JPH01271911A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPH01271911A JPH01271911A JP9943288A JP9943288A JPH01271911A JP H01271911 A JPH01271911 A JP H01271911A JP 9943288 A JP9943288 A JP 9943288A JP 9943288 A JP9943288 A JP 9943288A JP H01271911 A JPH01271911 A JP H01271911A
- Authority
- JP
- Japan
- Prior art keywords
- perfluoropolyether
- coated
- acid resin
- thin film
- treatment liquid
- 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 description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 239000010702 perfluoropolyether Substances 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 9
- 125000000524 functional group Chemical group 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims abstract description 6
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract 2
- 239000010409 thin film Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- ZFLIKDUSUDBGCD-UHFFFAOYSA-N parabanic acid Chemical compound O=C1NC(=O)C(=O)N1 ZFLIKDUSUDBGCD-UHFFFAOYSA-N 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 13
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 239000003575 carbonaceous material Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 16
- 239000010408 film Substances 0.000 description 14
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical compound FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001755 magnetron sputter deposition Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- QIVUCLWGARAQIO-OLIXTKCUSA-N (3s)-n-[(3s,5s,6r)-6-methyl-2-oxo-1-(2,2,2-trifluoroethyl)-5-(2,3,6-trifluorophenyl)piperidin-3-yl]-2-oxospiro[1h-pyrrolo[2,3-b]pyridine-3,6'-5,7-dihydrocyclopenta[b]pyridine]-3'-carboxamide Chemical compound C1([C@H]2[C@H](N(C(=O)[C@@H](NC(=O)C=3C=C4C[C@]5(CC4=NC=3)C3=CC=CN=C3NC5=O)C2)CC(F)(F)F)C)=C(F)C=CC(F)=C1F QIVUCLWGARAQIO-OLIXTKCUSA-N 0.000 description 2
- 229910001096 P alloy Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- -1 phosphorus compound Chemical class 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 235000003441 saturated fatty acids Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Laminated Bodies (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〕
本発明は非磁性基板状に強磁性金属薄膜を設けて成る磁
気記録媒体に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording medium comprising a ferromagnetic metal thin film provided on a non-magnetic substrate.
金属媒体を有する磁気記録媒体では、磁気ヘッドとの接
触に十分耐えうる機械的信頼性を有することが必要不可
欠である。磁気記録媒体はドライ′ブ構成の簡略化によ
り、コンタクト・スタート・ストップ（以下Ｃ３Ｓ方式
と略す）が採用され、更に磁気記録面の保護のため、磁
気記録面以外のシツピングゾーンの同一トラックでＣ８
Ｓが行われる場合が多い。It is essential for a magnetic recording medium having a metal medium to have sufficient mechanical reliability to withstand contact with a magnetic head. Contact start/stop (hereinafter referred to as C3S method) has been adopted for magnetic recording media to simplify the drive configuration, and to protect the magnetic recording surface, the same track in the shipping zone other than the magnetic recording surface is C8
S is often performed.
また、磁気記録の高密度化にともない磁気ヘッドもフェ
ライトミニモノリシックヘッドから、コンポジットヘッ
ド、薄膜ヘッドと変わり、スライダー材の硬度が増加し
磁気記録体の保護膜の耐久性の向上が求められている。In addition, as magnetic recording density increases, magnetic heads are changing from ferrite mini-monolithic heads to composite heads and thin film heads, and as the hardness of slider materials increases, there is a need to improve the durability of the protective film of magnetic recording bodies. .
従来、金属磁性媒体の表面に飽和脂肪酸等の有機潤滑層
を設ける方法（特公昭５６−３０６０９号）脂肪酸アミ
ドとリン系化合物の混合潤滑層を設ける方法（特公昭５
９−１６５２３８）高級脂肪酸と脂肪酸金属塩の混合潤
滑層を設ける方法（特公昭５９−１７７７２８）等があ
るが、硬度の高いスライダーを有する磁気ヘッドでのＣ
８Ｓでは摩擦係数の上昇、クラッシュの問題がある。Conventionally, there has been a method of providing an organic lubricant layer of saturated fatty acids or the like on the surface of a metal magnetic medium (Japanese Patent Publication No. 56-30609), a method of providing a mixed lubricant layer of fatty acid amide and a phosphorus compound (Japanese Patent Publication No. 56-30609).
9-165238) There is a method of providing a mixed lubricating layer of higher fatty acids and fatty acid metal salts (Japanese Patent Publication No. 59-177728), but C
8S has problems with increased friction coefficient and crashes.
潤滑層と保護膜層との両方の特性を示す炭素質膜（特公
昭５４−３３５２１）（特開昭５３−１４３２０６）（
特開昭５６−４１５２４）は、ＣＳＳ時に傷が入らず磁
気ヘッドの衝撃をＭ１衝するため、磁気特性の劣化も見
られないが、硬度の寓いスライダーを有する磁気ヘッド
でのＣ８Ｓでは、Ｃ８Ｓ回数の増加につれ炭素質膜が削
れ摩擦係数が増大するという問題を有していた。Carbonaceous film exhibiting the characteristics of both a lubricating layer and a protective film layer (Japanese Patent Publication No. 54-33521) (Japanese Patent Publication No. 53-143206) (
Japanese Patent Application Laid-Open No. 56-41524) does not cause scratches during CSS and the impact of the magnetic head is M1, so no deterioration of magnetic properties is observed. There was a problem in that as the number of times increased, the carbonaceous film was scraped and the coefficient of friction increased.
上述のごと〈従来技術では硬度の高いスライダーを有す
る磁気ヘッドとのＣ８Ｓでは十分な機械的信頼性が得ら
れず摩擦係数の上昇を押さえることができなかった。As mentioned above, in the conventional technology, sufficient mechanical reliability could not be obtained with C8S using a magnetic head having a highly hard slider, and an increase in the coefficient of friction could not be suppressed.
そこで本発明はこの様な問題点を解決するもので、その
目的とするところは硬度の高いスライダーを有する磁気
ヘッドでのＣ３Ｓでも強磁性金属媒体に機械的ダメージ
を与えず、かつ摩擦係数も増加しない磁気記録媒体を提
供することである。Therefore, the present invention is intended to solve these problems, and its purpose is to prevent mechanical damage to the ferromagnetic metal medium even with C3S in a magnetic head with a highly hard slider, and to increase the coefficient of friction. The objective is to provide a magnetic recording medium that does not.
本発明の磁気記録媒体は、非磁性基板上に形成された強
磁性金属媒体上にＣｒ、Ｔｉ、Ｔａ、Ｎｂから選ばれる
少なくとも１種の物質より成る被膜の有無に於いて、炭
化物および炭素の物質より成る薄膜を形成し、概薄膜上
にポリパラバン酸樹脂が被覆され、概薄膜の表面に−Ｃ
ＯＯＨ，−ＣＨ！ＯＨ，−ＮＣＯ等の管能基を両末端ま
たは片末端に有するパーフロポリエーテルを被覆せしめ
たことを特徴とする。The magnetic recording medium of the present invention is characterized by the presence or absence of a coating made of at least one substance selected from Cr, Ti, Ta, and Nb on a ferromagnetic metal medium formed on a nonmagnetic substrate. A thin film made of the substance is formed, the thin film is coated with polyparabanic acid resin, and -C is coated on the surface of the thin film.
OOH, -CH! It is characterized by being coated with perfluoropolyether having functional groups such as OH and -NCO at both ends or one end.
Ｃｒ、Ｔｉ、Ｔａ、Ｎｂは強磁性体金属媒体と炭化物お
よび炭素間の密着をより確かにする目的で被覆し、その
膜厚は５０Δ〜１００人で十分である。Cr, Ti, Ta, and Nb are coated in order to further ensure the adhesion between the ferromagnetic metal medium and the carbide and carbon, and a film thickness of 50 Δ to 100 Δ is sufficient.
炭素はダイヤモンド状、グラファイト状、アモルフォス
状の何れでもよく膜厚は１５０人〜８００人形成する。The carbon may be diamond-like, graphite-like, or amorphous, and the film thickness is 150 to 800.
以上は真空蒸着法、スパッタリング法、イオンブレーテ
ィング法やＣＶＤ法の何れの方法でも形成可能である。The above can be formed by any method such as a vacuum evaporation method, a sputtering method, an ion blating method, or a CVD method.
パーフロロポリエーテルは、Ｆ−（ＣＦ、・ＣＦ。Perfluoropolyether is F-(CF, CF.
・ＣＦｚＯ） −−Ｃ５Ｆｓなどの構造式の末端に−Ｃ
００Ｈ，ＣＨ＊ＯＨ，−ＮＣＯ等の官能基を有するもの
を用いるが、単独でも混合させてもよい。・CFzO) --C at the end of the structural formula such as C5Fs
Those having functional groups such as 00H, CH*OH, and -NCO are used, but they may be used alone or in combination.
パーフロロポリエーテルとポリパラバン酸樹脂は極性溶
媒に溶解し、スピンコード法、スプレー法、等速引き上
げ法の既知の塗布力で形成する。何れの方法でも膜厚は
２０人〜１００人が適切であった。The perfluoropolyether and polyparabanic acid resin are dissolved in a polar solvent, and formed using a known coating force such as a spin code method, a spray method, or a constant velocity pulling method. In either method, a film thickness of 20 to 100 was appropriate.
強磁性金属媒体上に形成された炭化物、炭素は磁気ヘッ
ドの衝撃を緩衝する機能があるが硬度の高いスライダー
を有する磁気ヘッドとのＣ８Ｓでは炭素質膜が削れてし
まう。そこで炭素質膜の表面に、耐摩耗性の優れたポリ
パラバン酸樹脂を被覆する。ポリパラバン酸樹脂の被膜
は柔軟性にも富むため耐衝撃性にも強く、また耐熱性に
も優れており１８０°Ｃで長時間保存しても劣化しない
。Carbide and carbon formed on a ferromagnetic metal medium have a function of buffering the impact of a magnetic head, but in C8S with a magnetic head having a highly hard slider, the carbon film is scraped. Therefore, the surface of the carbonaceous membrane is coated with a polyparabanic acid resin that has excellent wear resistance. The polyparabanic acid resin coating is highly flexible and has strong impact resistance.It also has excellent heat resistance and will not deteriorate even if stored at 180°C for a long time.
パーフロロポリエーテルは摩擦力を低減する。Perfluoropolyether reduces frictional forces.
また末端についている官能基がポリパラバン酸上の表面
の微細孔に固定されるため、Ｃ８Ｓ時にドライブの温度
が上昇しても飛散、揮発などによるマイグレーションが
起こらず効果が持続する。Furthermore, since the functional groups attached to the terminals are fixed in the micropores on the surface of polyparabanic acid, even if the temperature of the drive increases during C8S, migration due to scattering, volatilization, etc. does not occur, and the effect is maintained.
次に実施例で具体的に説明する。Next, a concrete explanation will be given in Examples.
〔実施例−１〕
鏡面仕上げされたディスク状アルミニウム合金基板状に
非磁性合金めっきとしてＮ１−Ｐ合金めつきを約１５μ
ｍの厚さにめっき後、研磨により１０μｍの厚さ、表面
粗さ０．０３μｍ以下にし、更に金属磁性薄膜としてＣ
ｏ−Ｎ１−Ｐ合金を約０．０６μｍ厚にめっきした。[Example-1] N1-P alloy plating was applied to a disk-shaped aluminum alloy substrate with a mirror finish to a thickness of approximately 15μ as non-magnetic alloy plating.
After plating to a thickness of m, polish to a thickness of 10 μm and a surface roughness of 0.03 μm or less, and then coat as a metal magnetic thin film.
o-N1-P alloy was plated to a thickness of about 0.06 μm.
次にマグネトロンスパッタ法でＣｒを１００人、アモル
フオス状炭素質膜を３００人連続して形成した。Next, 100 Cr films and 300 amorphous carbonaceous films were successively formed by magnetron sputtering.
このディスクに下記処理液（１）約２ｍｌをディスクに
滴下し３０００ｒｐｍで２０秒間回転させるスピンコー
ドを行い、更にクリーンオーブン中で１００°Ｃ３０分
焼成した。更に下記処理液（２）を用い等速引き上げ法
（引き上げ速度１００ｍ／ｍ１ｎ）で引き上げ、パーフ
ロロポリエーテルを塗布した。Approximately 2 ml of the following treatment solution (1) was dropped onto the disk, and a spin code was applied by rotating the disk at 3000 rpm for 20 seconds, and the disk was further baked at 100° C. for 30 minutes in a clean oven. Furthermore, the following treatment liquid (2) was used to pull up by a constant speed pulling method (pulling speed: 100 m/m1n), and perfluoropolyether was applied.
処理液（１）
ポリパラバン酸樹脂 ＸＴ−１” ０．５ｇＤＭ
Ｆ （ジメチルフォルムアミド） ５０ｍ１＊１東
亜燃料工業（株Ｌｉ
処理液（２）
ＦＯＭＢ Ｌ Ｉ ＮＺＤＩＡＣ＊” ’
０ 、５ ｇダイフロンＳ−３” １
０００ｍｌ＊２モンテジソン社製
＊３ダイキン工業（株）製
〔実施例−２〕
実施例１と同様にして金属媒体を有するディスクを作成
した。Treatment liquid (1) Polyparabanic acid resin XT-1” 0.5gDM
F (dimethylformamide) 50m1*1 Toa Fuel Industries (Li Co., Ltd.) Treatment liquid (2) FOMB LI NZDIAC*"'
0,5 g Daiflon S-3” 1
000ml*2 Manufactured by Montageson *3 Manufactured by Daikin Industries, Ltd. [Example 2] A disk having a metal medium was prepared in the same manner as in Example 1.
次にマグネトロンスパッタ装置でＮｂを１００人アモル
フォス状の炭素質膜を３００人連続して形成した。この
ディスクに下記処理液（３）約２ｍ１滴下し３０００ｒ
ｐｍで３０秒間回転させるスピンコードを行い、さらに
クリーンオーブンで１５０′Ｇ３０分焼成した。更に下
記処理液（４）を用い等速引き上げ法（引き上げ速度１
０ ｃ ｍ ／ ｍ１ｎ）で引き上げパーフロロポリエ
ーテルを塗布した。Next, an amorphous carbonaceous film was successively formed using a magnetron sputtering apparatus by 100 people using Nb and 300 people. Drop approximately 2ml of the following treatment liquid (3) onto this disk for 3000r.
The sample was subjected to a spin code of rotating at pm for 30 seconds, and then baked in a clean oven at 150'G for 30 minutes. Furthermore, using the following treatment liquid (4), a uniform pulling method (pulling speed 1
The pulled perfluoropolyether was applied at a rate of 0 cm/m1n).
処理液（３）
ポリパラバン酸樹脂 ＸＴ−４＊４ ０．２５ｇＴＨＦ
（テトラヒドロフラン） ３５ｍｌＤＭＦ
（ジメチルフォルムアミド） １５ｍｌ＊４東亜燃
料工業（株）製
処理液（４）
ＦＯＭＢＬＩＮＺＤＯＬ
０． ３ｇダイフロンＳ−５−３ｌ０００
〔実施例−３〕
実施例１と同様にして金属媒体を有するディスクを作成
した。Treatment liquid (3) Polyparabanic acid resin XT-4*4 0.25gTHF
(Tetrahydrofuran) 35mlDMF
(Dimethylformamide) 15ml*4 Toa Fuel Industries Co., Ltd. treatment liquid (4) FOMBLINZDOL
0. 3g Daiflon S-5-3l000 [Example 3] A disk having a metal medium was produced in the same manner as in Example 1.
次にマグネトロンスパッタ装置でアモルフォス状の炭素
質膜を８００人形成した。次に下記処理液（５）を用い
、等速引き上げ法（引き上げ速度１０ｃｍ／ｍ１ｎ）で
引き上げ、クリーンオーブン中で１５０°Ｃ３０分焼成
した。更に下記処理液（６）を用い等速引き上げ法（引
き上げ速度１０ｃ ｍ ／ ｍ ｉ ｎ ）で引き上げ
、パーフロロポリエーテルを塗布した。Next, 800 amorphous carbon films were formed using a magnetron sputtering device. Next, using the following treatment liquid (5), the material was pulled up by a constant speed pulling method (pulling speed: 10 cm/m1n) and baked at 150° C. for 30 minutes in a clean oven. Furthermore, the following treatment liquid (6) was used to pull up by a constant speed pulling method (pulling speed: 10 cm/min), and perfluoropolyether was applied.
処理液（５）
ポリパラバン酸樹脂 ＸＴ−４０，５ｇＴＨＦ （テト
ラヒドロフラン） ７００ｍｌＤＭＦ （ジメチ
ルフォルムアミド） ３００ｍ１処理液（６）
ＦＯＭＢＬＩＮＺＤｒＳＯＣ０，５ｇ
ダイフロンＳ−５−３ｌ００
〔実施例−４〕
実施例１と同様にして金属媒体を有するディスクを作成
した。Treatment liquid (5) Polyparabanic acid resin XT-40, 5g THF (tetrahydrofuran) 700ml DMF (dimethylformamide) 300ml Treatment liquid (6) FOMBLINZDrSOC0,5g Daiflon S-5-3l00 [Example-4] Same as Example 1 A disk with a metal medium was created.
次にマグネトロンスパッタ装置でグラファイト状の炭素
質膜を５００人形成した。次に下記処理液（７）を用い
等速引き上げ法（引き上げ速度１０ｃｍ／ｍ１ｎ）で引
き上げ、クリーンオーブン中で８０°Ｃ３０分焼成した
。更に下記処理液（８）を用い等速引き上げ法（引き上
げ速度３０ｃｍ／ｍ１ｎ）で引き上げパフロロポリエー
テルを塗布した。Next, 500 graphite-like carbonaceous films were formed using a magnetron sputtering device. Next, it was pulled up using the following treatment liquid (7) by a constant speed pulling method (pulling speed 10 cm/m1n) and baked at 80° C. for 30 minutes in a clean oven. Further, a pulled puffed fluoropolyether was applied using the following treatment liquid (8) by a constant speed pulling method (pulling speed: 30 cm/m1n).
処理液（７）
ポリパラバン酸樹脂ＸＴ−１０，５ｇ
ＴＨＦ （テトラヒドロフラン） ７００ｍｌＤ
ＭＦ （ジメチルフォルムアミド） ３００ｍ１処理
液（８）
ＦＯＭＢ Ｌ Ｉ ＮＺＤＩＳＯＣ１、０ｇダイフロン
Ｓ−５−３ｌ０００
〔比較例−１〕
実施例１に於いて処理液（１）を使用せず処理液（２）
でパーフロロポリエーテルを塗布した。Treatment liquid (7) Polyparabanic acid resin XT-10.5g THF (tetrahydrofuran) 700mlD
MF (dimethylformamide) 300ml treatment liquid (8) FOMB LI NZDISOC1, 0g Daiflon S-5-3l000 [Comparative example-1] In Example 1, treatment liquid (1) was not used and treatment liquid (2) was used.
perfluoropolyether was applied.
〔比較例−２〕
実施例２に於いて処理液（３）を使用せず処理液（４）
でパーフロロポリエーテルを塗布した。[Comparative Example-2] In Example 2, the treatment liquid (3) was not used and the treatment liquid (4) was used.
perfluoropolyether was applied.
〔比較例−３〕
実施例３に於いて処理液（５）を使用せず処理液（６）
でパーフロロポリエーテルを塗布した。[Comparative Example-3] In Example 3, the treatment liquid (5) was not used and the treatment liquid (6) was used.
perfluoropolyether was applied.
〔比較例−４〕
実施例４に於いて処理液（７）を使用せず処理液（８）
でパーフロロポリエーテルを塗布した。[Comparative example-4] In Example 4, treatment liquid (7) was not used and treatment liquid (8) was used.
perfluoropolyether was applied.
以上の実施例、比較例のディスクをＣ８Ｓ試験した。Ｃ
ＳＳ試験は、浮上ｉｏ、２０ μｍ、Ｈｖ１２００のス
ライダー材質アルミナチタンカーバイドの薄膜ヘッドを
用いてＣ８Ｓ前とＣ３８２００００回後の静摩擦係数の
測定を行った。その結果を表に示す。The disks of the above Examples and Comparative Examples were subjected to a C8S test. C
In the SS test, the static friction coefficient was measured before C8S and after C3820000 using a thin film head made of alumina titanium carbide as a slider material with a floating io of 20 μm and Hv1200. The results are shown in the table.
尚本発明は、フロッピーディスク、磁気テープ、磁気カ
ードにも適用が可能であり、基板材料はガラス、プラス
チックでも同様の効果を奏する。The present invention can also be applied to floppy disks, magnetic tapes, and magnetic cards, and the same effect can be achieved even when the substrate material is glass or plastic.
以上述べたように本発明によれば、炭素質膜上に耐摩耗
性の優れたポリパラバン酸樹脂を被服し更に管能基を末
端に有するパーフロロポリエーテルを被覆したことによ
り、硬度の高いスライダーを有する薄膜磁気ヘッドでの
Ｃ８Ｓにおいても潤滑層の剥離、飛散がなく、低摩擦係
数の維持が可能な機械的信頼性の高い磁気記録媒体の提
供が可能となった。As described above, according to the present invention, a carbonaceous film is coated with a polyparabanic acid resin having excellent abrasion resistance, and is further coated with a perfluoropolyether having a tubular functional group at the end, resulting in a slider with high hardness. It has become possible to provide a magnetic recording medium with high mechanical reliability, which does not cause peeling or scattering of the lubricant layer even in C8S with a thin film magnetic head having a thin film magnetic head, and can maintain a low coefficient of friction.
以上that's all
Claims (2)
に、炭化物および炭素の物質より成る薄膜が被覆され、
更に該薄膜にパラバン酸樹脂が被覆され、該薄膜の表面
に−ＣＯＯＨ、−ＣＨ＿２ＯＨ、−ＮＣＯ等の管能基を
両末端または片末端に有するパーフロロポリエーテルを
被覆せしめたことを特徴とする磁気記録媒体。(1) A thin film made of carbide and carbon is coated on a ferromagnetic metal thin film medium formed in the shape of a nonmagnetic substrate,
Furthermore, the thin film is coated with a parabanic acid resin, and the surface of the thin film is coated with a perfluoropolyether having functional groups such as -COOH, -CH_2OH, and -NCO at both ends or one end. magnetic recording medium.
り成る薄膜との間にＣｒ、Ｔｉ、Ｔａ、Ｎｂから選ばれ
る少なくとも１種の物質より成る被膜が形成せしめられ
た事を特徴とする第１項記載の磁気記録媒体。(2) A coating made of at least one substance selected from Cr, Ti, Ta, and Nb is formed between the ferromagnetic metal thin film medium and the thin film made of carbide and carbon substances. The magnetic recording medium according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9943288A JPH01271911A (en) | 1988-04-22 | 1988-04-22 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9943288A JPH01271911A (en) | 1988-04-22 | 1988-04-22 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01271911A true JPH01271911A (en) | 1989-10-31 |
Family
ID=14247277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9943288A Pending JPH01271911A (en) | 1988-04-22 | 1988-04-22 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01271911A (en) |
-
1988
- 1988-04-22 JP JP9943288A patent/JPH01271911A/en active Pending
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