WO2010117156A2 - Procédé de fabrication de ferrite de type y, et ferrite de type y ainsi fabriquée - Google Patents

Procédé de fabrication de ferrite de type y, et ferrite de type y ainsi fabriquée Download PDF

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Publication number
WO2010117156A2
WO2010117156A2 PCT/KR2010/001864 KR2010001864W WO2010117156A2 WO 2010117156 A2 WO2010117156 A2 WO 2010117156A2 KR 2010001864 W KR2010001864 W KR 2010001864W WO 2010117156 A2 WO2010117156 A2 WO 2010117156A2
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type ferrite
heat treatment
compound
manufacturing
barium
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PCT/KR2010/001864
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English (en)
Korean (ko)
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WO2010117156A3 (fr
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유병훈
성원모
금준식
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주식회사 이엠따블유
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Publication of WO2010117156A2 publication Critical patent/WO2010117156A2/fr
Publication of WO2010117156A3 publication Critical patent/WO2010117156A3/fr

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/0018—Mixed oxides or hydroxides
    • 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
    • H01F1/348—Hexaferrites with decreased hardness or anisotropy, i.e. with increased permeability in the microwave (GHz) range, e.g. having a hexagonal crystallographic structure

Definitions

  • the present invention relates to a method for producing a wire type ferrite and a wire type ferrite produced thereby. More particularly, the present invention relates to a method for producing a wire type ferrite having a low dielectric constant and a high permeability, a low dielectric loss value and a low permeability loss value, and a wire type ferrite manufactured thereby.
  • Ferrite is a solid solution in which alloying elements or impurities are dissolved in iron of a body-centered cubic crystal which is stable at 900 ° C. or lower.
  • ferrite is a metallographic term for steel, which is also called silicon ferrite or silicon iron by the name of solid solution or dissolved element based on ⁇ iron.
  • Such a ferrite is a single phase when viewed under a microscope.
  • the ferrite has a characteristic of mixing a white portion of ferrite with a slightly dissolved carbon and a black portion of perlite, and is used for magnetic heads such as high frequency transformers, pickups, and tape recorders.
  • Y-type ferrite which is a kind of hexagonal ferrite, is a material for high frequency devices that can be used from several hundred MHz to several GHz, and has a dielectric constant of 8 to 10 and a permeability of 2 to 3. .
  • the efficiency of the high-frequency device (for example, the antenna, etc.) using the w-type ferrite can be improved.
  • the wire type ferrite having a high permittivity while having a low permittivity, low dielectric loss and low investment loss was produced.
  • the conventional method for manufacturing a w-type ferrite in which a part of the initial raw material is replaced or an additive is added to the initial raw material is a wire type as the additional troublesome or additive to perform a part of the initial raw material needs to be performed. There is a problem that the manufacturing cost of ferrite increases.
  • an object of the present invention is to manufacture a wire type ferrite having low dielectric constant, high permeability and low loss value by controlling heat treatment temperature without replacing a part of the initial raw material or adding an additive in order to apply the electronic component material at high frequency.
  • the present invention provides a method and a wire type ferrite produced thereby.
  • the Y-type ferrite manufacturing method according to the present invention includes a heat treatment step of heat treatment one or more times.
  • the heat treatment step includes performing a first heat treatment at 300 ° C to 500 ° C and performing a second heat treatment at 1100 ° C to 1250 ° C.
  • Wye type ferrite manufacturing method before the heat treatment step, providing a raw material for producing a wire type ferrite, a mixing step of mixing the initial raw material, a first made by mixing the initial raw material A coprecipitation step of coprecipitating the mixed solution and a drying step of washing filtration and drying of the coprecipitated material.
  • the initial raw material includes a barium (Ba) compound, a cobalt (Co) compound and an iron (Fe) compound, wherein the barium compound is any one of barium chloride, barium nitrate and barium sulfide, and the cobalt compound is cobalt chloride, Cobalt nitrate, and cobalt sulfide, and the iron compound is any one of iron chloride, iron nitrate, and iron sulfide.
  • the providing step includes providing the barium compound, the nitric acid compound and the iron compound in a molar ratio of 1.7 to 2.3: 1.7 to 2.3: 10 to 14.
  • the coprecipitation step includes a step of coprecipitation by adding a second mixed solution of sodium hydroxide (NaOH) and hydrogen peroxide (H 2 O 2 ) water to the first mixed solution.
  • NaOH sodium hydroxide
  • H 2 O 2 hydrogen peroxide
  • the wire-type ferrite according to the invention is characterized in that it is produced by the above production method.
  • a wire type ferrite having low dielectric constant, high permeability, low dielectric loss and low permeability loss can be manufactured by controlling only the heat treatment temperature without replacing a part of the initial raw material or adding an additive. have. Therefore, it can be applied as a device for high frequency (3 GHz or less), and the manufacturing process of the wire type ferrite is not only simplified, and the manufacturing cost of the wire type ferrite can be reduced.
  • FIG. 1 is a flow chart showing a manufacturing process of the w-type ferrite in accordance with an embodiment of the present invention
  • FIG. 2 is a diagram showing antenna efficiency for each loss in the case of permittivity 4 and permeability 2.
  • FIG. 1 is a flow chart showing a manufacturing method of the w-type ferrite according to the present invention.
  • the w-type ferrite is a hexagonal soft ferrite generally represented by a chemical formula of Ba 2 Co 2 Fe 12 O 22 , and is excellent in high frequency characteristics such that the permeability hardly decreases to a frequency range of 10 Hz or more.
  • An initial raw material for producing such a type ferrite includes a barium (Ba) compound, cobalt (Co) compound and iron (Fe) compound, the barium compound is any one of barium chloride, barium nitrate and barium sulfide,
  • the cobalt compound is any one of cobalt chloride, cobalt nitrate and cobalt sulfide, and the iron compound is any of iron chloride, iron nitrate and iron sulfide.
  • barium may be replaced with strontium (Sr)
  • cobalt may be replaced with any one of nickel (Ni), manganese (Mn), zinc (Zn), magnesium (Mg), and copper (Cu).
  • the barium compound is limited to barium nitrate (Ba (No 3 ) 2 ) and the cobalt compound is cobalt nitrate hexahydrate (Co (No 3 ) 2 .6H 2 O), which is a cobalt nitrate.
  • the iron compound is limited to ferric nitrate hexahydrate (Fe (No 3 ) 3 .9H 2 0), which is an iron nitrate.
  • the present invention is not limited thereto.
  • the method for producing the w-type ferrite of the present invention includes barium nitrate ⁇ barium nitrate (Ba (No 3 ) 2 ) ⁇ , cobalt nitrate ⁇ cobalt nitrate hexahydrate (Co (No 3 ) 2 ⁇ 6H) which is an initial raw material. 2 O) ⁇ and iron nitrate ⁇ ferric nitrate hexahydrate (Fe (No 3 ) 3 ⁇ 9H 2 0) ⁇ , dissolving and mixing the initial raw material, coprecipitation of the mixed solution made by mixing the initial raw material Washing, filtering and drying the co-precipitated material and heat treating the dried material one or more times.
  • the coprecipitation method is a method of precipitating the target ion in the mixed solution by adding a precipitant (solution) containing other ions to the mixed solution to precipitate the target ion and the other ions together. ), And the initial raw material is co-precipitated using a precipitant mixed with hydrogen peroxide (H 2 O 2 ) dissolved in water.
  • a precipitant solution
  • hydrogen peroxide H 2 O 2
  • barium nitrate, cobalt nitrate hexahydrate and ferric nitrate hexahydrate are provided (S110).
  • barium nitrate, cobalt nitrate hexahydrate and ferric nitrate hexahydrate i.e., barium compound, nitrate compound and iron compound in a molar ratio of 2: 2: 12.
  • the precipitant is preferably a sodium hydroxide-hydrogen peroxide mixed solution in which a sodium peroxide solution of 1 to 4 times the stoichiometric amount capable of oxidizing 2 to 4 equivalents of sodium hydroxide and iron divalent ions.
  • the material precipitated through the step S130 that is, by adding a precipitant to the mixed solution to wash and filter the coprecipitated metal hydroxide (S140).
  • This dried metal hydroxide is first heat-treated at a temperature of 300 °C to 500 °C (S150).
  • a primary heat processing temperature is 400 degreeC.
  • the first heat-treated metal hydroxide is second heat treatment at a temperature of 1100 °C to 1250 °C (S160).
  • secondary heat processing temperature is 1200 degreeC.
  • barium nitrate, cobalt nitrate hexahydrate and ferric nitrate hexahydrate are synthesized as a w-type ferrite.
  • the first type of heat treatment may be performed on a metal hydroxide at a temperature of 300 ° C. to 500 ° C., and a second heat treatment at a temperature of 1100 ° C. to 1250 ° C. to manufacture a wire type ferrite. have.
  • Table 1 Secondary heat treatment condition (when primary heat treatment condition is 400 °C) permittivity Dielectric loss Permeability Investment loss 1 GHz 2.4 GHz 1 GHz 2.4 GHz 1 GHz 2.4 GHz 1 GHz 2.4 GHz 800 °C 3.2 3.2 0.012 0.007 1.1 1.1 0.01 0.01 1000 °C 4.6 4.6 0.004 0.001 1.3 1.3 0.02 0.05 1200 °C 4.2 4.2 0.002 0.001 2.0 1.9 0.05 0.16 1250 °C 4.0 4.0 0.001 0.001 1.9 1.8 0.07 0.17 1300 °C 4.5 4.5 0.021 0.034 1.9 1.4 0.23 0.39
  • Table 1 is a table showing the dielectric constant, dielectric loss, permeability and investment loss according to the secondary heat treatment temperature when the primary heat treatment temperature is fixed to about 400 °C.
  • the high permeability appears when the secondary heat treatment temperature is about 1200 °C, and when the temperature is raised above, the permeability does not increase, but the dielectric constant, dielectric loss value, and permeation loss value increase. Therefore, it can be seen that the material having a high permeability, low permittivity, low dielectric loss value, and low permeability loss value can be developed by setting the secondary heat treatment temperature at about 1200 ° C. under the conditions of Table 1. Specifically, it is possible to develop a material having a high permeability of 2 or more, a low permittivity of 5 or less, a low dielectric loss value of 0.01 or less, and a low permeability loss value of 0.16 or less.
  • Table 4 Primary heat treatment condition (when secondary heat treatment condition is 1200 °C) permittivity Dielectric loss Permeability Investment loss 1 GHz 2.4 GHz 1 GHz 2.4 GHz 1 GHz 2.4 GHz 1 GHz 2.4 GHz 400 °C 4.2 4.2 0.002 0.001 2.0 1.9 0.05 0.16 800 °C 7.0 7.0 0.008 0.001 2.5 2.3 0.21 0.56 1000 °C 9.8 8.8 0.005 0.001 2.1 2.0 0.14 0.21
  • the secondary heat treatment temperature is fixed to about 1200 °C as shown in Table 4, when the primary heat treatment temperature is about 400 °C high permeability of 2 or more, low dielectric constant of 5 or less, low dielectric loss value of 0.01 or less and 0.16 It can be seen that the w-type ferrite having a low investment loss value as follows can be produced.
  • the first heat treatment temperature is 300 ° C to 500 ° C (preferably 400 ° C) and the second heat treatment temperature is 1100 ° C to 1250 ° C (preferably 1200 ° C), It will be able to manufacture the type of ferrite.
  • FIG. 2 is a table showing the operating gains of the antennas for the dielectric loss and the investment loss when a carrier having a permittivity of 4 and a permeability of 2 is applied to an antenna system having an operating frequency of 2.35 GHz.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Magnetic Ceramics (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

La présente invention concerne un procédé de fabrication de ferrite de type Y et une ferrite de type Y ainsi fabriquée. Le procédé de fabrication de ferrite de type Y d'après la présente invention comprend une étape de traitement thermique mise en œuvre au moins une fois, ladite étape de traitement thermique comprenant une étape de traitement thermique primaire mise en œuvre à une température de 300 °C à 500 °C et une étape de traitement thermique secondaire mise en œuvre à une température de 1100 °C à 1250 °C. Le procédé de la présente invention permet de fabriquer une ferrite de type Y ayant une permittivité basse, une perméabilité magnétique élevée, une faible perte diélectrique et une faible perte de perméation simplement en régulant la température du traitement thermique, sans remplacer une partie des matériaux initiaux ni utiliser d'additif. Par conséquent, la ferrite de type Y de la présente invention s'utilise comme un élément destiné à des dispositifs à haute fréquence (3 GHz ou moins), les procédés de fabrication de la ferrite de type Y peuvent être simplifiés et les coûts de fabrication de la ferrite de type Y peuvent être réduits.
PCT/KR2010/001864 2009-04-06 2010-03-26 Procédé de fabrication de ferrite de type y, et ferrite de type y ainsi fabriquée WO2010117156A2 (fr)

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KR1020090029204A KR101161625B1 (ko) 2009-04-06 2009-04-06 와이 타입 페라이트 제조 방법 및 이에 의해 제조된 와이 타입 페라이트
KR10-2009-0029204 2009-04-06

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011081399A2 (fr) * 2009-12-29 2011-07-07 주식회사 이엠따블유 Procédé de production de ferrite de type y et ferrite de type y obtenue par ce procédé
EP3046121A1 (fr) * 2014-10-24 2016-07-20 Skyworks Solutions, Inc. Ferrite hexagonale à phase y dopée aux alcalins de fréquence de résonance accrue
US11069983B2 (en) 2014-09-30 2021-07-20 Skyworks Solutions, Inc. Modified Z-type hexagonal ferrite materials with enhanced resonant frequency
CN113213907A (zh) * 2021-06-24 2021-08-06 横店集团东磁股份有限公司 一种复合铁氧体材料及其制备方法和应用

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101383129B1 (ko) * 2012-10-25 2014-04-09 고등기술연구원연구조합 폐 ｌｃｄ 글래스를 이용한 고주파용 자성체 및 그 제조 방법
KR102079734B1 (ko) 2017-01-26 2020-02-20 주식회사 엘지화학 산화적 탈수소화 반응용 페라이트 촉매, 이의 제조방법 및 이를 이용한 부타디엔의 제조방법
WO2018139776A1 (fr) * 2017-01-26 2018-08-02 (주) 엘지화학 Catalyseur de ferrite pour réaction de déshydrogénation oxydative, son procédé de préparation et procédé de préparation de butadiène en utilisant celui-ci

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US5750045A (en) * 1994-07-08 1998-05-12 Tdk Corporation Preparation of ferrite materials
US6669861B2 (en) * 2000-09-01 2003-12-30 Murata Manufacturing Co. Ltd Y-type hexagonal oxide magnetic material and inductor element
KR20060106686A (ko) * 2005-03-31 2006-10-12 히타치 긴조쿠 가부시키가이샤 페라이트 소결체 및 그 제조 방법

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US5750045A (en) * 1994-07-08 1998-05-12 Tdk Corporation Preparation of ferrite materials
US6669861B2 (en) * 2000-09-01 2003-12-30 Murata Manufacturing Co. Ltd Y-type hexagonal oxide magnetic material and inductor element
KR20060106686A (ko) * 2005-03-31 2006-10-12 히타치 긴조쿠 가부시키가이샤 페라이트 소결체 및 그 제조 방법

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011081399A2 (fr) * 2009-12-29 2011-07-07 주식회사 이엠따블유 Procédé de production de ferrite de type y et ferrite de type y obtenue par ce procédé
WO2011081399A3 (fr) * 2009-12-29 2011-11-10 주식회사 이엠따블유 Procédé de production de ferrite de type y et ferrite de type y obtenue par ce procédé
US11069983B2 (en) 2014-09-30 2021-07-20 Skyworks Solutions, Inc. Modified Z-type hexagonal ferrite materials with enhanced resonant frequency
US10984928B2 (en) 2014-10-24 2021-04-20 Skyworks Solutions, Inc. Magnetodielectric y-phase strontium hexagonal ferrite materials formed by sodium substitution
EP3046121A1 (fr) * 2014-10-24 2016-07-20 Skyworks Solutions, Inc. Ferrite hexagonale à phase y dopée aux alcalins de fréquence de résonance accrue
US10049796B2 (en) 2014-10-24 2018-08-14 Skyworks Solutions, Inc. Magnetodielectric Y-phase strontium hexagonal ferrite materials formed by sodium substitution
US10276287B2 (en) 2014-10-24 2019-04-30 Skyworks Solutions, Inc. Incorporation of oxides into ferrite material for improved radio radiofrequency properties
US10971288B2 (en) 2014-10-24 2021-04-06 Skyworks Solutions, Inc. Incorporation of oxides into ferrite material for improved radio radiofrequency properties
US10026530B2 (en) 2014-10-24 2018-07-17 Skyworks Solutions, Inc. Increased resonant frequency potassium-doped hexagonal ferrite
US11004581B2 (en) 2014-10-24 2021-05-11 Skyworks Solutions, Inc. Increased resonant frequency alkali-doped Y-phase hexagonal ferrites
US10032547B2 (en) 2014-10-24 2018-07-24 Skyworks Solutions, Inc. Increased resonant frequency alkali-doped Y-phase hexagonal ferrites
US11869689B2 (en) 2014-10-24 2024-01-09 Skyworks Solutions, Inc. Incorporation of oxides into ferrite material for improved radio radiofrequency properties
US11164689B2 (en) 2014-10-24 2021-11-02 Skyworks Solutions, Inc. Increased resonant frequency potassium-doped hexagonal ferrite
US11551837B2 (en) 2014-10-24 2023-01-10 Skyworks Solutions, Inc. Magnetodielectric Y-phase strontium hexagonal ferrite materials formed by sodium substitution
US11742118B2 (en) 2014-10-24 2023-08-29 Skyworks Solutions, Inc. Increased resonant frequency alkali-doped Y-phase hexagonal ferrites
US11776718B2 (en) 2014-10-24 2023-10-03 Skyworks Solutions, Inc. Increased resonant frequency potassium-doped hexagonal ferrite
CN113213907A (zh) * 2021-06-24 2021-08-06 横店集团东磁股份有限公司 一种复合铁氧体材料及其制备方法和应用

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KR101161625B1 (ko) 2012-07-04
KR20100110929A (ko) 2010-10-14
WO2010117156A3 (fr) 2010-12-16

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