JPH0328726B2 - - Google Patents
Info
- Publication number
- JPH0328726B2 JPH0328726B2 JP57024709A JP2470982A JPH0328726B2 JP H0328726 B2 JPH0328726 B2 JP H0328726B2 JP 57024709 A JP57024709 A JP 57024709A JP 2470982 A JP2470982 A JP 2470982A JP H0328726 B2 JPH0328726 B2 JP H0328726B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- head
- magnetic pole
- graphite
- high hardness
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Description
【発明の詳細な説明】
本発明は、垂直磁化記録用ヘツドに関し、磁性
記録媒体に接触する部分、すなわち磁性薄膜磁極
を保持した主磁極ヘツドの保持部および補助磁極
の少なくとも一方の表面部に黒鉛を高温焼成する
ことにより、その一部を炭化珪素（SiC）に転化
させた部分と、残留析出させた黒鉛(C)からなるセ
ラミツク本来の高硬度を維持しなおかつ潤滑性を
向上せしめた潤滑性高硬度領域を設けることによ
り、耐摩耗性が良好で、接触する磁性記録媒体に
損傷を与える事が少く、安定した磁気記録再生が
行える垂直磁気記録用ヘツドの提供を目的とす
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a perpendicular magnetization recording head, and the present invention relates to a head for perpendicular magnetization, in which graphite is added to the surface portion of at least one of the holding portion of the main magnetic pole head holding the magnetic thin film magnetic pole and the auxiliary magnetic pole. By firing at high temperature, a part of it is converted into silicon carbide (SiC), and the residual precipitated graphite (C) is used to maintain the original high hardness of ceramic and improve the lubricity. The object of the present invention is to provide a perpendicular magnetic recording head that has good wear resistance by providing a high hardness region, causes little damage to a magnetic recording medium in contact with it, and can perform stable magnetic recording and reproduction.
これまでは、主磁極ヘツドの磁性薄膜磁極の保
持部にはアルミナまたはガラス等の普通のセラミ
ツクが使用されており、接触する記録媒体も高分
子フイルムに磁性粉がコーテイングされたいわゆ
るソフトタイプが主であつたが、垂直磁化記録で
は高密度記録の目的に従い、Cr−Co等のメタル
磁性体をスパツタ等の方法により作成された硬質
の磁性記録媒体が使用される。従つてヘツドに対
する負荷が増大し、従来のようなアルミナ、ガラ
ス等の材質特性では摩耗量が大で特性出力の安定
化が困難でありまた摩耗の増大により磁性記録媒
体に損傷および磁気特性の劣化が生じ、寿命等信
頼性に大きな問題点があつた。また耐摩耗性の解
決のために非常に硬度の高い材料例えばサフアイ
ア等の材料を用いると、材料費が高く、加工が困
難で非常にコスト高となる等の欠点がある。 Until now, ordinary ceramics such as alumina or glass have been used for the holding part of the magnetic thin film magnetic pole of the main pole head, and the recording medium that comes into contact with it has mainly been of the so-called soft type, which is a polymer film coated with magnetic powder. However, in perpendicular magnetization recording, a hard magnetic recording medium made of metal magnetic material such as Cr-Co by sputtering or the like is used in accordance with the purpose of high-density recording. Therefore, the load on the head increases, and with conventional materials such as alumina and glass, the amount of wear is large and it is difficult to stabilize the characteristic output.The increased wear also causes damage to the magnetic recording medium and deterioration of the magnetic properties. This caused major problems with reliability, such as longevity. Furthermore, if a very hard material such as sapphire is used to improve wear resistance, there are disadvantages such as high material cost, difficulty in processing, and very high cost.
本発明は、上記従来の欠点を解消するものでセ
ラミツク本来の硬度を維持し、なおかつ良好な固
体潤滑性を有する潤滑性高硬度領域を、少なくと
も磁性記録媒体に接する磁気ヘツドの表面部もし
くは全部に作成する事により耐摩耗性が良好で摩
擦が少く磁性記録媒体に損傷を与えない垂直磁化
記録用ヘツドを提供するものであり、信頼性の高
い安定した高性能高密度垂直磁化記録を可能にし
たものである。 The present invention solves the above-mentioned conventional drawbacks by applying a lubricating high hardness region that maintains the original hardness of ceramic and also has good solid lubricity to at least the surface portion or all of the magnetic head that is in contact with the magnetic recording medium. This product provides a perpendicular magnetization recording head with good wear resistance, low friction, and no damage to the magnetic recording medium, making highly reliable, stable, high-performance, high-density perpendicular magnetization recording possible. It is something.
以下本発明の実施例を図面を参照しながら説明
する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図ａ，ｂは本発明第一実施例の主磁極ヘツ
ドを示す。必要な記録波長もしくは、機構のちが
いにより断面表面形状は第１図ａのように球面に
したり同ｂのように平面に高精度鏡面加工がほど
こされている。図において高硬度セラミツク等か
らなる本体部Ａの一部もしくは全部に潤滑性高硬
度領域Ｂを設け、その表面部を高精度に平面鏡面
加工を行い、磁化記録用磁性薄膜磁極３としてパ
ーマロイ等磁性材料をスパツタ等の方法により作
成し、同様にして作成した保持材を組立て接着す
ることにより作成する。その後記録媒体に接触す
る表面は所定の寸法及び形状に高精度鏡面加工を
行う。本発明の潤滑性高硬度領域Ｂには、通常の
セラミツク部１とその粒界に埋めこまれた固体潤
滑部２が交互に存在し、良好な潤滑性と耐摩耗性
を有する。 1a and 1b show a main pole head according to a first embodiment of the present invention. Depending on the required recording wavelength or mechanism, the cross-sectional surface shape may be spherical as shown in Figure 1a, or a flat surface with high-precision mirror finishing as shown in Figure 1b. In the figure, a lubricating high-hardness region B is provided in part or all of the main body A made of high-hardness ceramic, etc., and the surface thereof is polished to a plane mirror surface with high precision, and a magnetic thin film pole 3 for magnetization recording is made of permalloy or other magnetic material. The material is prepared by a method such as sputtering, and a holding material prepared in the same manner is assembled and bonded. Thereafter, the surface that will come into contact with the recording medium is subjected to high-precision mirror finishing to a predetermined size and shape. In the lubricious high hardness region B of the present invention, ordinary ceramic parts 1 and solid lubricant parts 2 embedded in the grain boundaries are alternately present, and have good lubricity and wear resistance.
この様な潤滑性高硬度領域Ｂの作成法及び高硬
度セラミツクとしては以下の組合せがある。 There are the following combinations of methods for creating such a lubricating high hardness region B and high hardness ceramics.
(1) 本体部Ａとしては黒鉛材料を使用し、黒鉛材
料の表面を高温に焼成しSiCに転化させ硬度強
度を向上させると共に、黒鉛単体を析出残留さ
せる事により潤滑性高硬度領域Ｂを作成する。
この時セラミツク部１はSiCであり、残留析出
した黒鉛結晶は固体潤滑剤２として作用する。(1) Graphite material is used for the main body A, and the surface of the graphite material is fired at high temperature and converted to SiC to improve hardness and strength, and a lubricating high hardness region B is created by precipitating and residual graphite. do.
At this time, the ceramic part 1 is made of SiC, and the residual precipitated graphite crystals act as a solid lubricant 2.
２ アルミナ（Al2O3），Al2O3−TiC，TiO2，フ
オルステライト非磁性フエライト，Al2O3−
Fe2O3−TiC，SiC−Siのうらのいづれかの高
硬度セラミツクを本体部Ａとし、その表面の空
孔粒界部に二硫化モリブデン，フツ素樹脂等の
固体潤滑剤２を浸透焼成する事により潤滑性高
硬度領域Ｂを作成する。2 Alumina (Al 2 O 3 ), Al 2 O 3 −TiC, TiO 2 , forsterite nonmagnetic ferrite, Al 2 O 3 −
A high-hardness ceramic made of either Fe 2 O 3 -TiC or SiC-Si is used as the main body part A, and a solid lubricant 2 such as molybdenum disulfide or fluororesin is infiltrated into the pore grain boundaries on the surface and fired. By this, a lubricating high hardness region B is created.
第２図は補助磁極ヘツドに本発明を適用した実
施例の断面図を示す。ａは表面形状が球面の場
合、ｂは平面の場合を示す。第１図と同様の方法
により作成した潤滑性高硬度領域Ｂを少なくとも
表面部に有するセラミツクを補助磁極用磁性磁心
Ｃの表面に接着して作成する。またその周囲に磁
束読み出し用コイルが所定巻数、巻線されてい
る。第３図は第１図にて説明した潤滑性高硬度領
域Ｂの顕微鏡拡大を示す。 FIG. 2 shows a sectional view of an embodiment in which the present invention is applied to an auxiliary magnetic pole head. a indicates the case where the surface shape is spherical, and b indicates the case where the surface shape is flat. Ceramic having a lubricating high hardness region B on at least its surface portion, prepared by a method similar to that shown in FIG. 1, is bonded to the surface of a magnetic core C for an auxiliary magnetic pole. Further, a magnetic flux readout coil is wound around it with a predetermined number of turns. FIG. 3 shows an enlarged microscopic view of the lubricating high hardness region B explained in FIG. 1.
図中に白く見えるのは、黒鉛がSiCに転化した
部分であり、黒い部分は残留析出した黒鉛部であ
る。図に示すごとくSiCと黒鉛部が交互に分布し
ており、この分布した状態が潤滑性及び耐摩耗性
を良好にする。又この黒鉛の分布割合が10〜30％
程度のものが特性上優れている。 What appears white in the figure is the part where graphite has been converted to SiC, and the black part is the residual precipitated graphite part. As shown in the figure, SiC and graphite parts are alternately distributed, and this distributed state improves lubricity and wear resistance. Also, the distribution ratio of this graphite is 10 to 30%.
Those with moderate characteristics are excellent in terms of characteristics.
第４図に本発明の第２の実施例を示す。図は主
磁極の場合を示し、ａは表面形状が平面の場合、
ｂは球状の場合を示す。 FIG. 4 shows a second embodiment of the invention. The figure shows the case of the main magnetic pole, where a is the case where the surface shape is flat,
b shows the case of spherical shape.
磁性薄膜磁極３を挾持する高硬度セラミツクか
らなる保持材本体部Ａの表面部にダイシング等の
機械加工または他の方法にて凹型，三角型，丸型
の溝を作成しその溝部に実施例１に説明した固体
潤滑剤２をコーテイング接着又は他の方法で固定
し、その后所定の球面もしくは平面の形状に加工
を行う。本実施例においても媒体に接触する表面
には、高硬度を維持するセラミツクと固体潤滑性
部とを交互に存在することになり実施例１と同様
の効果を有する。 Example 1: Concave, triangular, and round grooves were created by machining such as dicing or other methods on the surface of the holding material main body A made of high-hardness ceramic that clamps the magnetic thin film pole 3. The solid lubricant 2 described above is fixed by coating adhesive or other method, and then processed into a predetermined spherical or planar shape. In this embodiment as well, ceramics that maintain high hardness and solid lubricating parts are alternately present on the surface that contacts the medium, so that the same effect as in the first embodiment is obtained.
また補助磁極ヘツドについても同様の実施が可
能である。 Similar implementation is also possible for the auxiliary magnetic pole head.
すなわち磁性記録媒体に接触し、損傷を与えた
りヘツド摩耗に影響をおよぼすのは、磁性薄膜磁
極を保持し、媒体との接触面積が大であるセラミ
ツク部分であるので、垂直磁化記録用主磁極ヘツ
ドおよび補助磁極ヘツドの表面セラミツク部に高
硬度でなおかつ潤滑性能を向上させた潤滑性高硬
度領域を作成する事により耐摩耗性の良好な垂直
磁化用ヘツドとなりまた媒体とのコンタクトも良
好で高性能高密度磁気記録が信頼性良く行なえ
る。 In other words, it is the ceramic part that holds the magnetic thin film pole and has a large contact area with the medium that comes into contact with the magnetic recording medium, causing damage and affecting head wear. By creating a lubricating high hardness region with high hardness and improved lubrication performance on the surface ceramic part of the auxiliary magnetic pole head, it becomes a perpendicular magnetization head with good wear resistance and good contact with the medium and high performance. High-density magnetic recording can be performed reliably.
以上のように本発明は、垂直磁化記録用ヘツド
において磁性媒体に接触する主磁極または補助磁
極の少なくとも一方の表面部に黒鉛を高温焼成す
ることにより、その一部を炭化珪素（SiS）に転
化させた部分と、残留析出させた黒鉛(C)からなる
潤滑性高硬度領域を設けたもので、耐摩耗性の向
上を図ることができる。 As described above, the present invention is capable of converting a portion of graphite into silicon carbide (SiS) by baking graphite at a high temperature on the surface of at least one of the main pole or the auxiliary pole that contacts the magnetic medium in a perpendicular magnetization recording head. It is possible to improve wear resistance by providing a lubricating high hardness region made of residual precipitated graphite (C).
第１図ａ，ｂ、第２図ａ，ｂは本発明の一実施
例における垂直磁化記録用ヘツドの要部を示す断
面図、第３図は本発明の主磁極ヘツド表面の潤滑
性高硬度領域の顕微鏡写真、第４図ａ，ｂは本発
明の他の実施例における垂直磁化記録用ヘツドの
断面図である。
Ａ……高硬度セラミツク、Ｂ……潤滑性高硬度
領域、Ｃ……補助磁極磁心、１……セラミツク、
２……固体潤滑剤、３……主磁極薄膜磁極、４…
…SiC、５……Ｃ（残留部分）。
1a, b and 2 a, b are sectional views showing the main parts of a perpendicular magnetization recording head according to an embodiment of the present invention, and FIG. 3 is a lubricious and high hardness surface of the main pole head of the present invention 4a and 4b are cross-sectional views of a perpendicular magnetization recording head in another embodiment of the present invention. A... High hardness ceramic, B... Lubricating high hardness region, C... Auxiliary magnetic pole core, 1... Ceramic,
2...Solid lubricant, 3...Main magnetic pole thin film magnetic pole, 4...
...SiC, 5...C (residual portion).
Claims (1)
構成され、前記磁性媒体に挟持して設けられる主
磁極ヘツド、及び補助磁極ヘツドの少なくとも一
方の表面に黒鉛の一部を転化させた炭化珪素と残
留析出させた黒鉛単体からなる潤滑性高硬度領域
を設けたことを特徴とする垂直磁化記録用ヘツ
ド。1. A main magnetic pole head and an auxiliary magnetic pole head that are configured to perform magnetization recording in a direction perpendicular to the magnetic medium, and are provided with silicon carbide partially converted into graphite on the surface of at least one of the main magnetic pole head and the auxiliary magnetic pole head that are sandwiched by the magnetic medium. A perpendicular magnetization recording head characterized by having a lubricating high hardness region made of residual precipitated graphite alone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57024709A JPS58141428A (en) | 1982-02-17 | 1982-02-17 | Vertically magnetizing recording head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57024709A JPS58141428A (en) | 1982-02-17 | 1982-02-17 | Vertically magnetizing recording head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58141428A JPS58141428A (en) | 1983-08-22 |
| JPH0328726B2 true JPH0328726B2 (en) | 1991-04-22 |
Family
ID=12145697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57024709A Granted JPS58141428A (en) | 1982-02-17 | 1982-02-17 | Vertically magnetizing recording head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58141428A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5984325A (en) * | 1982-11-04 | 1984-05-16 | Kao Corp | Magnetic head of vertical magnetic recording system |
| JPH0725525B2 (en) * | 1984-02-14 | 1995-03-22 | 花王株式会社 | Molded product made of glassy carbon material |
| FR2597247B1 (en) * | 1986-04-11 | 1995-01-27 | Thomson Csf | METHOD FOR PRODUCING A MECHANICAL PROTECTION LAYER FOR A MAGNETIC RECORDING / READING HEAD AND A MAGNETIC RECORDING / READING HEAD IMPLEMENTING THIS METHOD |
| FR2611970B1 (en) * | 1987-03-06 | 1989-05-26 | Thomson Csf | METHOD FOR PRODUCING A MAGNETIC HEAD IN THIN FILMS AND APPLICATION TO A RECORDING / READING HEAD |
| US8547665B2 (en) * | 2008-01-03 | 2013-10-01 | International Business Machines Corporation | Magnetic head having a material formed in one or more recesses extending into the media support surface of at least one of the substrate and the closure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5446537A (en) * | 1977-09-21 | 1979-04-12 | Hitachi Ltd | Magnetic head |
| JPS5619518A (en) * | 1979-07-25 | 1981-02-24 | Matsushita Electric Ind Co Ltd | Magnetic head |
| JPS5619517A (en) * | 1979-07-25 | 1981-02-24 | Matsushita Electric Ind Co Ltd | Magnetic head |
| JPS5632979U (en) * | 1979-08-20 | 1981-03-31 | ||
| JPS5749724U (en) * | 1980-09-05 | 1982-03-20 | ||
| JPS58105421A (en) * | 1981-12-17 | 1983-06-23 | Seiko Epson Corp | magnetic head |
-
1982
- 1982-02-17 JP JP57024709A patent/JPS58141428A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58141428A (en) | 1983-08-22 |
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