JPS5945636A - Formation of surface lubricating film on magnetic recording medium - Google Patents
Formation of surface lubricating film on magnetic recording mediumInfo
- Publication number
- JPS5945636A JPS5945636A JP57154117A JP15411782A JPS5945636A JP S5945636 A JPS5945636 A JP S5945636A JP 57154117 A JP57154117 A JP 57154117A JP 15411782 A JP15411782 A JP 15411782A JP S5945636 A JPS5945636 A JP S5945636A
- Authority
- JP
- Japan
- Prior art keywords
- film
- metal
- magnetic recording
- recording medium
- magnetic
- 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
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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/72—Protective coatings, e.g. anti-static or antifriction
- G11B5/725—Protective coatings, e.g. anti-static or antifriction containing a lubricant, e.g. organic compounds
-
- 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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/72—Protective coatings, e.g. anti-static or antifriction
- G11B5/726—Two or more protective coatings
Abstract
Description
【発明の詳細な説明】
（ａ） 発明の技術分野
本発明は磁気記録媒体の表面潤滑膜の形成方法の改良に
関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to an improvement in a method for forming a surface lubricating film on a magnetic recording medium.
（ｂ） 技術の背景
磁性体膜を形成した磁気記録円板を高速に回転させて、
その高速に円板を回転させることによって生じる空気流
によって、該記録円板上に設置している磁気ヘッドと円
板との１７＋Ｊ ＠を所定の値に保ち、・清報の書き込
み、読み出しを行う磁気ディスク装置はすでに同月１で
ある。(b) Background of the technology A magnetic recording disk on which a magnetic film is formed is rotated at high speed.
The air flow generated by rotating the disk at high speed keeps the 17+J@ between the magnetic head installed on the recording disk and the disk at a predetermined value, and writes and reads information. The magnetic disk drive is already number 1 of the same month.
ところでこの記録円板を回転および停止させるのに、磁
気ヘッドを記録円板上に接触して、上記回転および停止
の動作をさせる、いわゆるコンタクト、スタート、スト
ップ（０，８，８）方式が通常用いられている。By the way, in order to rotate and stop this recording disk, the so-called contact, start, stop (0, 8, 8) method is usually used, in which a magnetic head is brought into contact with the recording disk and the rotation and stopping operations are performed. It is used.
し力）しこのような方式では、記録円板が回転を停止す
るまで、また記録円板が回転してから磁気ヘッドが浮上
するまでのＩｆｌｆ Ｓ磁気ヘッドが記録円板上を引き
ずって移動する形となり、そのため記録円板上の磁性体
膜が損傷したり摩耗したりする不都合を生じる。In this type of system, the magnetic head drags over the recording disk until the recording disk stops rotating, and after the recording disk rotates until the magnetic head floats. This causes problems such as damage or wear of the magnetic film on the recording disk.
このような磁性体膜がメッキや蒸着、あるいはスパッタ
法で形成される場合には、磁性体膜あるいはその上に形
成した保護膜の衣１ｒｔｉに潤滑剤を塗布する方法がと
られている。When such a magnetic film is formed by plating, vapor deposition, or sputtering, a method is used in which a lubricant is applied to the magnetic film or to the coating 1rti of the protective film formed thereon.
（Ｃ） 従来技術と間頗点
従来このような潤滑膜を形成する方法として、例えばシ
リ、コンオイル等の液体潤滑剤やパルミチン酸等の關級
脂肪酸や該脂肪酸のエステルや固形パラフィン等の固体
潤滑剤を塗布する方法がとられている。(C) Differences between conventional technology and conventional methods for forming such a lubricating film include liquid lubricants such as silicone and con-oil, major fatty acids such as palmitic acid, esters of these fatty acids, and solids such as solid paraffin. A method of applying lubricant is used.
ところで＋ｊｉＪ記尚級脂肪酸やそのエステルからなる
潤滑剤を塗布した場合、該潤滑剤を塗布した磁気記録媒
体を有する磁気ディスクに磁気ヘッドがＩ滑剤を溶解す
る溶剤が使用中にじみ出て吸着される吸着現象が生じた
り、また後者のＩＩ！＋１体向屑剤体向融剤の低いもの
が多いため、例えば密封４７１１造の磁気ディスク装置
の如き装置の内ｊ′Ｊｌｔの温１見が使用中に（７）°
Ｃ以上にも上昇する場合には、耐熱性か悪く実用になら
ないといった欠点を生じる。By the way, when a lubricant made of a fatty acid or its ester is applied, the solvent that dissolves the lubricant oozes out during use and is adsorbed when the magnetic head is applied to a magnetic disk having a magnetic recording medium coated with the lubricant. The phenomenon occurs, and the latter II! Since there are many products with a low flux-directing agent, for example, the temperature of j'Jlt in a device such as a sealed 4711 magnetic disk drive is (7)° during use.
If the temperature rises above C, there will be a drawback that the heat resistance will be poor and it will not be practical.
また耐熱性の良い融点の高いパラフィンのような固体の
ＨｆＨ剤を／４ｊいると磁気ヘッドの磁気ディスクに対
する摩擦が増大して、実用的でない。Furthermore, if a solid HfH agent such as paraffin with good heat resistance and a high melting point is used, the friction of the magnetic head against the magnetic disk will increase, making it impractical.
（ｄ） 発明の目的
本発明は上述した欠点を除失し、固体祠滑剤としての脂
肪酸あるいは該脂肪酸エステルを用い、磁性体の上にあ
ら力・しめ形成した金１・４または金属化合物膜よりな
る反すぶ層と前記Ｉ滑剤とを反応させ、もって形成され
る＋Ｉ＃ ｆ＃映の融点を向上させて耐熱性を向上式せ
、かつ該潤滑膜を有する磁気ディスクと磁気ヘッドが吸
着しないような新規な磁気記＠を媒体のａ！１：＋＋旧
ｌ−１滑膜の形成力法の提供を目的とするものである。(d) Purpose of the Invention The present invention eliminates the above-mentioned drawbacks, and uses fatty acids or fatty acid esters as a solid abrasive agent to form a gold 1, 4 or metal compound film on a magnetic material. The lubricant is made to react with the lubricant to improve the melting point of the +I# f# film that is formed, thereby improving the heat resistance, and the magnetic disk and magnetic head having the lubricant film are not attracted to each other. A new magnetic record such as @ media a! 1:++ The purpose of this study is to provide a method for forming the synovial membrane.
（ｅ） 発明の構成
か力）るＩＩ的を達成するだめの本発明の磁気記録媒体
の表面前滑膜の形成方法は、磁気記録媒体の表面に金属
または、金属化合物膜を形成し、該金属または金属化合
物膜上に脂肪酸または脂肪酸エステルよりなる潤滑膜を
塗布し、該潤滑膜と…ｊ記金金属たは金属化合物膜とを
反応はせることで生成した潤滑膜の金属塩を前記潤滑ｊ
ｊＱ上に形成したことを特徴とするものである。ここで
前記金属、または金属化合物膜の構成元素としてはＡｌ
ｔ ’ｌ’ ＋ 。(e) A method for forming a synovial film on the surface of a magnetic recording medium according to the present invention, which achieves the second objective, comprises forming a metal or metal compound film on the surface of a magnetic recording medium, A lubricating film made of a fatty acid or fatty acid ester is applied on a metal or metal compound film, and the lubricating film is reacted with the gold metal or metal compound film.The metal salt of the lubricating film is used as the lubricant. j
It is characterized in that it is formed on jQ. Here, the constituent element of the metal or metal compound film is Al.
t 'l' +.
Ｏｒ 、Ｆｅ 、Ｏｏ 、Ｎｉ ＋Ｏｕ 、Ｚｎ 、Ｍ
ｏ ＋Ｓｎ 、Ｚｒ 、Ｐｂ 。Or, Fe, Oo, Ni+Ou, Zn, M
o + Sn, Zr, Pb.
Ｔａ、Ｗ、Ａｇ等のうちいずれ力）の元素、または上記
元素のうちで２つ以上組み合せて用いたことを特徴とす
るものである。It is characterized by using an element (any one of Ta, W, Ag, etc.) or a combination of two or more of the above elements.
（ｆ） 発明の実施例
以下本発明の一実施例につき図面を用いて１１１・細に
説明する。(f) Embodiment of the Invention An embodiment of the invention will be described below in detail with reference to the drawings.
第１図は本発明の磁気記録媒体：ｂ、１…の１１４滑膜
の形成方法を用いた磁気ディスクのＩＭ ｌｌｌ１図、
ＭＳ２図は該τ関滑膜のル成状態の検査方法の澗明図で
ある。FIG. 1 is an IM diagram of a magnetic disk using the 114 synovial membrane formation method of the magnetic recording medium of the present invention: b, 1...
The MS2 diagram is a clear diagram of the method for inspecting the state of the tau synovial membrane.
第１図に示すようにセラミックよりなる基板上にはコバ
ルトニッケル（Ｏｏ−Ｎｉ）よりなる磁性体膜２が電解
メッキにより形成されており、その上に保護膜としての
二酸化硅素（ＳｉＯｚｌｌ矢３がスパッタ法により形成
されている。As shown in Fig. 1, a magnetic film 2 made of cobalt nickel (Oo-Ni) is formed on a substrate made of ceramic by electrolytic plating, and silicon dioxide (SiOzll arrow 3) is deposited on top of it as a protective film. It is formed by a sputtering method.
このような磁性体膜２、保護膜３を有する基板上に、後
の 程で形成する潤滑膜の反応層４となるものをＴｉｓ
’４化チタン（ＴｉＮ）、二酸化チタン（り法を用いて
所定の工１１さに形成する。On the substrate having such a magnetic film 2 and a protective film 3, a layer that will become a reaction layer 4 of a lubricant film to be formed later is formed using Tis.
'Titanium tetraoxide (TiN) and titanium dioxide (titanium dioxide) are formed into a predetermined shape 11 using a lithography method.
その後該反１＋ｉ、ｉ層４上に脂肪酸の一種であるベヘ
ン酸（ＯＢ、３ （Ｏ１ｉ２）２ｏＣｏｏＨ，、融点約
８０”Ｃ）５を、加熱溶融して吸着する。次いで該基板
を（資）°Ｃに赤外線加熱ヒータを用いて加熱して溶融
する。このようにすると該ベヘン酸と反応層とが反応し
て金属塩よりなる祠ｆＮ膜が形成される。Thereafter, behenic acid (OB, 3 (O1i2)2oCooH, melting point: approximately 80"C), which is a type of fatty acid, is adsorbed onto the anti-1+i, i-layer 4 by heating and melting it. The behenic acid is heated and melted using an infrared heater at 0.degree. C. In this way, the behenic acid and the reaction layer react to form a fN film made of a metal salt.
ここで前述した反応層としてＴｉをスパッタしたものを
選ぶとベヘン酸と反ルれ；してベヘン酸チタニウム（Ｏ
Ｈ３００Ｈ２）ｚｏｏｏｏＴｉ）が得られ、基板の方向
にＣｏ ｏＴ ｉ基が付着し、潤滑膜の表面側には跡水
基であるメチル基（ＣＨａ）が向くような配向性を示し
て上記潤滑膜が得られ、このため表面エネルギーが低下
して摩擦係数が低下する。If a Ti sputtered layer is selected as the reaction layer mentioned above, it will react with behenic acid; titanium behenate (O
H300H2)zooooTi) is obtained, and the above lubricant film exhibits an orientation such that the CooTi group is attached in the direction of the substrate, and the methyl group (CHa), which is a residual water group, is directed to the surface side of the lubricant film. This results in a lower surface energy and lower coefficient of friction.
潤滑剤の付着している状態を測定する方法として例えば
このような金属塩よりなさ１１ｍ股を杉１１し１イシ・
、該７１・ｌ滑り俣上に第２図に示すように水滴１１を
γ丙ドする。そして該Ｉｌｌ成膜表面と水滴１１との接
触角０を角度測定オｉｉ（’こて検証する。For example, a method of measuring the state of adhesion of lubricant is to measure an 11-m length of cedar made of metal salt.
As shown in FIG. 2, water droplets 11 are gamma-dropped onto the 71·l sliding platform. Then, the contact angle between the Ill film-formed surface and the water droplet 11 is 0 by angle measurement.
ここで第１衣に反応層の金民射よひりし、風化合物をｐ
ｈ々欧化させた場合において、その上Ｖこ４〈発明の方
法によって形成した閥〆丘膜のト“、ｌ８ｆｊ、係数と
ｊ＆゛触て
角度を示ず。また反１）れ： ＪｆＪの代わりＱこ筒：
、、！３！！バ・１とし茫のＳ！０２１侯」二に上述し
た方法で簡＋′＃側を形成し、ｒの上に滴下県た水滴で
水滴と潤滑膜の間の接触再を測定した例を第１表に示す
。At this point, apply the reaction layer to the first layer and add the wind compound.
In the case of Europeanization, in addition, V 4〈T'', l8fj, coefficient and j&゛of the convex membrane formed by the method of the invention, the angle is not shown.Also, the angle is not shown. Q tube:
,,! 3! ! Ba.1 Toshisuke's S! Table 1 shows an example in which the contact between the water droplet and the lubricant film was measured using a water droplet that was formed on the surface by the method described above and dropped on the surface.
第１表 下地１ｖ−と摩擦係数、接触角との関係を示す
衣用１表より解るように金属またはイ止１・ｊ６の窒化
物、あるいは金属の酸化物を反１心層として設けた化合
、その」二に形成する潤滑膜の摩擦係−々か例えは従来
の方法のようにＳｉＯ２よりなる保勃股上ｒ（潤滑膜を
形成する場合に比して低ドしている。また接触角も９０
°以上といずれも増大しており潤滑膜が配向し、表面エ
ネルギーが低下していることが解る。Table 1: As can be seen from Table 1, which shows the relationship between the base layer 1v-, friction coefficient, and contact angle, there are compounds in which metals, nitrides of 1 and 1, and 6 or oxides of metals are provided as an anti-unilateral layer. Second, the friction coefficient of the lubricant film formed on the second surface is lower than that in the case of forming a lubricant film made of SiO2 as in the conventional method. Also 90
It can be seen that the lubricant film is oriented and the surface energy is lowered because it increases as the value exceeds 100°C.
またこのようにして形成した潤滑膜を有する磁気ディス
クにおいては磁気ヘッドが走行中潤滑膜へ吸着するよう
な現象もみられなくなった。Furthermore, in the magnetic disk having the lubricant film formed in this manner, the phenomenon in which the magnetic head was attracted to the lubricant film during running was no longer observed.
また磁気ディスクが走行してディスク表面の温度が１０
０’Ｃになった場合でも潤滑膜には侮辱変化は見られず
耐熱性が向上したため密封構造の磁気ディスク装置でも
充分使用に耐え得ることが判明した。Also, as the magnetic disk runs, the temperature of the disk surface increases to 10
Even when the temperature reached 0'C, no change was observed in the lubricating film and the heat resistance was improved, so it was found that even magnetic disk devices with a sealed structure could withstand use.
このような閥滑１］−３の厚ばは（資）へ以上の厚さで
あれば充分実用Ｋ １ｌｌｌｉえる。また厚さの範囲と
しては上限はｔｏｏｏ八であっても良いが磁気ヘッドと
記録媒体とのスペーソングロスを小さくする必要から実
用上は５００八以下の厚さが好ましく、摩耗、吸着の意
力）ら考えて（資）人より２００への範囲の厚さが好ま
しい。If the thickness of such a mat 1]-3 is at least 100 mm thick, it will be sufficient for practical use. In addition, the upper limit of the thickness range may be too much, but it is practically preferable to have a thickness of 500 or less because it is necessary to reduce the spason gloss between the magnetic head and the recording medium. ), a thickness in the range from 200 to 200 is preferred.
以上述べた実１ｊｉｉｉ例の他に反応膜をスパッタリン
グ以外の蒸着やメッキ方法で形成しても良い。In addition to the above-mentioned example, the reaction film may be formed by a vapor deposition or plating method other than sputtering.
また使用する金属または金属化合物を形成する元＃、Ｃ
ま第１表に示したようにｃｕＳＱｒ＋Ａ、Ｊ等のような
脂肪酸と反応して金属塩を形成する元業であればよい。In addition, #, C, which forms the metal or metal compound used
Alternatively, as shown in Table 1, any material that reacts with fatty acids to form metal salts such as cuSQr+A, J, etc. may be used.
したがって上記の他ＫＦｅ、Ｃｏ、ＮＩ。Therefore, in addition to the above, KFe, Co, and NI.
Ｚｎ ＩＭＯＩ Ｓｎ ｌＰｂ 、’ｒａ 、Ｗ、Ａｇ
ｇ）の金属またｔまこれらの金属化合物でも良い。Zn IMOI Sn lPb,'ra,W,Ag
The metal (g) or a compound of these metals may be used.
また本実施例として磁気記録媒体としてはイガ′１／ト
体膜をメッキして形成したメッキティスフを用いたがこ
の他γ−Ｆ ｅ Ｑ ３膜を基板にスパッタしたスパッ
タディ、スフ、またはＣｏ−０ｒ膜をスパッタ等で形成
した垂直磁気記録媒体、または的性体ｊ戻を蒸着したオ
ーディオテープ等の場合に本発明の油滑膜形成方法が適
用可能である。In addition, as the magnetic recording medium in this embodiment, a plating film formed by plating a γ-F e Q 3 film on a substrate was used. The oil synovial film forming method of the present invention can be applied to perpendicular magnetic recording media on which a 0r film is formed by sputtering or the like, or audio tapes on which a target material is deposited by vapor deposition.
また本実施例ではベヘン酸を高級１１ｉ′ｊ肋戯として
潤滑材として用いたがその他バルミチン版、ステアリン
酸等の高級脂肪酸あるいは該１ｊば肪酸エステルをＩ′
ｌ’Ｍ ｆｉ７剤として用いても良い。Furthermore, in this example, behenic acid was used as a lubricant as a higher 11i'j ester, but other than that, higher fatty acids such as valmitic acid, stearic acid, or the 1j fatty acid ester could be used as a lubricant.
It may also be used as a l'M fi7 agent.
（ｇ） 発明の効果
以上述べたように本発明の磁気記録媒体の表１１１１潤
滑膜の形成方法によれば、低水銀で吸着音４１−じない
耐熱性の向上した簡滑膜７２Ｍ？成され、仁のような潤
滑膜を用いると磁気ディスクか伎ＮｌＩｎとなり信頼度
も向上する利点を生じる。(g) Effects of the Invention As described above, according to the method for forming the lubricating film of the magnetic recording medium of the present invention, the lubricating film 72M is low in mercury, has no adsorption noise, and has improved heat resistance. If a lubricating film such as Ni is used, the magnetic disk becomes more stable, which has the advantage of improving reliability.
＠１図の本発明の磁気記録媒１４．表＋ｕノの潤滑膜の
形成方法を用いたイみ気ディスクのｉｊ＋ ｔｒｔＨ図
、第２図は該潤滑膜の形成状態の検査方法の、ｉ９９膜
である。
図においてｌは基板、２は磁性体側、８は保護膜、４は
反応層、５は潤滑膜、１１は水滴、０は接触角を示す。Magnetic recording medium 14 of the present invention in Figure @1. The ij+trtH diagram of the infiltrated disk using the lubricant film forming method shown in Table +U, and FIG. 2 show the i99 film of the lubricant film forming state inspection method. In the figure, 1 is the substrate, 2 is the magnetic material side, 8 is the protective film, 4 is the reaction layer, 5 is the lubricating film, 11 is the water droplet, and 0 is the contact angle.
Claims (2)
６化合物膜を形成し、該金属または金ＡＩＫ化合物膜上
に脂肪酸または脂肪酸エステルよりなる簡＃膜を塗布し
、該潤滑膜と前記金属または金属化合物膜とを反応させ
ることで生成した潤滑膜の金ｈ’ＸＡ塩をｎｅｔ記潤滑
膜上に形成したことを！Ｉイ徴とする磁気記録媒体の表
面潤滑膜の形成方法。(1) Metal or gold 1.1 on the surface of magnetic recording 1 medium
A lubricant film produced by forming a 6 compound film, applying a simple film made of fatty acid or fatty acid ester on the metal or gold AIK compound film, and reacting the lubricant film with the metal or metal compound film. Gold h'XA salt was formed on the net lubricating film! A method for forming a lubricating film on the surface of a magnetic recording medium.
成Ｊし素とｌし してア４ミニウム（Ａｄ ）、チタン（１＋ｉ）、クロ
ム（Ｏｒ ）、鉄（Ｆｅ）、コバルト（ＣＯ）、ニッケ
ル（ＮＩ）銅（Ｏｕ ）、亜鉛（Ｚｎ ）、モリブテン
（ＭＯ）、錫（Ｓｎ）ジルコニウム（Ｚｒ）、鉛（Ｐｂ
）、タンクｋ （’ｌ’ａ ）タングステン（Ｗ）、銀
（Ａｇ ）、のうちのいずれ力〕の元素あるいは上記元
素のうちで２つ以上組み合せて用いたことを特徴とする
特許ｍ求の範囲第（１）項に記載の磁気記録媒体の表面
潤滑膜の形成方法。(2) iiJ metal or metal compound Il! of Hη
Aluminum (Ad), titanium (1+i), chromium (Or), iron (Fe), cobalt (CO), nickel (NI), copper (Ou), zinc (Zn), Molybdenum (MO), tin (Sn), zirconium (Zr), lead (Pb)
), tank k ('l'a) tungsten (W), silver (Ag)), or a combination of two or more of the above elements. A method for forming a surface lubricant film on a magnetic recording medium according to scope (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57154117A JPS5945636A (en) | 1982-09-03 | 1982-09-03 | Formation of surface lubricating film on magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57154117A JPS5945636A (en) | 1982-09-03 | 1982-09-03 | Formation of surface lubricating film on magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5945636A true JPS5945636A (en) | 1984-03-14 |
Family
ID=15577290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57154117A Pending JPS5945636A (en) | 1982-09-03 | 1982-09-03 | Formation of surface lubricating film on magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5945636A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6148119A (en) * | 1984-08-14 | 1986-03-08 | Fuji Photo Film Co Ltd | Magnetic recording medium |
| JPS6242316A (en) * | 1985-08-20 | 1987-02-24 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic disk medium |
| JPH01287000A (en) * | 1988-05-13 | 1989-11-17 | Honda Motor Co Ltd | Production of silicon carbide whisker |
| US5374391A (en) * | 1990-02-13 | 1994-12-20 | Honda Giken Kogyo Kabushiki Kaisha | Molded ceramic articles and production method thereof |
| US5443615A (en) * | 1991-02-08 | 1995-08-22 | Honda Giken Kogyo Kabushiki Kaisha | Molded ceramic articles |
| US8687323B2 (en) | 2011-10-12 | 2014-04-01 | HGST Netherlands B.V. | Magnetic media disk anticorrosion overcoat with titanium and silicon based layers |
-
1982
- 1982-09-03 JP JP57154117A patent/JPS5945636A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6148119A (en) * | 1984-08-14 | 1986-03-08 | Fuji Photo Film Co Ltd | Magnetic recording medium |
| JPS6242316A (en) * | 1985-08-20 | 1987-02-24 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic disk medium |
| JPH01287000A (en) * | 1988-05-13 | 1989-11-17 | Honda Motor Co Ltd | Production of silicon carbide whisker |
| US5374391A (en) * | 1990-02-13 | 1994-12-20 | Honda Giken Kogyo Kabushiki Kaisha | Molded ceramic articles and production method thereof |
| US5590388A (en) * | 1990-02-13 | 1996-12-31 | Honda Giken Kogyo Kabushiki Kaisha | Molded ceramic articles and production method thereof |
| US5443615A (en) * | 1991-02-08 | 1995-08-22 | Honda Giken Kogyo Kabushiki Kaisha | Molded ceramic articles |
| US8687323B2 (en) | 2011-10-12 | 2014-04-01 | HGST Netherlands B.V. | Magnetic media disk anticorrosion overcoat with titanium and silicon based layers |
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