CN107129291A - 具有高频低温度系数低损耗MnZn软磁铁氧体材料及其制备方法 - Google Patents

具有高频低温度系数低损耗MnZn软磁铁氧体材料及其制备方法 Download PDF

Info

Publication number
CN107129291A
CN107129291A CN201710453159.2A CN201710453159A CN107129291A CN 107129291 A CN107129291 A CN 107129291A CN 201710453159 A CN201710453159 A CN 201710453159A CN 107129291 A CN107129291 A CN 107129291A
Authority
CN
China
Prior art keywords
ball milling
accessory ingredient
soft magnetic
powder
magnetic ferrite
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
CN201710453159.2A
Other languages
English (en)
Other versions
CN107129291B (zh
Inventor
严密
霍骅鑫
白国华
包大新
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.)
Zhejiang University ZJU
Original Assignee
Zhejiang University ZJU
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 Zhejiang University ZJU filed Critical Zhejiang University ZJU
Priority to CN201710453159.2A priority Critical patent/CN107129291B/zh
Publication of CN107129291A publication Critical patent/CN107129291A/zh
Application granted granted Critical
Publication of CN107129291B publication Critical patent/CN107129291B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26Shaped 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
    • C04B35/2608Compositions 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
    • C04B35/2633Compositions 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
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26Shaped 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
    • C04B35/265Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64Burning or sintering processes
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208Calcium oxide or oxide-forming salts thereof, e.g. lime
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3232Titanium oxides or titanates, e.g. rutile or anatase
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3239Vanadium oxides, vanadates or oxide forming salts thereof, e.g. magnesium vanadate
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3251Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts thereof
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3256Molybdenum oxides, molybdates or oxide forming salts thereof, e.g. cadmium molybdate
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3258Tungsten oxides, tungstates, or oxide-forming salts thereof
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3262Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3275Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3284Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates or oxide forming salts thereof
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3293Tin oxides, stannates or oxide forming salts thereof, e.g. indium tin oxide [ITO]
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3298Bismuth oxides, bismuthates or oxide forming salts thereof, e.g. zinc bismuthate
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656Aspects 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

Landscapes

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

Abstract

本发明公开了一种具有高频低温度系数低损耗MnZn软磁铁氧体材料及其制备方法,该材料以Fe2O3:68wt%~72wt%、ZnO:5wt%~9wt%、MnO:余量为主成分,通过一次球磨、一次烧结、二次配料、二次球磨、造粒、压制成型、二次烧结等步骤制备而成。本发明的创新性在于通过合适的成分配比,离子复合掺杂与替代和材料制备技术,形成了无畴壁结构,抑制了畴壁共振,得到的MnZn功率铁氧体最高可以在5MHz的频率下工作,且该材料具有较高温度稳定性和较低功率损耗。

Description

具有高频低温度系数低损耗MnZn软磁铁氧体材料及其制备 方法
技术领域
本发明涉及一种具有高频低温度系数低损耗MnZn软磁铁氧体材料及其制备方法,属于磁性材料技术领域。
背景技术
软磁铁氧体作为一种重要的元器件材料,主要制成磁心用于各种电感器、变压器、滤波器和扼流圈的制造,广泛应用在现代电力及电子信息等领域,如电脑及其外部设备、办公自动化设备、数字通信和模拟通信设备、互联网、家用电器、电磁兼容设备、绿色照明装置、工业自动化和汽车、航空、航天及军事领域。相对于其他软磁材料,软磁铁氧体的优势在于电阻率相对较高,这抑制了涡流的产生,使铁氧体能应用于高频领域;采用陶瓷工艺易于制成各种不同的形状和尺寸;化学特性稳定、不生锈;较低的制造成本。
随着工业与科学技术的不断进步,保证优异磁性能的同时,电子元器件在更加趋于高频化,小型化,要求更低的工作损耗,更宽的使用温度范围。因此,通过不同的技术来开发高频低损耗的软磁铁氧体磁芯具有重要的实际意义。现有的MnZn软磁铁氧体材料工作频率一般在1MHz以下,如中国专利(CN104446409A)中所制备的MnZn铁氧体只适合于工作在0.1~1MHz的频率下,中国专利(CN103833344A)中所制备的锰锌功率铁氧体可在2MHz及以下工作频率下使用,少数MnZn铁氧体材料工作频率可以达到3MHz,但是其磁导率,工作温度范围以及功率损耗等性能相对较差。因此,通过不同的技术来开发应用在1~5MH的高频低温度系数低损耗的软磁铁氧体磁芯具有重要的实际意义。
发明内容
本发明的目的在于提供一种能够在1~5MHz工作条件下使用的高频低温度系数低损耗MnZn软磁铁氧体材料及其制备方法。
为实现上述目的,本发明采用的方案如下:
具有高频低温度系数低损耗MnZn软磁铁氧体材料的制备方法包括如下步骤:
(1)一次配料
称取主成分,主成分组成如下:Fe2O3:68wt%~72wt%、ZnO:5wt%~9wt%、MnO:余量;
(2)一次球磨
将主成分均匀混合,将所称取的主成分放入球磨机,球磨3~10h,得到一次球磨粉料;
(3)一次烧结
将第一次球磨所得的粉料在空气气氛下以200~300℃/h的速度升温到800~1000℃,保温1~3h,随炉冷却得到一次烧结粉料;
(4)二次配料
在一次烧结粉料中添加下述三类副成分,其中,第一类副成分包括SiO2、CaO、CaCO3、Li2O、Al2O3中的一种或多种,第二类副成分包括V2O5、CuO、TiO2、Bi2O3、WO3、Nb2O5、MoO3中的一种或多种,第三类副成分包括SnO2、CoO、Co3O4、Co2O3,ZrO2、In2O3、Ta2O5中的一种或多种,三类副成分的添加总量不超过一次烧结粉料的3wt%;
(5)二次球磨
将二次配料后得到的粉料均匀混合后放入球磨机,球磨3~10h,得到二次球磨粉料;
(6)造粒
根据二次球磨后的粉料总重量,加入聚乙烯醇水溶液,其中聚乙烯醇的加入量为粉料总质量的3wt%~10wt%,先预压之后研磨过筛成颗粒;
(7)压制成型
向造粒所得的颗粒料中添加聚乙烯醇水溶液,其中聚乙烯醇的加入量为颗粒料总质量的3wt%~10wt%,压制成型为生坯产品,生坯密度要达到2.6~3.6g/cm3
(8)二次烧结
烧结温度为1200~1400℃,保温2~14h,烧结过程中通过添加氮气使平衡氧分压控制在4%以下,冷却出炉得到MnZn软磁铁氧体材料。
优选的,:按主成分总重量计,三类副成分中各成分被选择作为添加成分时,各自的添加量如下:
第一类副成分:SiO2:500~2000ppm,CaO:1000~4000ppm,CaCO3:1500~5000ppm,Li2O:500~1000ppm,Al2O3:1000~2000ppm,
第二类副成分:V2O5:500~1500ppm,CuO:500~2000ppm,TiO2:500~2500ppm,Bi2O3:500~3500ppm,WO3:400~1000ppm,Nb2O5:2000~4000ppm,MoO3:400~1000ppm,
第三类副成分:SnO2:500~1500ppm,CoO:400~1200ppm,Co3O4:400~1200ppm,Co2O3:400~1500ppm,ZrO2:200~500ppm,In2O3:500~2000ppm,Ta2O5:200~1000ppm。
即当选择SiO2单独作为第一类副成分时,其添加量按主成分总重量计为500~2000ppm;当选择SiO2和CaO共同作为第一类副成分时,SiO2添加量按主成分总重量计仍为500~2000ppm,CaO的添加量按主成分总重量计1000~4000ppm;其它组分的添加量同理。
所述方法制备得到的具有高频低温度系数低损耗MnZn软磁铁氧体材料形成了无畴壁结构,在100℃,1MHz,50mT的工作条件下,功率损耗低于150kW m-3,在100℃,3MHz,10mT的工作条件下,功率损耗低于150kW m-3,在100℃,3MHz,30mT工作条件下,功率损耗低于500kW m-3,在100℃,5MHz,10mT的工作条件下,功率损耗低于500kW m-3,初始磁导率高于500,在工作温度范围内,功率损耗随温度变化不超过50%,磁导率随温度的变化不超过20%。
本发明的有益效果是:
对于广泛应用于各种元器件的高频MnZn铁氧体材料,通常希望其能在更宽的温度范围内具有很低的功率损耗,本发明通过在二次配料中添加三种不同类型的副成分,以及在烧结工艺上的合理控制,得到了在1~5MHz的高频条件下适用温度范围大于150℃且各性能参数的温度稳定性较好,较低功率损耗的软磁MnZn铁氧体材料。
具体实施方式
下面通过具体的实施案例,对本发明所制备的MnZn铁氧体材料及制备工艺进一步具体说明。
实施案例1:
选用的主成分的含量以氧化物计为:Fe2O3:71.2wt%、ZnO:5.82wt%、MnO:余量,将主成分进行一次球磨1h,在930℃预烧2h得到黑色粉末;将预烧得到的黑色粉末加入按主成分的总量计的副成分,副成分含量以氧化物计算为第一类副成分:SiO2:500ppm,CaO:1500ppm,第二类副成分:V2O5:1000ppm,Nb2O5:3000ppm,第三类副成分:SnO2:1000ppm,CoO:500ppm,并加入适量的去离子水,二次球磨4h,得到粒径0.7~2μm的粉体颗粒,且粒径分布服从正态分布;将二次球磨后的颗粒烘干后研磨分散,加入聚乙烯醇造粒,过筛得到锰锌铁氧体粉料;将造粒得到的粉料压制成型,放入气氛烧结炉中烧结,烧结温度为1250℃,保温3h,烧结过程中通过添加氮气使平衡氧分压控制在4%以下,冷却出炉得到MnZn软磁铁氧体材料。
实施案例1制备得到的MnZn软磁铁氧体材料的初始磁导率为650,其25℃时的饱和磁感应强度为520mT,100℃时的饱和磁感应强度为430mT,在50mT、100℃、1MHz的测试条件下,其功率损耗为150kW m-3,在30mT、100℃、3MHz的测试条件下,其功率损耗为480kW m-3,在10mT、100℃、5MHz的测试条件下,其功率损耗为500kW m-3,在150℃下,磁导率未出现明显下降。
实施案例2:
选用的主成分的含量以氧化物计为:Fe2O3:71.64wt%、ZnO:5.46wt%、MnO:余量,将主成分进行一次球磨1h,在930℃预烧2h得到黑色粉末;将预烧得到的黑色粉末加入按主成分的总量计的副成分,副成分含量以氧化物计算为第一类副成分:SiO2:1000ppm,CaCO3:2000ppm,第二类副成分:TiO2:2000ppm,MoO3:500ppm,第三类副成分:Co3O4:800ppm,ZrO2:300ppm,并加入适量的去离子水,二次球磨4h,得到粒径0.7~2μm的粉体颗粒,且粒径分布服从正态分布;将二次球磨后的颗粒烘干后研磨分散,加入聚乙烯醇造粒,过筛得到锰锌铁氧体粉料;将造粒得到的粉料压制成型,放入气氛烧结炉中烧结,烧结温度为1250℃,保温3h,烧结过程中通过添加氮气使平衡氧分压控制在4%以下,冷却出炉得到MnZn软磁铁氧体材料。
实施案例2制备得到的MnZn软磁铁氧体材料的初始磁导率为600,其25℃时的饱和磁感应强度为510mT,100℃时的饱和磁感应强度为420mT,在50mT、100℃、1MHz的测试条件下,其功率损耗为146kW m-3,在30mT、100℃、3MHz的测试条件下,其功率损耗为500kW m-3,在10mT、100℃、5MHz的测试条件下,其功率损耗为496kW m-3,在150℃下,磁导率未出现明显下降。
实施案例3:
选用的主成分的含量以氧化物计为:Fe2O3:71.2wt%、ZnO:5.82wt%、MnO:余量,将主成分进行一次球磨1h,在930℃预烧2h得到黑色粉末;将预烧得到的黑色粉末加入按主成分的总量计的副成分,副成分含量以氧化物计算为第一类副成分:SiO2:500ppm,,Al2O3:1000ppm,第二类副成分:Bi2O3:1500ppm,WO3:500ppm,第三类副成分:Co2O3:1000ppm,In2O3:1000ppm,并加入适量的去离子水,二次球磨4h,得到粒径0.7~2μm的粉体颗粒,且粒径分布服从正态分布;将二次球磨后的颗粒烘干后研磨分散,加入聚乙烯醇造粒,过筛得到锰锌铁氧体粉料;将造粒得到的粉料压制成型,放入气氛烧结炉中烧结,烧结温度为1250℃,保温3h,烧结过程中通过添加氮气使平衡氧分压控制在4%以下,冷却出炉得到MnZn软磁铁氧体材料。
实施案例3制备得到的MnZn软磁铁氧体材料的初始磁导率为650,其25℃时的饱和磁感应强度为510mT,100℃时的饱和磁感应强度为420mT,在50mT、100℃、1MHz的测试条件下,其功率损耗为148kW m-3,在30mT、100℃、3MHz的测试条件下,其功率损耗为486kW m-3,在10mT、100℃、5MHz的测试条件下,其功率损耗为478kW m-3,在150℃下,磁导率未出现明显下降。
实施案例4:
选用的主成分的含量以氧化物计为:Fe2O3:71.64wt%、ZnO:5.46wt%、MnO:余量,将主成分进行一次球磨1h,在930℃预烧2h得到黑色粉末;将预烧得到的黑色粉末加入按主成分的总量计的副成分,副成分含量以氧化物计算为第一类副成分:CaO:1500ppm,Al2O3:1500ppm,第二类副成分:CuO:1000ppm,TiO2:2000ppm,第三类副成分:SnO2:1000ppm,Ta2O5:500ppm,并加入适量的去离子水,二次球磨4h,得到粒径0.7~2μm的粉体颗粒,且粒径分布服从正态分布;将二次球磨后的颗粒烘干后研磨分散,加入聚乙烯醇造粒,过筛得到锰锌铁氧体粉料;将造粒得到的粉料压制成型,放入气氛烧结炉中烧结,烧结温度为1250℃,保温3h,烧结过程中通过添加氮气使平衡氧分压控制在4%以下,冷却出炉得到MnZn软磁铁氧体材料。
实施案例4制备得到的MnZn软磁铁氧体材料的初始磁导率为550,其25℃时的饱和磁感应强度为530mT,100℃时的饱和磁感应强度为430mT,在50mT、100℃、1MHz的测试条件下,其功率损耗为150kW m-3,在30mT、100℃、3MHz的测试条件下,其功率损耗为495kW m-3,在10mT、100℃、5MHz的测试条件下,其功率损耗为483kW m-3,在150℃下,磁导率未出现明显下降。
比较案例1:
选用的主成分的含量以氧化物计为:Fe2O3:71.2wt%、ZnO:5.82wt%、MnO:余量,将主成分进行一次球磨1h,在930℃预烧2h得到黑色粉末;将预烧得到的黑色粉末加入适量的去离子水,二次球磨4h,得到粒径0.7~2μm的粉体颗粒,且粒径分布服从正态分布;将二次球磨后的颗粒烘干后研磨分散,加入聚乙烯醇造粒,过筛得到锰锌铁氧体粉料;将造粒得到的粉料压制成型,放入气氛烧结炉中烧结,烧结温度为1250℃,保温3h,烧结过程中通过添加氮气使平衡氧分压控制在4%以下,冷却出炉得到MnZn软磁铁氧体材料。
比较案例1制备得到的MnZn软磁铁氧体材料的初始磁导率为850,其25℃时的饱和磁感应强度为500mT,100℃时的饱和磁感应强度为380mT,在50mT、100℃、1MHz的测试条件下,其功率损耗为320kW m-3,在30mT、100℃、3MHz的测试条件下,其功率损耗为865kW m-3,在10mT、100℃、5MHz的测试条件下,其功率损耗为1458kW m-3
比较案例2:
选用的主成分的含量以氧化物计为:Fe2O3:71.64wt%、ZnO:5.46wt%、MnO:余量,将主成分进行一次球磨1h,在930℃预烧2h得到黑色粉末;将预烧得到的黑色粉末加入按主成分的总量计的副成分,副成分含量以氧化物计算为第一类副成分:SiO2:500ppm,CaO:1500ppm,并加入适量的去离子水,二次球磨4h,得到粒径0.7~2μm的粉体颗粒,且粒径分布服从正态分布;将二次球磨后的颗粒烘干后研磨分散,加入聚乙烯醇造粒,过筛得到锰锌铁氧体粉料;将造粒得到的粉料压制成型,放入气氛烧结炉中烧结,烧结温度为1250℃,保温3h,烧结过程中通过添加氮气使平衡氧分压控制在4%以下,冷却出炉得到MnZn软磁铁氧体材料。
实施案例1制备得到的MnZn软磁铁氧体材料的初始磁导率为650,其25℃时的饱和磁感应强度为480mT,100℃时的饱和磁感应强度为360mT,在50mT、100℃、1MHz的测试条件下,其功率损耗为380kW m-3,在30mT、100℃、3MHz的测试条件下,其功率损耗为730kW m-3,在10mT、100℃、5MHz的测试条件下,其功率损耗为1325kW m-3
对比实施案例1与比较案例1,可以发现第一类副成分:SiO2:500ppm,CaO:1500ppm,第二类副成分:V2O5:1000ppm,Nb2O5:3000ppm,第三类副成分:SnO2:1000ppm,CoO:500ppm的复合添加,通过合理的制备工艺参数制备得到的MnZn铁氧体在1~5MHz具有较低的功率损耗,且初始磁导率大于500,磁性能没有被过度破坏,并且饱和磁感应强度得到了提高。
对比实施案例1与比较案例2,可以发现如果只添加第一类副成分:SiO2:500ppm,CaO:1500ppm,材料的性能不能得到充分提高,说明第二类副成分:V2O5:1000ppm,Nb2O5:3000ppm,第三类副成分:SnO2:1000ppm,CoO:500ppm的复合添加对MnZn铁氧体在1~5MHz应用时的功率损耗和磁感应强度都有优化作用。
对比实施案例2与比较案例1,可以发现第一类副成分:SiO2:1000ppm,CaCO3:2000ppm,第二类副成分:TiO2:2000ppm,MoO3:500ppm,第三类副成分:Co3O4:800ppm,ZrO2:300ppm的复合添加,通过合理的制备工艺参数制备得到的MnZn铁氧体在1~5MHz具有较低的功率损耗,且初始磁导率大于500,磁性能没有被过度破坏,并且饱和磁感应强度得到了提高。
对比实施案例3与比较案例1,可以发现第一类副成分:SiO2:500ppm,,Al2O3:1000ppm第二类副成分:Bi2O3:1500ppm,WO3:500ppm,第三类副成分:Co2O3:1000ppm,In2O3:1000ppm的复合添加,通过合理的制备工艺参数制备得到的MnZn铁氧体在1~5MHz具有较低的功率损耗,且初始磁导率大于500,磁性能没有被过度破坏,并且饱和磁感应强度得到了提高。
对比实施案例3与比较案例2,可以发现如果只添加第一类副成分:SiO2:500ppm,CaO:1500ppm,材料的性能不能得到充分提高,说明第二类副成分:Bi2O3:1500ppm,WO3:500ppm,第三类副成分:Co2O3:1000ppm,In2O3:1000ppm的复合添加对MnZn铁氧体在1~5MHz应用时的功率损耗和磁感应强度都有优化作用。
对比实施案例4与比较案例1,可以发现第一类副成分:CaO:1500ppm,Al2O3:1500ppm,第二类副成分:CuO:1000ppm,TiO2:2000ppm,第三类副成分:SnO2:1000ppm,Ta2O5:500ppm的复合添加,通过合理的制备工艺参数制备得到的MnZn铁氧体在1~5MHz具有较低的功率损耗,且初始磁导率大于500,磁性能没有被过度破坏,并且饱和磁感应强度得到了提高。

Claims (3)

1.一种具有高频低温度系数低损耗MnZn软磁铁氧体材料的制备方法,其特征在于包括如下步骤:
(1)一次配料
称取主成分,主成分组成如下:Fe2O3:68wt%~72wt%、ZnO:5wt%~9wt%、MnO:余量;
(2)一次球磨
将主成分均匀混合,将所称取的主成分放入球磨机,球磨3~10h,得到一次球磨粉料;
(3)一次烧结
将第一次球磨所得的粉料在空气气氛下以200~300℃/h的速度升温到800~1000℃,保温1~3h,随炉冷却得到一次烧结粉料;
(4)二次配料
在一次烧结粉料中添加下述三类副成分,其中,第一类副成分包括SiO2、CaO、CaCO3、Li2O、Al2O3中的一种或多种,第二类副成分包括V2O5、CuO、TiO2、Bi2O3、WO3、Nb2O5、MoO3中的一种或多种,第三类副成分包括SnO2、CoO、Co3O4、Co2O3,ZrO2、In2O3、Ta2O5中的一种或多种,三类副成分的添加总量不超过一次烧结粉料的3wt%;
(5)二次球磨
将二次配料后得到的粉料均匀混合后放入球磨机,球磨3~10h,得到二次球磨粉料;
(6)造粒
根据二次球磨后的粉料总重量,加入聚乙烯醇水溶液,其中聚乙烯醇的加入量为粉料总质量的3wt%~10wt%,先预压之后研磨过筛成颗粒;
(7)压制成型
向造粒所得的颗粒料中添加聚乙烯醇水溶液,其中聚乙烯醇的加入量为颗粒料总质量的3wt%~10wt%,压制成型为生坯产品,生坯密度要达到2.6~3.6g/cm3
(8)二次烧结
烧结温度为1200~1400℃,保温2~14h,烧结过程中通过添加氮气使平衡氧分压控制在4%以下,冷却出炉得到MnZn软磁铁氧体材料。
2.根据权利要求1所述的具有高频低温度系数低损耗MnZn软磁铁氧体材料的制备方法,其特征在于:按主成分总重量计,三类副成分中各成分被选择添加时的添加量如下:
第一类副成分:SiO2:500~2000ppm,CaO:1000~4000ppm,CaCO3:1500~5000ppm,Li2O:500~1000ppm,Al2O3:1000~2000ppm,
第二类副成分:V2O5:500~1500ppm,CuO:500~2000ppm,TiO2:500~2500ppm,Bi2O3:500~3500ppm,WO3:400~1000ppm,Nb2O5:2000~4000ppm,MoO3:400~1000ppm,
第三类副成分:SnO2:500~1500ppm,CoO:400~1200ppm,Co3O4:400~1200ppm,Co2O3:400~1500ppm,ZrO2:200~500ppm,In2O3:500~2000ppm,Ta2O5:200~1000ppm。
3.一种如权利要求1所述方法制备得到的具有高频低温度系数低损耗MnZn软磁铁氧体材料,其特征在于所述的MnZn软磁铁氧体材料形成了无畴壁结构,在100℃,1MHz,50mT的工作条件下,功率损耗低于150kW-3,在100℃,3MHz,10mT的工作条件下,功率损耗低于150kW-3,在100℃,3MHz,30mT工作条件下,功率损耗低于500kW-3,在100℃,5MHz,10mT的工作条件下,功率损耗低于500kW-3,初始磁导率高于500,在工作温度范围内,功率损耗随温度变化不超过50%,磁导率随温度的变化不超过20%。
CN201710453159.2A 2017-06-15 2017-06-15 具有高频低温度系数低损耗MnZn软磁铁氧体材料及其制备方法 Active CN107129291B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710453159.2A CN107129291B (zh) 2017-06-15 2017-06-15 具有高频低温度系数低损耗MnZn软磁铁氧体材料及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710453159.2A CN107129291B (zh) 2017-06-15 2017-06-15 具有高频低温度系数低损耗MnZn软磁铁氧体材料及其制备方法

Publications (2)

Publication Number Publication Date
CN107129291A true CN107129291A (zh) 2017-09-05
CN107129291B CN107129291B (zh) 2018-05-01

Family

ID=59734778

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710453159.2A Active CN107129291B (zh) 2017-06-15 2017-06-15 具有高频低温度系数低损耗MnZn软磁铁氧体材料及其制备方法

Country Status (1)

Country Link
CN (1) CN107129291B (zh)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107573051A (zh) * 2017-09-20 2018-01-12 横店集团东磁股份有限公司 一种不提高损耗改善MnZn功率铁氧体磁芯强度的方法
CN108987062A (zh) * 2018-07-05 2018-12-11 浙江大学 一种铁氧体-软磁合金复合磁芯及其制备方法
CN109354489A (zh) * 2018-11-12 2019-02-19 横店集团东磁股份有限公司 一种高频低损耗铁氧体材料及其制备方法
CN109384463A (zh) * 2018-12-30 2019-02-26 常熟浩博电子科技有限公司 高频高能效转换MnZn铁氧体及其制备方法
CN110128124A (zh) * 2019-05-13 2019-08-16 海宁联丰磁业股份有限公司 一种宽温超低损耗软磁铁氧体材料及其制备方法
CN111116191A (zh) * 2019-12-31 2020-05-08 天长市中德电子有限公司 一种高磁导率低损耗锰锌软磁铁氧体材料及其制备方法
CN112456994A (zh) * 2020-11-27 2021-03-09 天通控股股份有限公司 一种低温烧结高频低损耗MnZn软磁铁氧体及其制备方法
CN112851327A (zh) * 2021-02-24 2021-05-28 同济大学 低损耗的钽-硅复合掺杂锰锌铁氧体材料及其制备方法
CN112979300A (zh) * 2021-02-24 2021-06-18 同济大学 一种高频低损耗的钽掺杂锰锌铁氧体材料及其制备方法
CN112979299A (zh) * 2021-02-19 2021-06-18 成都灏众科技有限公司 一种功率型低温烧结铁氧体材料及其制备方法
CN113135749A (zh) * 2021-04-21 2021-07-20 湖北华磁电子科技有限公司 宽温高效软磁铁氧体材料及材料的制备方法
CN113185276A (zh) * 2021-05-13 2021-07-30 湖北华磁电子科技有限公司 常温高标软磁铁氧体材料及材料的制备方法
CN114477988A (zh) * 2022-03-28 2022-05-13 天通控股股份有限公司 一种易成型、高强度铁氧体材料及其制备方法
CN114685154A (zh) * 2022-04-27 2022-07-01 湖北华磁电子科技有限公司 一种高频宽温超低损耗铁氧体材料及其制备工艺
CN115286376A (zh) * 2022-07-01 2022-11-04 信丰天科磁业有限公司 一种掺杂型锰锌软磁铁氧体磁芯及其制造方法
CN115724656A (zh) * 2022-11-14 2023-03-03 陕西煤业化工技术研究院有限责任公司 一种锰锌功率铁氧体材料及其制备方法、开关电源变压器
WO2023045074A1 (zh) * 2021-09-24 2023-03-30 天通控股股份有限公司 一种超高频高磁导率低损耗锰锌软磁铁氧体及制备方法
WO2023093123A1 (zh) 2021-11-26 2023-06-01 横店集团东磁股份有限公司 一种宽温低损耗高强度MnZn功率铁氧体及其制备方法与应用
CN116217215A (zh) * 2023-03-17 2023-06-06 无锡斯贝尔磁性材料有限公司 一种高频低功耗JF51W MnZn铁氧体材料
CN116490467A (zh) * 2020-10-20 2023-07-25 株式会社东金 MnZn系铁氧体
CN117902891A (zh) * 2024-03-15 2024-04-19 天通控股股份有限公司 一种单畴结构高频高工作磁密锰锌软磁铁氧体及制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020096665A1 (en) * 2000-11-28 2002-07-25 Minebea Co., Ltd. Production process of Mn-Zn ferrite
CN101256866A (zh) * 2007-12-29 2008-09-03 电子科技大学 宽温超低损耗MnZn软磁铁氧体材料及制备方法
CN101620907A (zh) * 2009-06-05 2010-01-06 南京精研磁性技术有限公司 低待机功耗fpt型宽温软磁铁氧体材料及其制备方法
CN102992752A (zh) * 2012-11-23 2013-03-27 天长市昭田磁电科技有限公司 一种锰锌MnZn软磁铁氧体材料的制备方法
CN106810233A (zh) * 2017-01-19 2017-06-09 东莞易力禾电子有限公司 高频低损耗锰锌铁氧体及其制造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020096665A1 (en) * 2000-11-28 2002-07-25 Minebea Co., Ltd. Production process of Mn-Zn ferrite
CN101256866A (zh) * 2007-12-29 2008-09-03 电子科技大学 宽温超低损耗MnZn软磁铁氧体材料及制备方法
CN101620907A (zh) * 2009-06-05 2010-01-06 南京精研磁性技术有限公司 低待机功耗fpt型宽温软磁铁氧体材料及其制备方法
CN102992752A (zh) * 2012-11-23 2013-03-27 天长市昭田磁电科技有限公司 一种锰锌MnZn软磁铁氧体材料的制备方法
CN106810233A (zh) * 2017-01-19 2017-06-09 东莞易力禾电子有限公司 高频低损耗锰锌铁氧体及其制造方法

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107573051A (zh) * 2017-09-20 2018-01-12 横店集团东磁股份有限公司 一种不提高损耗改善MnZn功率铁氧体磁芯强度的方法
CN108987062A (zh) * 2018-07-05 2018-12-11 浙江大学 一种铁氧体-软磁合金复合磁芯及其制备方法
CN109354489B (zh) * 2018-11-12 2021-02-26 横店集团东磁股份有限公司 一种高频低损耗铁氧体材料及其制备方法
CN109354489A (zh) * 2018-11-12 2019-02-19 横店集团东磁股份有限公司 一种高频低损耗铁氧体材料及其制备方法
CN109384463A (zh) * 2018-12-30 2019-02-26 常熟浩博电子科技有限公司 高频高能效转换MnZn铁氧体及其制备方法
CN110128124A (zh) * 2019-05-13 2019-08-16 海宁联丰磁业股份有限公司 一种宽温超低损耗软磁铁氧体材料及其制备方法
CN110128124B (zh) * 2019-05-13 2021-12-07 海宁联丰磁业股份有限公司 一种宽温超低损耗软磁铁氧体材料及其制备方法
CN111116191A (zh) * 2019-12-31 2020-05-08 天长市中德电子有限公司 一种高磁导率低损耗锰锌软磁铁氧体材料及其制备方法
CN111116191B (zh) * 2019-12-31 2022-02-15 天长市中德电子有限公司 一种高磁导率低损耗锰锌软磁铁氧体材料及其制备方法
CN116490467A (zh) * 2020-10-20 2023-07-25 株式会社东金 MnZn系铁氧体
CN112456994A (zh) * 2020-11-27 2021-03-09 天通控股股份有限公司 一种低温烧结高频低损耗MnZn软磁铁氧体及其制备方法
CN112979299A (zh) * 2021-02-19 2021-06-18 成都灏众科技有限公司 一种功率型低温烧结铁氧体材料及其制备方法
CN112979299B (zh) * 2021-02-19 2022-08-05 成都灏众科技有限公司 一种功率型低温烧结铁氧体材料及其制备方法
CN112851327A (zh) * 2021-02-24 2021-05-28 同济大学 低损耗的钽-硅复合掺杂锰锌铁氧体材料及其制备方法
CN112979300A (zh) * 2021-02-24 2021-06-18 同济大学 一种高频低损耗的钽掺杂锰锌铁氧体材料及其制备方法
CN113135749A (zh) * 2021-04-21 2021-07-20 湖北华磁电子科技有限公司 宽温高效软磁铁氧体材料及材料的制备方法
CN113185276A (zh) * 2021-05-13 2021-07-30 湖北华磁电子科技有限公司 常温高标软磁铁氧体材料及材料的制备方法
WO2023045074A1 (zh) * 2021-09-24 2023-03-30 天通控股股份有限公司 一种超高频高磁导率低损耗锰锌软磁铁氧体及制备方法
WO2023093123A1 (zh) 2021-11-26 2023-06-01 横店集团东磁股份有限公司 一种宽温低损耗高强度MnZn功率铁氧体及其制备方法与应用
CN114477988A (zh) * 2022-03-28 2022-05-13 天通控股股份有限公司 一种易成型、高强度铁氧体材料及其制备方法
CN114685154A (zh) * 2022-04-27 2022-07-01 湖北华磁电子科技有限公司 一种高频宽温超低损耗铁氧体材料及其制备工艺
CN115286376A (zh) * 2022-07-01 2022-11-04 信丰天科磁业有限公司 一种掺杂型锰锌软磁铁氧体磁芯及其制造方法
CN115724656A (zh) * 2022-11-14 2023-03-03 陕西煤业化工技术研究院有限责任公司 一种锰锌功率铁氧体材料及其制备方法、开关电源变压器
CN115724656B (zh) * 2022-11-14 2023-10-20 陕西煤业化工技术研究院有限责任公司 一种锰锌功率铁氧体材料及其制备方法、开关电源变压器
CN116217215A (zh) * 2023-03-17 2023-06-06 无锡斯贝尔磁性材料有限公司 一种高频低功耗JF51W MnZn铁氧体材料
CN117902891A (zh) * 2024-03-15 2024-04-19 天通控股股份有限公司 一种单畴结构高频高工作磁密锰锌软磁铁氧体及制备方法
CN117902891B (zh) * 2024-03-15 2024-05-28 天通控股股份有限公司 一种单畴结构高频高工作磁密锰锌软磁铁氧体及制备方法

Also Published As

Publication number Publication date
CN107129291B (zh) 2018-05-01

Similar Documents

Publication Publication Date Title
CN107129291B (zh) 具有高频低温度系数低损耗MnZn软磁铁氧体材料及其制备方法
CN107311637B (zh) 一种基于核壳结构晶粒制备低功率损耗锰锌铁氧体的方法
CN107555984A (zh) 一种高频宽温低损耗MnZn铁氧体的烧结过程气氛控制方法
CN107352992A (zh) 一种宽频宽温低损耗锰锌铁氧体的粉末粒度控制方法
CN106587977B (zh) 一种功率型镍锌铁氧体材料及其制备方法
CN107778001A (zh) 一种生成纳米晶界高电阻率膜降低镍锌铁氧体功率损耗的方法
CN101859621B (zh) 一种高磁导率MnZn铁氧体材料及其制造方法
CN108424136B (zh) MHz级开关电源用MnZn功率铁氧体及其制备方法
KR100439782B1 (ko) 1MHz와100MHz사이에서작동하는저상실페라이트및그제조방법
CN104402424B (zh) 高饱和磁通密度、高直流叠加、高居里温度的镍锌铁氧体材料及其制备方法
CN103664154B (zh) 高频高电阻率Li-Ti-Zn软磁铁氧体材料配方及工艺
CN107352993A (zh) 一种高频锰锌软磁铁氧体材料及其制备方法
CN104098326A (zh) 低温度系数高阻抗高磁导率锰锌铁氧体材料及制备方法
CN104392819A (zh) 一种复合软磁材料及其制备方法
CN103102148A (zh) 宽频高磁导率锰-锌铁氧体材料的制备方法
CN106542818A (zh) 一种高频低损耗锰锌铁氧体材料及制备工艺
CN109103010B (zh) 一种提高磁粉芯绝缘层致密度的材料及其方法
CN105993053A (zh) 复合软磁材料及其制备方法
CN104409189B (zh) 复合软磁材料及其制备方法
CN113223844B (zh) 一种粉末包覆方法
CN107129292B (zh) 一种制备高性能MnZn铁氧体的离子联合替代方法
CN104129980A (zh) 一种低烧结温度软磁铁氧体材料及其制备方法
CN110981460A (zh) 一种高磁导率铁氧体磁性材料的制备方法
CN104867641B (zh) 高频变压器用高电感值高磁导率铁氧体磁芯
CN109095915A (zh) 制备高性能MnZn铁氧体的In(Cd,Ga)、Ni、Ti、Co离子联合替代方法

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
CB03 Change of inventor or designer information

Inventor after: Yan Mi

Inventor after: Huo Huaxin

Inventor after: Jin Jiaying

Inventor after: Bai Guohua

Inventor after: Bao Daxin

Inventor before: Yan Mi

Inventor before: Huo Huaxin

Inventor before: Bai Guohua

Inventor before: Bao Daxin

CB03 Change of inventor or designer information
GR01 Patent grant
GR01 Patent grant