A (zh) * | 2016-08-31 | 2016-12-14 | 北京康普锡威科技有限公司 | 一种软磁复合粉末及其磁粉芯制备方法 |
CN107240471A (zh) * | 2017-05-18 | 2017-10-10 | 安泰科技股份有限公司 | 高饱和磁感应强度的复合磁粉、磁芯及其制备方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112980199A (zh) * | 2021-04-19 | 2021-06-18 | 闽都创新实验室 | 低频交变磁场屏蔽用有机硅复合磁性材料及其制备方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6662436B2 (ja) | 圧粉磁心の製造方法 | |
US8048191B2 (en) | Compound magnetic powder and magnetic powder cores, and methods for making them thereof | |
CN111133540B (zh) | 压粉磁芯的制造方法、压粉磁芯以及电感器 | |
KR101385756B1 (ko) | Fe계 비정질 금속분말의 제조방법 및 이를 이용한 비정질 연자성 코어의 제조방법 | |
JP5522173B2 (ja) | 複合磁性体及びその製造方法 | |
CN112509777B (zh) | 一种软磁合金材料及其制备方法和应用 | |
CN102031445A (zh) | 一种制备高磁能积、高矫顽力、低成本烧结钕铁硼的方法 | |
CN109680210B (zh) | 一种μ=150~250铁硅铝软磁磁粉芯的制备方法 | |
CN109461558A (zh) | 一种低损耗铁硅铝磁粉芯复合包覆方法 | |
JP2015167183A (ja) | ナノ結晶軟磁性合金粉末およびそれを用いた圧粉磁芯 | |
CN100429728C (zh) | 压制铁硅铝磁粉芯用粉末的制造方法 | |
CN103666364A (zh) | 金属软磁复合材料用有机绝缘粘结剂及制备金属软磁复合材料方法 | |
CN113724958A (zh) | 一种基于还原铁粉合金化生产铁基软磁铁芯制备方法 | |
CN107424711B (zh) | 用于制造磁粉芯和模压电感的铁基复合粉末及其制备方法 | |
CN103377786B (zh) | 一种铁硅铝合金磁粉芯的制备方法 | |
TW201738908A (zh) | 壓粉芯、該壓粉芯之製造方法、具該壓粉芯之電感器、及安裝有該電感器之電子・電氣機器 | |
CN106531393B (zh) | 高导纳米晶磁芯及其制备方法 | |
CN113744948B (zh) | 非晶磁粉芯前驱体颗粒、非晶磁粉芯、其制备方法及电感器件 | |
CN108777205A (zh) | 一种铁硅铝复合磁粉芯及其制备方法 | |
CN106653273A (zh) | 一种铁硅铝‑铁氧体复合磁芯及其制备方法 | |
JP2009147252A (ja) | 複合磁性材料およびその製造方法 | |
CN112582123B (zh) | 低温度系数高使用温度烧结钐钴磁体的制备方法 | |
CN115798911A (zh) | 一种一体成型电感及其制备方法与功率电器 | |
CN113380487B (zh) | 一种一体成型电感用磁芯粉末及其制备方法 | |
CN113628825A (zh) | 一种铁基非晶复合磁粉芯及其制备方法和应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181109 |