JPS6224422A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS6224422A JPS6224422A JP60163053A JP16305385A JPS6224422A JP S6224422 A JPS6224422 A JP S6224422A JP 60163053 A JP60163053 A JP 60163053A JP 16305385 A JP16305385 A JP 16305385A JP S6224422 A JPS6224422 A JP S6224422A
- Authority
- JP
- Japan
- Prior art keywords
- protective layer
- magnetic recording
- recording medium
- teflon
- fine holes
- 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
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 44
- 239000011241 protective layer Substances 0.000 claims abstract description 31
- 239000000314 lubricant Substances 0.000 claims abstract description 18
- 229920006362 Teflon® Polymers 0.000 claims abstract description 11
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 claims abstract description 6
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004809 Teflon Substances 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 6
- 238000007747 plating Methods 0.000 abstract description 5
- 229910052703 rhodium Inorganic materials 0.000 abstract description 5
- 239000010948 rhodium Substances 0.000 abstract description 5
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 abstract description 5
- 238000004544 sputter deposition Methods 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 238000007598 dipping method Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 238000004528 spin coating Methods 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000001771 vacuum deposition Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000007738 vacuum evaporation Methods 0.000 description 3
- -1 5in2 Chemical compound 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Lubricants (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、保護膜を存する磁気記録媒体に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a magnetic recording medium having a protective film.
従来の磁気記録媒体、特に高密度記録用固定ディスクは
、第３図に示すように、例えばアルミニウム合金からな
る基体ｌの上に、磁性酸化物を塗布するか、または強磁
性金属膜を真空蒸着法、メッキ法、スパッタリング法等
によって付着させて磁気記録層２を形成し、さらにその
上に、例えばＳ ｉ Ｏｔや強磁性金属膜の表面を酸化
された保１ｌ１３′を設け、この磁気記録媒体の使用時
に磁気へ７ド（図示せず）と磁気記録Ｎ２が直接接しな
いような構造となっている。Conventional magnetic recording media, particularly fixed disks for high-density recording, are manufactured by coating a magnetic oxide or vacuum-depositing a ferromagnetic metal film on a substrate made of, for example, an aluminum alloy, as shown in FIG. A magnetic recording layer 2 is formed by depositing the magnetic recording layer 2 by a method such as a method, a plating method, a sputtering method, etc., and a layer 1113' having an oxidized surface of, for example, SiOt or a ferromagnetic metal film is provided on top of the magnetic recording layer 2. The structure is such that the magnetic recording head (not shown) and the magnetic recording N2 do not come into direct contact when used.
しかしながら、保護層３′にＳｉＯ□を使用した場合に
は、この保護ＩＭ３′の表面３ａは平滑性に優れている
ため、磁気ヘッドの磁気記録媒体と接する部分が前記保
護層３′の表面３ａと密着し、最悪の場合には張り付い
て起動不良や保３１層３゛の破を員または磁気ヘッドの
破ｔＭをきたすという問題点があった。However, when SiO□ is used for the protective layer 3', the surface 3a of the protective IM 3' has excellent smoothness, so that the surface 3a of the protective layer 3' is in contact with the magnetic recording medium of the magnetic head. In the worst case, the magnetic head may stick to the magnetic head, and in the worst case, it may cause startup failure, damage to the protective layer 31, or damage to the magnetic head.
また、強磁性金属膜の酸化■りを用いた場合には、磁気
記録媒体の保護層３′の表面３ａに磁気ヘッドを接触さ
せてｆ１１気記録媒体を回転させるため、磁気ヘッドが
磁気記録媒体の保護［３’の表面３ａを引きずって移動
する形となり、そのため酸化膜が剥離しやすく、また剥
離した酸化膜が磁気ヘッドのギャップ部に付着し目づま
りを起こして出力の低下を招く等の問題点があった。Furthermore, when oxidizing a ferromagnetic metal film is used, the magnetic head contacts the surface 3a of the protective layer 3' of the magnetic recording medium to rotate the magnetic recording medium. Protection [3'] The surface 3a of the magnetic head is dragged and moved, which causes the oxide film to peel off easily, and the peeled oxide film adheres to the gap part of the magnetic head, causing clogging and causing problems such as a decrease in output. There was a point.
本発明は上記問題点を除去し、摩擦係数が小さくかつ保
護層３′の剥離が少ない磁気記録媒体を提供することを
目的とする。An object of the present invention is to eliminate the above-mentioned problems and provide a magnetic recording medium with a small coefficient of friction and less peeling of the protective layer 3'.
本発明の磁気記録媒体は、基体上に酸化物または強磁性
金属膜を設けた磁気記録媒体において、前記磁性酸化物
または強磁性金属膜の表面に複数個の微細穴を有する保
護層を形成するとともに、前記微細穴にテフロン系潤滑
剤を含浸させるようにしたものである。The magnetic recording medium of the present invention is a magnetic recording medium in which an oxide or ferromagnetic metal film is provided on a substrate, and a protective layer having a plurality of micropores is formed on the surface of the magnetic oxide or ferromagnetic metal film. In addition, the fine holes are impregnated with a Teflon-based lubricant.
本発明の磁気記録媒体では、保護層の微細穴に含浸され
たテフロン系潤滑剤が磁気ヘッドと磁気記録媒体との間
の摩擦係数を小さくする。In the magnetic recording medium of the present invention, the Teflon-based lubricant impregnated into the micropores of the protective layer reduces the coefficient of friction between the magnetic head and the magnetic recording medium.
〔実施例〕
以下、本発明の一実施例について、第１図および第２図
を用いて説明する。第１図は本発明の磁気記録媒体の構
成を示す断面図、第２０図は同しく本発明の磁気記録媒
体の表面状態を示す平面図である。[Example] An example of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a sectional view showing the structure of the magnetic recording medium of the present invention, and FIG. 20 is a plan view showing the surface state of the magnetic recording medium of the present invention.
ｌは例えばアルミニウム合金等からなる磁気記録媒体の
基体であり、基体ｌの上には、磁性酸化物を塗布するか
、あるいは強磁性金属膜を真空蒸着法、メッキ法、スパ
ッタリング法等によって付着された磁気記録層２が設け
である。l is the base of the magnetic recording medium made of, for example, an aluminum alloy, and on the base l, a magnetic oxide is coated, or a ferromagnetic metal film is deposited by vacuum evaporation, plating, sputtering, etc. A magnetic recording layer 2 is provided.
３は保３ｉ層で、この保護層３は磁気記録Ｎ２の上に真
空蒸着法、メッキ法、スパッタリング法、塗布、スピン
コーティング、ディップ等によって膜厚数十オングスト
ロームから数百オングストロームの保護層を、例えば炭
素、５ｉｎ２、ロジウムなどで形成したものである。４
は前記保護層３の表面３ａに形成された複数個の微細穴
であり、この微細穴４は前記保護層３がアモルファスに
近い構造であることや、また陽極酸化の表面処理方法を
施すならばこれにより保護層の表面３ａに形成され、そ
の微細穴４の大きさは数オングストロームから数十ミク
ロンメートルが適当である。なお、前記保護層は熱的に
は不良導体であって、熱絶縁性を有している。3 is a protective layer 3, and this protective layer 3 has a thickness of several tens of angstroms to several hundred angstroms formed on the magnetic recording layer N2 by vacuum evaporation, plating, sputtering, coating, spin coating, dipping, etc. For example, it is made of carbon, 5in2, rhodium, etc. 4
are a plurality of micro holes formed on the surface 3a of the protective layer 3, and the micro holes 4 are formed by the fact that the protective layer 3 has a structure close to amorphous, and if the surface treatment method of anodic oxidation is applied. This forms micropores 4 on the surface 3a of the protective layer, and the appropriate size of the micropores 4 is from several angstroms to several tens of micrometers. Note that the protective layer is a thermally poor conductor and has thermal insulation properties.
さらに、保護層３の表面３ａと磁気ヘッドとの摩擦係数
を小さくするために、例えば４フッ化エチレン等でなる
テフロン系潤滑剤５を保護層３の表面３ａに塗布して潤
滑剤５を前記保護層３の微細穴４に含浸させる。Further, in order to reduce the coefficient of friction between the surface 3a of the protective layer 3 and the magnetic head, a Teflon-based lubricant 5 made of, for example, tetrafluoroethylene is applied to the surface 3a of the protective layer 3, and the lubricant 5 is applied to the surface 3a of the protective layer 3. The micropores 4 of the protective layer 3 are impregnated.
このように、本発明の磁気記録媒体では、保護層３に炭
素、ＳｉＯ□、ロジウムなどの皮膜でなる固体潤滑剤と
テフロン系の液体潤滑剤とを併用することによって摩擦
および摩耗を少なくし、潤滑性の向上を図っている。例
えば、４フッ化エチレンは動摩擦係数や静摩擦係数が固
体潤滑剤の２であるという利点を有する一方、すぐにけ
ずれやすいという不都合を有する。本発明の磁気記録媒
体では、固体潤滑剤との併用で４フッ化エチレンの優れ
た特性を長持ちさせることが可能となる。As described above, in the magnetic recording medium of the present invention, friction and wear are reduced by using a solid lubricant made of a film of carbon, SiO□, rhodium, etc. together with a Teflon-based liquid lubricant in the protective layer 3. Efforts are being made to improve lubricity. For example, tetrafluoroethylene has the advantage of having a dynamic friction coefficient and static friction coefficient of 2 compared to solid lubricants, but has the disadvantage that it easily wears off. In the magnetic recording medium of the present invention, the excellent properties of tetrafluoroethylene can be maintained for a long time by using it in combination with a solid lubricant.
本発明によれば、保護層の表面にテフロン系潤滑剤を塗
布することによりこの潤滑剤が微細穴の中に含浸される
ので、潤滑剤が磁気ヘッドと磁気記録媒体の保ｇ１層と
の摩擦係数を小さくし、保護層の剥離を防ぎ、走行の安
定化を図ることができる。According to the present invention, by applying a Teflon-based lubricant to the surface of the protective layer, this lubricant is impregnated into the fine holes, so that the lubricant causes friction between the magnetic head and the retention layer of the magnetic recording medium. It is possible to reduce the coefficient, prevent peeling of the protective layer, and stabilize running.
また、炭繁、Ｓｉｎ、、ロジウムなどでなる皮膜は硬度
が高く磁気記録層との密着性にも優れているため、保護
層の表面の破損あるいは剥離を起こしにくいという効果
がある。Furthermore, since the film made of charcoal, sin, rhodium, etc. has high hardness and excellent adhesion to the magnetic recording layer, it has the effect that the surface of the protective layer is less likely to be damaged or peeled off.
なお、微細穴は炭素、Ｓｉｎｇ、ロジウムなどの皮膜層
をスパッタ、真空蒸着、メッキ、コーティング、■布、
ディップ法等により形成されるので、特別な加工工程を
必要としない。In addition, the fine holes can be made by sputtering, vacuum evaporation, plating, coating, cloth, etc.
Since it is formed by a dipping method or the like, no special processing steps are required.
第１図は本発明の磁気記録媒体の構成を示す断面図、第
２図は同じく表面状態を示す平面図、第３図は従来の磁
気記録媒体の断面図である。
図において、
１・・・・・基体、
２・・・・・磁気記録層、
３・・・・・保護層、
３ａ・・・・・保護層の表面、
４・・・・・微細穴、
５・・・・・テフロン系潤滑剤である。
第１図
第２図
第３図FIG. 1 is a sectional view showing the structure of the magnetic recording medium of the present invention, FIG. 2 is a plan view showing the surface condition, and FIG. 3 is a sectional view of a conventional magnetic recording medium. In the figure, 1...substrate, 2...magnetic recording layer, 3...protective layer, 3a...surface of protective layer, 4...microhole, 5...Teflon-based lubricant. Figure 1 Figure 2 Figure 3
Claims (2)
磁気記録媒体において、前記磁性酸化物または強磁性金
属膜の表面に複数個の微細穴を有する保護層を形成し、
前記微細穴にテフロン系潤滑剤を含浸させたことを特徴
とする磁気記録媒体。(1) In a magnetic recording medium in which a magnetic oxide or ferromagnetic metal film is provided on a substrate, a protective layer having a plurality of microholes is formed on the surface of the magnetic oxide or ferromagnetic metal film,
A magnetic recording medium characterized in that the minute holes are impregnated with a Teflon-based lubricant.
くは４フッ化エチレンを主体にしたものでなることを特
徴とする特許請求の範囲第１項記載の磁気記録媒体。(2) The magnetic recording medium according to claim 1, wherein the Teflon-based lubricant is a tetrafluoroethylene-based lubricant or one based on tetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60163053A JPS6224422A (en) | 1985-07-25 | 1985-07-25 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60163053A JPS6224422A (en) | 1985-07-25 | 1985-07-25 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6224422A true JPS6224422A (en) | 1987-02-02 |
Family
ID=15766276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60163053A Pending JPS6224422A (en) | 1985-07-25 | 1985-07-25 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6224422A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01125719A (en) * | 1987-11-10 | 1989-05-18 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
| EP0468778A2 (en) * | 1990-07-24 | 1992-01-29 | Nippon Sheet Glass Co., Ltd. | A magnetic recording medium and a method of manufacturing the same |
-
1985
- 1985-07-25 JP JP60163053A patent/JPS6224422A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01125719A (en) * | 1987-11-10 | 1989-05-18 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
| EP0468778A2 (en) * | 1990-07-24 | 1992-01-29 | Nippon Sheet Glass Co., Ltd. | A magnetic recording medium and a method of manufacturing the same |
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