JPS63222018A - Ferrite composition - Google Patents
Ferrite compositionInfo
- Publication number
- JPS63222018A JPS63222018A JP62053298A JP5329887A JPS63222018A JP S63222018 A JPS63222018 A JP S63222018A JP 62053298 A JP62053298 A JP 62053298A JP 5329887 A JP5329887 A JP 5329887A JP S63222018 A JPS63222018 A JP S63222018A
- Authority
- JP
- Japan
- Prior art keywords
- component
- weight
- ferrite
- parts
- composition
- 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
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 22
- 239000000203 mixture Substances 0.000 title claims abstract description 16
- 239000000654 additive Substances 0.000 claims description 24
- 230000000996 additive effect Effects 0.000 claims description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 5
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 4
- 238000001354 calcination Methods 0.000 abstract description 3
- 229910000108 silver(I,III) oxide Inorganic materials 0.000 abstract description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N CuO Inorganic materials [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 abstract description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052681 coesite Inorganic materials 0.000 abstract description 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 2
- 229910052682 stishovite Inorganic materials 0.000 abstract description 2
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052905 tridymite Inorganic materials 0.000 abstract description 2
- 238000007796 conventional method Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 238000010304 firing Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 230000035699 permeability Effects 0.000 description 7
- 239000002994 raw material Substances 0.000 description 6
- 238000005245 sintering Methods 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 239000005751 Copper oxide Substances 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
- Magnetic Ceramics (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、２Ｏ〜５００ｋＨｚ高周波帯域のトランスの
磁心等を製作するためのフェライト組成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a ferrite composition for manufacturing a magnetic core of a transformer in a high frequency band of 20 to 500 kHz.
［従来の技術］
従来の代表的なＭｎ−Ｚｎ系フエライＩ−材料は、ｐ
ｅ ２Ｏ３（酸化！＞、Ｍｎ０（酸化マンガン）、Ｚｎ
０（酸化亜鉛）から成る主成分と、Ｃａ０（酸化力ルシ
ュウム璽５１０４ （二酸化けい素）、Ｖ２Ｏ５（酸
化バナジュウム）等からなる添加成分とから成る。[Prior art] A typical conventional Mn-Zn-based Ferrite I material is p
e 2O3 (oxidation!>, Mn0 (manganese oxide), Zn
It consists of a main component consisting of 0 (zinc oxide) and additional components such as Ca0 (oxidizing power 5104 (silicon dioxide)) and V2O5 (vanadium oxide).
［発明が解決しようとする問題点］
ところで、上述の如き組成のフェライトは、１２５０°
Ｃ〜１３５０℃の高温で焼成しなければならず、必然的
に焼成コスＩ・が高くなった。[Problems to be Solved by the Invention] By the way, ferrite having the above composition has a 1250°
It had to be fired at a high temperature of C to 1350°C, which inevitably resulted in a high firing cost I.
そこで、本発明の目的は、従来よりも低温で焼結される
フェライト組成物を提供することにある。Therefore, an object of the present invention is to provide a ferrite composition that can be sintered at a lower temperature than conventional ones.
［問題点を解決ため手段］
上記問題点を解決し、−上記目的を達成するための本発
明は、Ｆｅ ２Ｏ３ 、ＭｎＯ，Ｚｎｏから成るフェラ
イト組成物と、Ｃａｏ、Ｓｉｏ２、Ｖ２Ｏ５の内の少な
くとも１種を含む第１の添加成分と、Ｔａ Ｏ，５ｎ
０２ 、Ｃ１，、ＩＯの内の少なくとも１種から成る第
２の添加成分と、Ｎ ａ ２Ｏ、Ａｇ２Ｏの内の少なく
とも１種から成る第３の添加成分とから成り、前記第２
の添加成分か前記主成分１００重量部に対して０．００
５〜０．４重量部とされ、前記第３の添加成分が前記主
成分１００重量部に対して０．００５〜０．２重量部と
されているフェライ１へ組成物に係わるものである。[Means for Solving the Problems] The present invention for solving the above problems and achieving the above objects includes a ferrite composition consisting of Fe2O3, MnO, and Zno, and at least one of Cao, Sio2, and V2O5. A first additive component containing seeds and Ta O,5n
02, C1,, IO, and a third additive component consisting of at least one of Na2O and Ag2O.
0.00 parts by weight of the added component or 100 parts by weight of the main component
5 to 0.4 parts by weight, and the third additive component is in an amount of 0.005 to 0.2 parts by weight based on 100 parts by weight of the main component.
「作用」
」１記発明の第２及び第３の添加成分は、焼成温度を低
下させることに寄与し、１１５０℃程度での焼結が可能
になる。"Function" The second and third additive components of the invention described in item 1 contribute to lowering the sintering temperature, making it possible to sinter at about 1150°C.
［実施例１］
次に、本発明の詳細な説明する。主成分として、Ｆｅ２
Ｏ３５Ｂ、０モル％、ＭｎＯ３５゜５モル％、ＺｎＯ１
１，５モル％で１００モル％となるものを１． Ｏ０重
量部用意しな。[Example 1] Next, the present invention will be explained in detail. As the main component, Fe2
O35B, 0 mol%, MnO35゜5 mol%, ZnO1
1.5 mole% becomes 100 mole%. Prepare O0 parts by weight.
第１の添加成分としてＣａ ＣＯ３をＣａＯに換算しテ
０．１重量部、Ｓ １０２を０．００５重量部、Ｖ２Ｏ
！５を０．１重量部用意した。この第１の添加成分の各
酸化物の量は、主成分を１００重量部にした場合を示す
。As the first additive component, CaCO3 is converted to CaO and 0.1 part by weight, S102 is 0.005 part by weight, and V2O.
! 0.1 part by weight of 5 was prepared. The amount of each oxide in the first additive component is based on 100 parts by weight of the main component.
第２の添加成分としてＴａ２ｏ５ （酸化タンタル）を
０．１重量部、Ｓ ｎ Ｏ２（酸化スズ）を０．１重量
部用意しな。Prepare 0.1 part by weight of Ta2o5 (tantalum oxide) and 0.1 part by weight of SnO2 (tin oxide) as second additive components.
第３の添加成分としてＮａ２ＣＯ３をＮａ２゜（酸化す
Ｉ・リュウム）に換算して０．００５重量部、Ａ ｇ
２Ｏ （酸化銀）を０．０５重量部用意した。なお、第
２及び第３の添加成分の重量部も主成分１００重量部に
対する割合を示す。The third additive component is 0.005 parts by weight of Na2CO3 converted to Na2° (I oxidized rhium), A g
0.05 part by weight of 2O (silver oxide) was prepared. Note that the parts by weight of the second and third additive components also indicate the proportions relative to 100 parts by weight of the main component.
次に、上記主成分、第１〜第３の添加成分をボールミル
で５時間混合しな。Next, the main component and the first to third additional components were mixed in a ball mill for 5 hours.
次に、得られた原料混合粉末を９００℃、２時間仮焼し
な。後に、再びホールミルで５時間微粉砕しな。Next, the obtained raw material mixed powder was calcined at 900°C for 2 hours. Afterwards, pulverize again in a whole mill for 5 hours.
次に、仮焼後の原料粉末に、有機バインターとしてＰＶ
Ａを５重基％添加混合し、造粒して、油圧プレスで１．
５ ｔｏｎ ／ｃｘＡの圧力で外径２２ｍｍ、内径１６
關、厚さ５ ｍｍのリング形状にプレス成型した。Next, PV is added to the raw material powder after calcination as an organic binder.
5% of A is added and mixed, granulated, and 1.
5 ton/cxA pressure, outer diameter 22mm, inner diameter 16
Then, it was press-molded into a ring shape with a thickness of 5 mm.
次に、得られた成型体を１１５０’Ｃで２時間焼成して
焼結体試料を得た。Next, the obtained molded body was fired at 1150'C for 2 hours to obtain a sintered body sample.
得られた試料の初透磁率μＩを測定しなところ２Ｏ１０
であった。また、試料のうず電流損、ヒステリシス損、
残留損等を合せた全損失を測定したところ、１９８ＩＩ
ＩＷ／Ｃ■３ であつな。この実施例１から明らかな
如く、１１５０℃の焼成で実用可能な特性を有するフェ
ライトを提供することができる。The initial magnetic permeability μI of the obtained sample was measured at 2O10.
Met. In addition, sample eddy current loss, hysteresis loss,
When we measured the total loss including residual loss, we found that 198II
IW/C■3 Atsuna. As is clear from this Example 1, ferrite having practically usable characteristics can be provided by firing at 1150°C.
［実施例２］
成形体の焼成温度を１２Ｏ０℃に変えた他は実施例１と
同一な組成及び方法でフェライト試料を作り、特性を測
定したところ、透磁率μｉは２Ｏ３０、損失は２３０
Ｉｎｋ／ Ｃ１１ｌ” テアツｒ、６゜［実施例３］
成形体の焼成温度を１２５０°Ｃに変えた他は、実施例
１と同一な組成及び方法でフェライト試料を作り、特性
を測定しなところ、透磁率μｉは２Ｏ５０、損失は２６
２ ＋１Ｗ／Ｃｌ１１” テあッた。[Example 2] A ferrite sample was made using the same composition and method as in Example 1 except that the firing temperature of the compact was changed to 12O0°C, and the properties were measured. The magnetic permeability μi was 2O30 and the loss was 230.
Ink/C11l" teats r, 6° [Example 3] A ferrite sample was made using the same composition and method as in Example 1, except that the firing temperature of the compact was changed to 1250°C, and the characteristics were not measured. , magnetic permeability μi is 2O50, loss is 26
2 +1W/Cl11” It was hot.
［比較例１］
成形体の焼成温度を１１００℃に変えた他は、実施例１
と同一な組成及び方法でフェライ試料を作ったところ、
焼結体を得ることができなかった。[Comparative Example 1] Same as Example 1 except that the firing temperature of the molded body was changed to 1100°C.
When a ferrite sample was made using the same composition and method as
A sintered body could not be obtained.
［比較例２］
実施例１における原料から第２及び第３の添加成分を除
いて、主成分と第１の添加成分のみを原料とした他は、
実施例１と同一の方法でフェライ試料を作ったところ、
焼結体を得られなかった。[Comparative Example 2] The second and third additive components were removed from the raw materials in Example 1, and only the main component and the first additive component were used as raw materials.
When a ferrite sample was made in the same manner as in Example 1,
A sintered body could not be obtained.
焼成温度を１２Ｏ０°Ｃに上げても焼結体を得られなか
った。焼成温度を１２５０℃に上げると、焼結体が得ら
れ、透磁率μｉは２Ｏ２Ｏ、損失は２４９ ｍｗ／ ｃ
ｒｎ３テあツタ。Even if the firing temperature was raised to 1200°C, no sintered body could be obtained. When the firing temperature is increased to 1250 °C, a sintered body is obtained, with a magnetic permeability μi of 2O2O and a loss of 249 mw/c.
rn3 Te Atsuta.
［実施例４］
主成分としてＦｅ２ｏ３が５２．５モル％と、ＭｎＯが
３２．０モル％と、ＺｎＯが１５．５モル％とで１００
モル％になるものを用意し、第１の添加成分としてＣａ
ＣＯ３をＣａＯに換算して０．０１重量部、ＳｉＯを
０．００８重量部、Ｖ ２Ｏ５を０．２重量部用意し、
第２の添加成分としてＴａ２Ｏ５を０．０５重量部、５
ｎ０２を０．２重量部、ＣＵ○（酸化銅）を０．１重量
部用意し、第３の添加成分としてＮａ Ｃｏ をＮ
ａ ２Ｏに換算して０゜０５重量部、Ａｇ２Ｏを０．
０５重量部用意し、原料を上記主成分及び上記第１〜第
３の添加成分に変えた他は実施例１と同じ方法でフェラ
イト試料を作り、同じ方法で特性を測定したところ、透
磁率μｍは３４４０、損失は１９３１１１Ｗ／Ｃ１１３
テあった。[Example 4] The main components were 52.5 mol% Fe2O3, 32.0 mol% MnO, and 15.5 mol% ZnO.
% by mole is prepared, and Ca is added as the first additive component.
Prepare 0.01 part by weight of CO3 in terms of CaO, 0.008 part by weight of SiO, and 0.2 part by weight of V2O5,
0.05 parts by weight of Ta2O5 as the second additive component, 5
Prepare 0.2 parts by weight of n02 and 0.1 parts by weight of CU○ (copper oxide), and add Na Co to N as the third additive component.
a 0.05 parts by weight in terms of 2O, 0.05 parts by weight of Ag2O.
A ferrite sample was prepared in the same manner as in Example 1 except that the raw materials were changed to the above-mentioned main component and the above-mentioned first to third additive components, and the characteristics were measured in the same manner. is 3440, loss is 193111W/C113
There was a time.
［実施例５］
成形体の焼成温度を１２Ｏ０°Ｃに変えた他は、実施例
４と同−組成及び方法でフェライト試料を作り、同一方
法で特性を測定しなところ、透磁率μｉは３５００、損
失は２２２ ｍｗ／ｃｍ３テあツタ。[Example 5] A ferrite sample was made using the same composition and method as in Example 4, except that the firing temperature of the compact was changed to 1200°C, and the properties were measured using the same method. The magnetic permeability μi was 3500. , the loss was 222 mw/cm3.
［実施例６］
成形体の焼成温度を１２５０°Ｃに変えた他は、実施例
４と同−組成及び方法でフェライト試料を作り、同一の
方法で特性を測定したところ、透磁率μｉは３５６０、
損失は２５ｚ１ｗ／ｃ川３であった。［比較例３］
成形体の焼成温度を１１００°Ｃに変えた他は、実施例
４と同−組成及び方法でフェライト試料を作ったところ
、焼結体を得ることができなかった。[Example 6] A ferrite sample was made using the same composition and method as in Example 4, except that the firing temperature of the compact was changed to 1250°C, and the properties were measured using the same method. The magnetic permeability μi was 3560. ,
The loss was 25z1w/c river 3. [Comparative Example 3] A ferrite sample was prepared using the same composition and method as in Example 4, except that the firing temperature of the compact was changed to 1100°C, but no sintered body could be obtained.
［比較例４］
実施例４の原料から第２及び第３の添加成分を除き、実
施例４と同一の主成分と第１の添加成分とで成形体を作
り、実施例４と同じ方法で１１５０℃で焼成しなところ
、焼結体を得ることができなかっな。更に、焼成温度を
１２Ｏ０’Ｃに上げても焼結体を得ることができなかっ
な。焼成温度を１２５０℃に上げると焼結し、この試料
の透磁率μｍは３４３０であり、損失は２４１１１１Ｗ
／Ｃｒｒ１３テあっな。[Comparative Example 4] A molded body was made using the same main component and the first additive component as in Example 4, except that the second and third additive components were removed from the raw materials in Example 4, and the molded body was produced in the same manner as in Example 4. If it was not fired at 1150°C, it would not be possible to obtain a sintered body. Furthermore, even if the firing temperature was raised to 12O0'C, a sintered body could not be obtained. Sintering occurs when the firing temperature is increased to 1250℃, the magnetic permeability μm of this sample is 3430, and the loss is 241111W.
/Crr13 Oh yeah.
「実施例７］
実施例４において、第２の添加成分の合計の重量部を０
．００５〜０．４の範囲で種々変化させ、第３の添加成
分の合計の重量部を０．００５〜０．２の範囲で種々変
化させてフェライト試料を作ったところ、１２５０°Ｃ
よりも低い温度で焼結しな。また、第１、第２及び第３
の添加成分の金属酸化物の種類を２種類又は１種類に減
らしても焼結温度を下げる効果が認められた。“Example 7” In Example 4, the total weight part of the second additive component was 0.
．． When ferrite samples were made by varying the temperature within the range of 0.005 to 0.4 and varying the total weight part of the third additive component within the range of 0.005 to 0.2, the temperature was 1250 °C.
Do not sinter at temperatures lower than . Also, the first, second and third
The effect of lowering the sintering temperature was observed even when the number of metal oxides added as additive components was reduced to two or one.
［発明の効果］
上述から明らかな如く、焼結温度の低いフェライＩ・組
成物を提供することができ、フェライトの焼成コストの
低減が可能になる。[Effects of the Invention] As is clear from the above, it is possible to provide a Ferrite I composition with a low sintering temperature, and it is possible to reduce the cost of sintering ferrite.
Claims (1)
成分と、 ＣａＯ、ＳｉＯ＿２、Ｖ＿２Ｏ＿５の内の少なくとも１
種を含む第１の添加成分と、 Ｔａ＿２Ｏ＿５、ＳｎＯ＿２、ＣｕＯの内の少なくとも
１種から成る第２の添加成分と、 Ｎａ＿２Ｏ、Ａｇ＿２Ｏの内の少なくとも１種から成る
第３の添加成分と から成り、前記第２の添加成分が前記主成分１００重量
部に対して０．００５〜０．４重量部とされ、前記第３
の添加成分が前記主成分１００重量部に対して０．００
５〜０．２重量部とされていることを特徴とするフェラ
イト組成物。[Claims] A ferrite main component consisting of Fe_2O_3, MnO, and ZnO, and at least one of CaO, SiO_2, and V_2O_5
Consisting of a first additive component containing a seed, a second additive component consisting of at least one of Ta_2O_5, SnO_2, and CuO, and a third additive component consisting of at least one of Na_2O and Ag_2O, The second additive component is 0.005 to 0.4 parts by weight based on 100 parts by weight of the main component, and the third
The added component is 0.00 parts by weight per 100 parts by weight of the main component.
A ferrite composition characterized in that the content thereof is 5 to 0.2 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62053298A JPS63222018A (en) | 1987-03-09 | 1987-03-09 | Ferrite composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62053298A JPS63222018A (en) | 1987-03-09 | 1987-03-09 | Ferrite composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63222018A true JPS63222018A (en) | 1988-09-14 |
Family
ID=12938815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62053298A Pending JPS63222018A (en) | 1987-03-09 | 1987-03-09 | Ferrite composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63222018A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02124724A (en) * | 1988-11-02 | 1990-05-14 | Taiyo Yuden Co Ltd | Mn-zn ferrite material |
| JPH05267037A (en) * | 1992-03-19 | 1993-10-15 | Taiyo Yuden Co Ltd | Laminated inductor and ferrite magnetic substance used for the same laminated inductor and manufacture thereof |
| US6627103B2 (en) | 2000-03-31 | 2003-09-30 | Tdk Corporation | Mn-Zn ferrite production process, Mn-Zn ferrite, and ferrite core for power supplies |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5845163A (en) * | 1981-09-10 | 1983-03-16 | 日立金属株式会社 | Oxide magnetic material |
| JPS61256967A (en) * | 1985-05-08 | 1986-11-14 | 住友特殊金属株式会社 | Manufacture of mn-zn ferrite |
-
1987
- 1987-03-09 JP JP62053298A patent/JPS63222018A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5845163A (en) * | 1981-09-10 | 1983-03-16 | 日立金属株式会社 | Oxide magnetic material |
| JPS61256967A (en) * | 1985-05-08 | 1986-11-14 | 住友特殊金属株式会社 | Manufacture of mn-zn ferrite |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02124724A (en) * | 1988-11-02 | 1990-05-14 | Taiyo Yuden Co Ltd | Mn-zn ferrite material |
| JPH05267037A (en) * | 1992-03-19 | 1993-10-15 | Taiyo Yuden Co Ltd | Laminated inductor and ferrite magnetic substance used for the same laminated inductor and manufacture thereof |
| US6627103B2 (en) | 2000-03-31 | 2003-09-30 | Tdk Corporation | Mn-Zn ferrite production process, Mn-Zn ferrite, and ferrite core for power supplies |
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