JPS6363973B2 - - Google Patents
Info
- Publication number
- JPS6363973B2 JPS6363973B2 JP58175064A JP17506483A JPS6363973B2 JP S6363973 B2 JPS6363973 B2 JP S6363973B2 JP 58175064 A JP58175064 A JP 58175064A JP 17506483 A JP17506483 A JP 17506483A JP S6363973 B2 JPS6363973 B2 JP S6363973B2
- Authority
- JP
- Japan
- Prior art keywords
- protective layer
- magnetic recording
- ferromagnetic metal
- thin film
- metal thin
- 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.)
- Expired
Links
- 230000005291 magnetic effect Effects 0.000 claims description 16
- 239000011241 protective layer Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 230000005294 ferromagnetic effect Effects 0.000 claims description 11
- 239000010409 thin film Substances 0.000 claims description 11
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 7
- 229930195729 fatty acid Natural products 0.000 claims description 7
- 239000000194 fatty acid Substances 0.000 claims description 7
- 150000004665 fatty acids Chemical class 0.000 claims description 7
- 125000000217 alkyl group Chemical group 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 125000005843 halogen group Chemical group 0.000 claims 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 150000002367 halogens Chemical group 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000007738 vacuum evaporation Methods 0.000 description 2
- 235000021357 Behenic acid Nutrition 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229940116226 behenic acid Drugs 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
Landscapes
- Magnetic Record Carriers (AREA)
Description
【発明の詳細な説明】 本発明は磁気記録媒体に関するものである。[Detailed description of the invention] The present invention relates to magnetic recording media.
磁気テープや磁気デイスク等の磁気記録媒体と
して、従来は、塗布型が主として用いられていた
が、最近は、強磁性金属を真空蒸着法やイオンプ
レーテインク法等により基体に付着した薄膜型の
ものが代りに用いられるようになつてきた。 In the past, coating-type magnetic recording media such as magnetic tapes and magnetic disks were mainly used, but recently, thin-film type magnetic recording media in which ferromagnetic metal is attached to a substrate by vacuum evaporation, ion plate ink, etc. have been used. Things have come to be used instead.
ところが、このような薄膜型の磁気記録媒体
は、磁性層が薄くて損傷し易く、耐摩耗性が低い
という欠点がある。このような欠点を改良するた
めに、通常は、磁性層の表面に保護層が設けられ
ているが、実用上十分な耐摩耗性が得られない欠
点があつた。 However, such thin-film magnetic recording media have the disadvantage that the magnetic layer is thin and easily damaged, and has low wear resistance. In order to improve these drawbacks, a protective layer is usually provided on the surface of the magnetic layer, but this method has the drawback that practically sufficient wear resistance cannot be obtained.
本発明は、以上の欠点を改良し、耐摩耗性を向
上しうる磁気記録媒体の提供を目的とするもので
ある。 The present invention aims to improve the above-mentioned drawbacks and provide a magnetic recording medium with improved wear resistance.
本発明は上記の目的を達成するために、基体に
強磁性金属薄膜を設け、該強磁性金属薄膜の表面
に保護層を設けた磁気記録媒体において、アルキ
ル基の水素をハロゲンにより置換した高級脂肪酸
またはその塩またはそのエステルを有する保護層
を設けることを特徴とする磁気記録媒体を提供す
るものである。 In order to achieve the above object, the present invention provides a magnetic recording medium in which a ferromagnetic metal thin film is provided on a substrate and a protective layer is provided on the surface of the ferromagnetic metal thin film, in which a higher fatty acid in which hydrogen in an alkyl group is replaced with a halogen is provided. The object of the present invention is to provide a magnetic recording medium characterized by providing a protective layer containing a salt thereof or an ester thereof.
以下、本発明を実施例に基づいて説明する。 Hereinafter, the present invention will be explained based on examples.
基体としては、ポリエステルフイルム等の高分
子フイルムを用いる。この基体に、鉄やコバル
ト、ニツケルあるいはそれ等の合金を真空蒸着法
やイオンプレーデイング法、スパツタリング法等
により付着して強磁性金属薄膜を形成する。そし
てこの強磁性金属薄膜の表面に保護層を形成す
る。保護層は、パルミチン酸やステアリン酸、ベ
ヘン酸等の高級脂肪酸やこれ等の高級脂肪酸のリ
チウム塩、ナトリウム塩、カルシウム塩、マグネ
シウム塩やあるいはこれ等の高級脂肪酸のメチル
エステル、エチルエステル、ブチルエステル等の
物質のアルキル基の水素の一部又は全部を、弗素
や塩素、臭素等のハロゲンにより置換した物質か
らなり、塗布して形成する。 As the substrate, a polymer film such as polyester film is used. A ferromagnetic metal thin film is formed on this substrate by depositing iron, cobalt, nickel, or an alloy thereof by vacuum evaporation, ion plating, sputtering, or the like. A protective layer is then formed on the surface of this ferromagnetic metal thin film. The protective layer contains higher fatty acids such as palmitic acid, stearic acid, and behenic acid, lithium salts, sodium salts, calcium salts, and magnesium salts of these higher fatty acids, and methyl esters, ethyl esters, and butyl esters of these higher fatty acids. It is made of a substance in which part or all of the hydrogen in the alkyl group of a substance such as fluorine, chlorine, bromine, etc. is replaced with a halogen such as fluorine, chlorine, bromine, etc., and is formed by coating.
すなわち、高級脂肪酸のアルキル基はＣ―Ｈの
結合よりもＣ―ハロゲン族元素の方がその結合エ
ネルギーが大きく、そのためにこのような物質か
らなる保護層表面を磁気ヘツド等が擦つても容易
にはその一部が剥れたりしない。それ故、磁気記
録媒体としてのスチールライフ等の特性も向上す
る。 In other words, the bond energy of the alkyl group of higher fatty acids is greater for C-halogen group elements than for C-H bonds, and therefore, even if the surface of the protective layer made of such a substance is rubbed by a magnetic head, etc., it will not be easily removed. Part of it will not peel off. Therefore, characteristics such as steel life as a magnetic recording medium are also improved.
例えば、基体として厚さ15μのポリエステルフ
イルムを用い、Coの強磁性金属を真空蒸着法に
より付着して強磁性金属薄膜とし、高級脂肪酸と
してステアリン酸ブチルを用い、このアルキル基
の水素を４個だけ塩素に置換した物質をトルエ
ン：エタノール＝１：１の割合で混合した溶媒中
に0.1％溶かした溶液を強磁性金属薄膜表面に厚
さ400Åに塗布して保護層を形成した本発明の実
施例と、保護層がステアリン酸ブチルをトルエ
ン：エタノール＝１：１の割合で混合した溶媒中
に0.1％溶かした溶液を塗布して形成する以外は
上記本発明の実施例と同じ条件で製造した従来例
とについてスチールライフを測定した。その結
果、本発明の実施例が50分であつたのに対して、
従来例は20分であり、本発明による方が2.5倍に
なつている。 For example, a 15μ thick polyester film is used as the base, a ferromagnetic metal such as Co is deposited by vacuum evaporation method to form a ferromagnetic metal thin film, butyl stearate is used as the higher fatty acid, and only four hydrogen atoms of this alkyl group are used. An example of the present invention in which a protective layer was formed by coating the surface of a ferromagnetic metal thin film to a thickness of 400 Å with a solution prepared by dissolving 0.1% of a substance substituted with chlorine in a solvent mixed at a ratio of toluene:ethanol = 1:1. and a conventional method manufactured under the same conditions as the above embodiments of the present invention, except that the protective layer was formed by coating a solution of 0.1% butyl stearate dissolved in a solvent mixed at a ratio of toluene:ethanol = 1:1. Steel life was measured for example. As a result, while the example of the present invention took 50 minutes,
The conventional example takes 20 minutes, and the time according to the present invention is 2.5 times longer.
なお、上記の実施例では、保護層を強磁性金属
薄膜の表面に直接設けられているが、他の例えば
金属層や樹脂層等の中間層を介してその中間層の
表面に保護層を設ける構造にしてもよい。 In the above embodiment, the protective layer is provided directly on the surface of the ferromagnetic metal thin film, but the protective layer may be provided on the surface of the intermediate layer via another intermediate layer such as a metal layer or a resin layer. It may be a structure.
以上の通り、本発明によれば、保護層の耐摩耗
性を向上でき、スチールライフを改良しうる磁気
記録媒体が得られる。 As described above, according to the present invention, a magnetic recording medium can be obtained in which the wear resistance of the protective layer can be improved and the steel life can be improved.
Claims (1)
薄膜の表面に保護層を設けた磁気記録媒体におい
て、アルキル基の水素をハロゲンにより置換した
高級脂肪酸またはその塩またはそのエステルを含
む保護層を設けることを特徴とする磁気記録媒
体。1. In a magnetic recording medium in which a ferromagnetic metal thin film is provided on a substrate and a protective layer is provided on the surface of the ferromagnetic metal thin film, a protective layer containing a higher fatty acid, a salt thereof, or an ester thereof in which the hydrogen of an alkyl group is replaced with a halogen is used. A magnetic recording medium comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17506483A JPS6066326A (en) | 1983-09-21 | 1983-09-21 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17506483A JPS6066326A (en) | 1983-09-21 | 1983-09-21 | Magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6066326A JPS6066326A (en) | 1985-04-16 |
| JPS6363973B2 true JPS6363973B2 (en) | 1988-12-09 |
Family
ID=15989596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17506483A Granted JPS6066326A (en) | 1983-09-21 | 1983-09-21 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6066326A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0766530B2 (en) * | 1985-10-31 | 1995-07-19 | ソニー株式会社 | Magnetic recording medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5744226A (en) * | 1980-08-30 | 1982-03-12 | Sony Corp | Magnetic recording medium |
| JPS57191831A (en) * | 1981-05-20 | 1982-11-25 | Matsushita Electric Ind Co Ltd | Metallic thin film type magnetic recording medium and its manufacture |
| JPS5829147A (en) * | 1981-08-15 | 1983-02-21 | Sony Corp | Magnetic recording medium |
| JPS5873018A (en) * | 1981-10-26 | 1983-05-02 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
-
1983
- 1983-09-21 JP JP17506483A patent/JPS6066326A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5744226A (en) * | 1980-08-30 | 1982-03-12 | Sony Corp | Magnetic recording medium |
| JPS57191831A (en) * | 1981-05-20 | 1982-11-25 | Matsushita Electric Ind Co Ltd | Metallic thin film type magnetic recording medium and its manufacture |
| JPS5829147A (en) * | 1981-08-15 | 1983-02-21 | Sony Corp | Magnetic recording medium |
| JPS5873018A (en) * | 1981-10-26 | 1983-05-02 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6066326A (en) | 1985-04-16 |
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