JPH01259508A - Oxide magnetic material - Google Patents
Oxide magnetic materialInfo
- Publication number
- JPH01259508A JPH01259508A JP63087368A JP8736888A JPH01259508A JP H01259508 A JPH01259508 A JP H01259508A JP 63087368 A JP63087368 A JP 63087368A JP 8736888 A JP8736888 A JP 8736888A JP H01259508 A JPH01259508 A JP H01259508A
- Authority
- JP
- Japan
- Prior art keywords
- oxide
- magnetic material
- mgo
- oxide magnetic
- cao
- 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
Links
- 239000000696 magnetic material Substances 0.000 title claims abstract description 31
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims abstract description 16
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 10
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 6
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000292 calcium oxide Substances 0.000 abstract description 10
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 5
- 239000011787 zinc oxide Substances 0.000 abstract description 5
- 238000001354 calcination Methods 0.000 abstract description 3
- 239000012298 atmosphere Substances 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 239000004615 ingredient Substances 0.000 abstract 3
- 238000005469 granulation Methods 0.000 abstract 1
- 230000003179 granulation Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- 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、高密度でかつ高耐摩耗性を有する、磁気ヘッ
ド材料に適した酸化物磁性材料に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an oxide magnetic material that has high density and high wear resistance and is suitable as a magnetic head material.
近年、ＯＡ（オフィスオートメーション）およびＨＡ（
ホームオートメーション）化の推進に伴い、オフィスコ
ンピュータおよびパーソナルコンピュータの普及はめざ
ましいものがある。これらのコンピュータの外部記憶８
置として必要不可欠なものにフロッピーディスク装置ｆ
ｆ （ＦＤＤ）及びハードディスクｌ１ｌ（ＨＤＤ＞が
ある。In recent years, OA (office automation) and HA (
With the advancement of home automation, the spread of office computers and personal computers has been remarkable. External storage of these computers8
A floppy disk device is an essential item for
f (FDD) and hard disk l1l (HDD>).
これらの装置に使用される磁気ヘッド用フェライトとし
て、超精密な加工を施すために、できるだけ欠陥のない
、かつ小粒径のものであること、また、ヘッドとして長
時間媒体と接触するために、できるだけ摩耗しにくい材
料であることが要求される。The ferrite for magnetic heads used in these devices must be as defect-free and small in size as possible in order to be processed with ultra-precision processing, and in order to be in contact with the medium for a long time as a head. It is required that the material be as wear-resistant as possible.
本発明の技術的課題は、ヘッド材料として要求されるこ
れらの条件を満足するよう、高密度でかつ高耐摩耗性を
有する酸化物磁性材料を提供するものである。A technical object of the present invention is to provide an oxide magnetic material having high density and high wear resistance so as to satisfy these conditions required for a head material.
本発明によれば、酸化マンガン（ＭｎＯ）２０〜４０モ
ル％、酸化亜鉛（ＺｎＯ）６〜３０％、残部が実質的に
酸化第二鉄（Ｆｅ２０３＞よりなる主成分と、副成分と
して酸化マグネシウム（Ｍｇｏ）を０．０１〜０．２１
ｆｆｉ％、酸化カルシウム（ＣａＯ）をＯ−０，２１量
％含有し、高密度で高耐摩耗性を有することを特徴とす
る酸化物磁性材料が得られる。According to the present invention, the main component consists of 20 to 40 mol% of manganese oxide (MnO), 6 to 30% of zinc oxide (ZnO), and the balance substantially consists of ferric oxide (Fe203), and magnesium oxide as a subcomponent. (Mgo) from 0.01 to 0.21
ffi%, calcium oxide (CaO) in an amount of O-0.21%, and is characterized by having high density and high wear resistance.
すなわち、本発明においては、主成分として酸化鉄原料
Ｆｅ２Ｏ３、酸化マンガンＭｎｏ、酸化亜鉛ｚｎＯを使
用し、これに副成分として酸化マグネシウムＭＣｌ０及
び酸化カルシウムＣａＯを添加し、これらの原料を通常
のフェライトの製造工程と同様にボールミルにて混合し
、仮焼、微粉砕、造粒してプレス用の粉末を得る。この
ようにして得られた粉末をブロック形状に成形し、これ
をＮ２雰囲気中で焼成する。この焼結体をさらにＡｒガ
ス中で熱間静水圧プレス＜１−１１Ｐ）処理を行ない、
後熱処理を施して、得られるものである。That is, in the present invention, iron oxide raw materials Fe2O3, manganese oxide Mno, and zinc oxide znO are used as main components, magnesium oxide MCl0 and calcium oxide CaO are added as subcomponents, and these raw materials are used as ordinary ferrite. Similar to the manufacturing process, the mixture is mixed in a ball mill, calcined, pulverized, and granulated to obtain a powder for pressing. The powder thus obtained is formed into a block shape, and this is fired in an N2 atmosphere. This sintered body is further subjected to hot isostatic pressing <1-11P) in Ar gas,
It is obtained by performing post-heat treatment.
その結果、製造された磁性材料はラップマスターにて１
μｍダイヤペーストを使用し一定時間研摩し、摩耗量を
判定した結果、従来の高密度フェライトに比較し、かな
り改善されていることが認められた。As a result, the produced magnetic material was heated to 1.
As a result of polishing using μm diamond paste for a certain period of time and determining the amount of wear, it was found that it was significantly improved compared to conventional high-density ferrite.
また、本発明において、添加ｌＭＣ７０に関しては０．
０１〜０．２重量％、ＣａＯに関しては０〜０．２重量
％と限定したのは、その量を変えると急激に透磁率の値
が劣化するためである。In addition, in the present invention, the added lMC70 is 0.
The reason why CaO is limited to 0 to 0.2% by weight is that if the amount is changed, the magnetic permeability value will deteriorate rapidly.
また、本発明の酸化物磁性材料の製造上はＨＩＰ処理の
圧力は８００〜１６００ｋＬ／ｃｎで製造されることが
好ましい。というのは、８００ｋｑ／ｄ以下の圧力では
十分なＨＩＰ効果が得られず、気孔が残存しやすく、高
密度が得られないためでアリ、マタ、１６００ｋ（１／
ｃｎｅ越エルト、ＨＩＰ時の歪が大きくなりすぎて、磁
性材料が劣化するからである。Further, in manufacturing the oxide magnetic material of the present invention, it is preferable that the HIP treatment is performed at a pressure of 800 to 1600 kL/cn. This is because a sufficient HIP effect cannot be obtained at a pressure below 800 kq/d, pores tend to remain, and high density cannot be obtained.
This is because the distortion during HIP becomes too large and the magnetic material deteriorates.
本発明の実施例について説明する。 Examples of the present invention will be described.
第１図は、本発明の実施例１〜３に係る酸化物磁性材料
の研摩量と時間との関係を示す。FIG. 1 shows the relationship between polishing amount and time of oxide magnetic materials according to Examples 1 to 3 of the present invention.
この図において、曲線１１は、実施例１に係る酸化物磁
性材料、曲線１２は実施例２に係る酸化物磁性材料、曲
線１３は実施例３に係る酸化物磁性材料、曲線５１は比
較の為に、実施例１と同じ材料で添加物を含有しない材
料を実施例１の方法により製造された酸化物磁性材料（
比較例１）についての研摩量と時間との関係をそれぞれ
示している。実施例１〜３の材料から切り出したたて５
ｍｅｎ、よこ５ ｒｕｍ Ｎ高さ３ｉｍの試片を１μｍ
のダイヤにて研磨し各時間ごとの摩耗量を測定したもの
である。In this figure, curve 11 is the oxide magnetic material according to Example 1, curve 12 is the oxide magnetic material according to Example 2, curve 13 is the oxide magnetic material according to Example 3, and curve 51 is for comparison. The same material as in Example 1 but containing no additives was used as an oxide magnetic material produced by the method in Example 1 (
The relationship between the amount of polishing and time for Comparative Example 1) is shown. Freshly cut from the materials of Examples 1 to 3 5
men, width 5 rum N height 3 mm specimen 1 μm
The amount of wear was measured at each time by polishing with a diamond.
このことから、本発明の実施例１〜３に係る酸化物磁性
材料は、既存フェライト材に比較して耐摩耗性に優れて
いることがわかった。From this, it was found that the oxide magnetic materials according to Examples 1 to 3 of the present invention had excellent wear resistance compared to existing ferrite materials.
第２図は、本発明の実施例４に係る酸化物磁性材料の研
磨量と時間との関係を示す。FIG. 2 shows the relationship between the polishing amount and time of the oxide magnetic material according to Example 4 of the present invention.
この図において、曲線２１は、実施例４に係る酸化物磁
性材料についての測定結果である。In this figure, a curve 21 is the measurement result for the oxide magnetic material according to Example 4.
比較例として、実施例４と同じ組成の材料（比較例２）
で、添加物については含有しない酸化物磁性材料の測定
結果を併記した。As a comparative example, a material with the same composition as Example 4 (Comparative Example 2)
The measurement results for oxide magnetic materials that do not contain additives are also shown.
この図から、本発明の実施例４に係る酸化物磁性材料は
、上記実施例１〜３に係る酸化物磁性材料と同様に耐摩
耗性にすぐれていることがわかった。From this figure, it was found that the oxide magnetic material according to Example 4 of the present invention has excellent wear resistance like the oxide magnetic materials according to Examples 1 to 3 above.
本発明の実施例に係る磁性材料の製造方法について述べ
る。A method for manufacturing a magnetic material according to an embodiment of the present invention will be described.
実施例１
本発明の実施例１に係る磁性材料は次のように製造され
た。Example 1 A magnetic material according to Example 1 of the present invention was manufactured as follows.
Ｆｅ２Ｏ３５３モル％とＭｎＯ３０モル％とＺｎ０ １
７モル％とを主成分とし、この原料に添加物としてＭｇ
Ｏ０，０２ｗｔ％を含有する様に秤量した原料を、ボー
ルミルにて４ＱＨｒ混合し、濾過、乾燥した粉末を８５
０℃大気中で２［１「仮焼した。続いてこの粉末をボー
ルミルにて２０１１「さらに微粉砕を行ない、バインダ
ーとしてポリビニルアルコール（ＰＶＡ）を１％混合し
て成形用粉末を得た。この成形用粉末をたて３２朋、よ
こ３２ａｎ、高さが１０藺のブロックに成形した。Fe2O353 mol%, MnO30 mol% and Zn0 1
7 mol% as the main component, and Mg as an additive to this raw material.
The raw materials weighed to contain 0.02 wt% of O were mixed in a ball mill for 4Qhr, filtered, and the dried powder was heated to 85% by weight.
The powder was calcined at 0°C in the atmosphere for 20 minutes.Then, this powder was further finely pulverized in a ball mill, and 1% polyvinyl alcohol (PVA) was mixed as a binder to obtain a powder for molding. The molding powder was molded into a block measuring 32 mm in length, 32 mm in width, and 10 mm in height.
Ｎ２雰囲気中で１２５０℃、３１１ｒ焼成（−次焼成）
し、焼結体を得た。さらにこの焼結体をＡｒガス中で１
２００℃、 １０００ｋ（１／ｃｎ、 ４１１ｒＨＩ
Ｐ処理し、得られた圧粉体を後熱処理工程として８００
℃でづＨｒ、Ｎ２ガス中で９８理し酸化物磁性材料のブ
ロックを得た。1250℃, 311r firing in N2 atmosphere (-second firing)
A sintered body was obtained. Furthermore, this sintered body was placed in Ar gas for 1
200℃, 1000k (1/cn, 411rHI
After P treatment, the resulting green compact was subjected to a post-heat treatment step of 800
A block of oxide magnetic material was obtained by annealing at 98° C. in N2 gas.
実施例２
本発明の実施例２に係る酸化物磁性材料は次のように製
造された。Example 2 An oxide magnetic material according to Example 2 of the present invention was manufactured as follows.
実施例１と同じ組成を主成分とする原料粉末に、ＭｑＯ
を０，１ｗｔ％添加し、実施例１と同様に混合粉砕、濾
過、乾燥、仮焼、ｉ粉砕して粉末製造し、−次焼成、Ｈ
Ｉ Ｐ、後熱処理を行ない、酸化物磁性材料のブロック
を得た。MqO was added to the raw material powder mainly having the same composition as in Example 1.
0.1 wt% was added, mixed and pulverized, filtered, dried, calcined and pulverized in the same manner as in Example 1 to produce a powder, followed by subsequent calcination, H
IP and post-heat treatment were performed to obtain a block of oxide magnetic material.
実施例３
本発明の実施例３に係る酸化物磁性材料は次のように製
造された。Example 3 An oxide magnetic material according to Example 3 of the present invention was manufactured as follows.
実施例１と同じ組成を主成分とする原料粉末に、ＭｇＯ
を０．０３ｗｔ％、ＣａＯを○、Ｑ４ｗｔ％添加し、実
施例１と同様の工程にてブロックを得た。MgO was added to the raw material powder mainly having the same composition as in Example 1.
A block was obtained in the same process as in Example 1 by adding 0.03 wt% of CaO and 4 wt% of CaO.
実施例４
本発明の実施例４に係る酸化物磁性材料は次のように製
造された。Example 4 An oxide magnetic material according to Example 4 of the present invention was manufactured as follows.
Ｆｅ２Ｏ３を５２．５モル％、ＭｎＯを２７モル％、ｚ
ｎｏを２０．５モル％の組成を主成分とし、この原料に
添加物としてＭＣｌ０を０．０５ｗｔ％、ＣａＯを０．
０２Ｖｔ％添加し、実施例１と同様に混合粉砕、濾過、
乾燥、仮焼、微粉砕して粉末を作成し、プレスして成形
体を得た。この成形体を１３００℃ににて０．５％の０
２を含むＮ２雰囲気中で３１１ｒ焼成し、得られた焼結
体を１２５０”Ｃ，１０００ｋａ／ｃＩｄ、 ４Ｈｒ、
Ａ ｒガス中でＨＩＰ処理し、さらに７５０”Ｃで１
＋（ｒＮ２ガス中で後熱処理を行なって酸化物磁性材料
のブロックを得た。Fe2O3 52.5 mol%, MnO 27 mol%, z
The main component is 20.5 mol% of NO, and 0.05 wt% of MCl0 and 0.05 wt% of CaO are added to this raw material as additives.
02Vt% was added, mixed and pulverized, filtered and filtered in the same manner as in Example 1.
A powder was prepared by drying, calcining, and finely pulverizing, and a molded body was obtained by pressing. This molded body was heated to 1300°C with a concentration of 0.5%
The resulting sintered body was fired at 1250"C, 1000ka/cId, 4Hr,
HIPed in Ar gas and further heated at 750"C for 1
A block of oxide magnetic material was obtained by post-heat treatment in +(rN2 gas).
以上のべたとおり、本発明の酸化物磁性材料は、既存の
フェライト系酸化物磁性材料に比較して耐摩耗性に優れ
ているため、磁気ヘッド材として用いるのに適している
ことがわかる。また、磁気へラド材として充分な磁気特
性を有しているため、０ＡＩＩ器に限らず、家庭用及び
業務用のＶＴＲヘッドその他広汎に使用することができ
る。As described above, the oxide magnetic material of the present invention has excellent wear resistance compared to existing ferrite-based oxide magnetic materials, and is thus found to be suitable for use as a magnetic head material. In addition, since it has sufficient magnetic properties as a magnetic helad material, it can be used not only for 0AII devices but also for a wide range of household and business VTR heads and other uses.
第１図は本発明の実施例１〜３および比較例１に係る酸
化物磁性材料のｉ！ｉＩ４摩耗試験結果を示す図、第２
図ｔよ本発明の実施例４及び比較例２に係る酸化物磁性
材料の耐摩耗試験結果を示す図である。
２祁工隔ｉ（〜１．ｎ）
□加工晴間（Ｍ ｉｎ ）FIG. 1 shows the i! of oxide magnetic materials according to Examples 1 to 3 of the present invention and Comparative Example 1. Diagram showing iI4 wear test results, 2nd
FIG. t is a diagram showing the results of a wear resistance test of oxide magnetic materials according to Example 4 of the present invention and Comparative Example 2. 2 machining interval i (~1.n) □ machining interval (M in )
Claims (1)
鉛（ＺｎＯ）６〜３０％、残部が実質的に酸化第二鉄（
Ｆｅ＿２Ｏ＿３）よりなる主成分と、副成分として酸化
マグネシウム（ＭｇＯ）を０．０１〜０．２重量％、酸
化カルシウム （ＣａＯ）を０〜０．２重量％含有し、 高密度で高耐摩耗性を有することを特徴とする酸化物磁
性材料。1. 20 to 40 mol% of manganese oxide (MnO), 6 to 30% of zinc oxide (ZnO), and the balance is substantially ferric oxide (
The main component is Fe_2O_3), and contains 0.01 to 0.2% by weight of magnesium oxide (MgO) and 0 to 0.2% by weight of calcium oxide (CaO) as subcomponents, and has high density and high wear resistance. An oxide magnetic material characterized by having:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63087368A JP2627637B2 (en) | 1988-04-11 | 1988-04-11 | Oxide magnetic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63087368A JP2627637B2 (en) | 1988-04-11 | 1988-04-11 | Oxide magnetic material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01259508A true JPH01259508A (en) | 1989-10-17 |
| JP2627637B2 JP2627637B2 (en) | 1997-07-09 |
Family
ID=13912954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63087368A Expired - Lifetime JP2627637B2 (en) | 1988-04-11 | 1988-04-11 | Oxide magnetic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2627637B2 (en) |
-
1988
- 1988-04-11 JP JP63087368A patent/JP2627637B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2627637B2 (en) | 1997-07-09 |
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