JPS60103076A - Ceramic composition for magnetic head - Google Patents
Ceramic composition for magnetic headInfo
- Publication number
- JPS60103076A JPS60103076A JP58206707A JP20670783A JPS60103076A JP S60103076 A JPS60103076 A JP S60103076A JP 58206707 A JP58206707 A JP 58206707A JP 20670783 A JP20670783 A JP 20670783A JP S60103076 A JPS60103076 A JP S60103076A
- Authority
- JP
- Japan
- Prior art keywords
- thermal expansion
- magnetic head
- magnetic
- composition
- ceramic composition
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims description 28
- 239000000919 ceramic Substances 0.000 title claims description 8
- 229910000311 lanthanide oxide Inorganic materials 0.000 claims description 3
- 229910052747 lanthanoid Inorganic materials 0.000 claims description 2
- 150000002602 lanthanoids Chemical class 0.000 claims description 2
- 229910052573 porcelain Inorganic materials 0.000 description 17
- 239000011521 glass Substances 0.000 description 9
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- 238000005245 sintering Methods 0.000 description 6
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 description 4
- 239000011162 core material Substances 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910001035 Soft ferrite Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Magnetic Heads (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は、磁気ヘッドの描造部品に用いる非磁性拐料
に係り、コンビＪ−り簀の各１気ヘツド、狛にフロッピ
ーディスク用フ１ライト磁気ヘッドの構成に不可欠のス
ンイダーあるいはスペーサーに使用する磁気ヘッド用磁
器組成物に関づる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a non-magnetic particle used for the drawing parts of a magnetic head, and is suitable for use in the structure of a fly-light magnetic head for each one-light head of a combination J-reader, and one for a floppy disk. This invention relates to a porcelain composition for a magnetic head used as an essential sinter or spacer.
一般に磁気ヘッド番ま、Ｍｎ−Ｚｎノ１ライト、Ｎシー
ｚＴｌフェライトの磁性料お１からなるコアと非磁性飼
料からなる４ｖｉ造部品とをガラス？８るして組立−Ｃ
られており、特にデジタル用磁気ヘッドには磁性拐料と
して、高周波特性及び耐摩↓［性のりぐれたＮし一２１
フェライトに変えて心情磁率のＭｎ Ｚｎフェライトが
使用され、非磁性ＩＭ造部品）ｒＡ Ｊ”ｌには熱膨張
係数が同等のＴ’ｂＯｅ ＢａＯｊ：た【、Ｉ： ＴＬ
０２ Ｃａ Ｏ光磁器が使用されている。In general, a magnetic head is made of a core made of magnetic materials such as Mn-Zn 1 light and N-Sea ZTl ferrite, and 4VI parts made of non-magnetic feed. 8. Assembling-C
In particular, magnetic heads for digital use have high frequency properties and wear resistance as magnetic particles.
Instead of ferrite, Mn Zn ferrite with a magnetic flux is used, and non-magnetic IM parts) rA J"l have the same coefficient of thermal expansion as T'bOe BaOj: [, I: TL
02 Ca O opto-porcelain is used.
すなわち、コア材と、非磁性描込部品との熱膨張係数が
異なると、これらをガラス溶着する際に、歪を生じ、磁
気特性の劣化が起こるだけでなく、ひび、剥離等を生じ
て磁気ヘッドの組立上大きな問題となっている。In other words, if the thermal expansion coefficients of the core material and the non-magnetic drawn parts are different, distortion will occur when they are welded to glass, which will not only cause deterioration of magnetic properties but also cause cracks, peeling, etc. This poses a major problem when assembling the head.
さらに、この非磁性格造部品月料に気孔が多く存在する
と、磁気ヘッドと記録媒体との接触走行時に、記録媒体
にコーティングされた磁性粉が上記気孔に付着したり、
チッピングを生じて磁気ヘッドや記録媒体を損傷するた
め、無孔で高密度な非磁性磁器組成物が切望されている
。Furthermore, if there are many pores in this non-magnetic structural component, the magnetic powder coated on the recording medium may adhere to the pores when the magnetic head and the recording medium run in contact with each other.
Since chipping occurs and damages magnetic heads and recording media, a non-porous, high-density non-magnetic ceramic composition is desperately needed.
従来のＴ’Ｌ ０２ Ｂａ ＯまたはＴＬ ０２ Ｃａ
Ｏ系磁器組成物は、ＢａＯまたはＣａＯの量とともに
熱膨張係数が直線的に人さくなることが知られており、
上述したコア材の一−Ｚｎノエライトの熱ｊ膨張係数は
要求される電磁気特性によって定まる組成により固定さ
れるが、９０〜１２０Ｘ１０−７ ／’Ｃであるため、
非磁竹構造部品拐料の熱膨張係数をフエライ１〜の方に
合せる必要があり、熱膨張係数の差を２ｘ１０−７ ／
℃以下に抑えるべく、Ｔ＝０２５０〜７５Ｗ［％、Ｃａ
０ ２５〜５０ｗｔ％またはＴＬ０２７７〜８６Ｗ［％
、ＣａＯ１４〜２３ｗｔ％の組成からなる磁器組成物が
使用されていた。Conventional T'L 02 Ba O or TL 02 Ca
It is known that the coefficient of thermal expansion of O-based porcelain compositions decreases linearly with the amount of BaO or CaO.
The thermal expansion coefficient of Zn noelite, which is the core material mentioned above, is fixed by the composition determined by the required electromagnetic properties, and is 90 to 120X10-7/'C, so
It is necessary to match the thermal expansion coefficient of the non-porcelain bamboo structure material to that of ferrite, and the difference in thermal expansion coefficient is 2x10-7 /
In order to keep it below ℃, T=0250~75W [%, Ca
0 25~50wt% or TL0277~86W[%
, a porcelain composition having a composition of 14 to 23 wt% CaO was used.
しかしながら、従来の磁器組成物は、その焼結晶（よ難
加工性であり、そのため量産に際しζ加二Ｆ機を特殊な
ものとツるなど（・１ｊ々の問題かあった。However, conventional porcelain compositions have a sintered crystal structure (which is difficult to process), and for this reason, there have been various problems such as the need for a special ζK2F machine for mass production.
また、従来の磁器組成物（３１、溶ン；刀−ノメどのな
しみが悪く、ガラス中に気泡を化し易いという問題があ
った。In addition, the conventional porcelain composition (31, melting) had problems in that it did not stain well, and air bubbles were easily formed in the glass.
そこで、本発明者（ま、従来の磁３：（組成物の欠点を
除き、Ｍｎ Ｚｎｎフシイ１〜どバーｉ１ ／＋（、＋
の熱膨張係数を有し、結晶組織が非常に緻密でかつづぐ
れた加工性を有し、溶右ガシスとのなじみし良好な磁気
ヘッド用磁器組成物どし−（、Ｔｉｄｅ ｔ’に＋ｏ
、ＴｉＯ３−ＭｐＯ−ＣａＯ系磁器組成物を提案した（
特Ｉη１ｆｌｒゴ５８−１２５０（１０号）。Therefore, the present inventor (well, conventional magnetic 3: (excluding the drawbacks of the composition)
A porcelain composition for a magnetic head that has a thermal expansion coefficient of
proposed a TiO3-MpO-CaO ceramic composition (
Special Iη1flr Go 58-1250 (No. 10).
しかしながら、−Ｌ：１ｄの１磁器組成物は、気孔率が
０、２０〜０．３０％稈瓜あるため、（−磁気ヘッドの
１１７１密度記録化に対処し／Ｓす、スライダー月利と
じでの精密加工を施す必要から、気孔率の低減並びに加
工性の向上が不司欠であった。However, since the 1 porcelain composition with -L:1d has a porosity of 0.20 to 0.30%, it is difficult to cope with the 1171-density recording of the magnetic head. Because of the need for precision processing, it was essential to reduce porosity and improve workability.
この発明は、ＴＬ ０２ ｈ Ｏ、ＴＬｏｌ！ ｌ’ｂ
ＯＣａ Ｏ系磁器組成物の改良を目的とし、ｈｔ＋
−Ｚｎ）１ライトとＪｃ、］等の熱膨張係数を有し、結
晶組織が非常に緻密で気孔率が極めて小さく、かつ精密
加工性にすぐれ、溶着ガラスとの馴染みも良好なる磁気
ヘッド用磁器組成物を提案するものである。This invention is TL 02 h O, TLol! l'b
For the purpose of improving OCaO-based porcelain compositions, ht+
Porcelain for magnetic heads that has a coefficient of thermal expansion such as -Zn) 1 light and Jc, has a very dense crystal structure, has extremely low porosity, has excellent precision workability, and has good compatibility with welded glass. This paper proposes a composition.
すなわち、この発明は、
ＴｊＯ□ １０ｗｔ％〜９０ｗｔ％、
１’１ｇＱ １０ｗｔ％〜９０ｗｔ％からなり、ＴＬ
Ｏ２，ｌ’ｋｌ Ｏの合計を１００ｗｔ％として、Ｚｒ
Ｏ２，５ｎ０２ 、Ｂｉ２Ｏ３，Ｙ２Ｏ３、ＲＯ（ラン
タニド系の酸化物）のうち少なくとも１！！！！を５ｗ
ｔ％以下合イｊし、熱膨張係数 ９０Ｘ１０−７ ／℃
〜１２０Ｘ１０−７ ／’Ｃを有することを要旨とす
る磁気ヘッド用磁器組成物であり、ざらに、
ＴｉＯ２１０ｗｔ％〜９０ｗｔ％、
１−１ｇ０１０Ｗｊ％〜９０ｗｔ％からなり、■Ｌ０２
．ｌＩＩｇｏの合計をｉｏｏｗｔ％として、Ｃａ０２５
Ｗｊ％以下に、
１ｒｏ２．Ｓ＋＋Ｏｚ 、Ｂｉ２Ｏ３，Ｙ２ｏ３ 、Ｒ
Ｏ（ランタニド等の酸化物）のうち少なくとも１種を５
ｗｔ％以下含有し、熱膨張係数 ９０Ｘ１０−７ ／’
Ｃ〜１２０ｘ１０−７ ／℃を有することを要旨とする
磁気ヘッド用磁器組成物である。That is, this invention consists of TjO□ 10wt% to 90wt%, 1'1gQ 10wt% to 90wt%, and TL
Assuming that the total of O2, l'kl O is 100wt%, Zr
At least one of O2,5n02, Bi2O3, Y2O3, and RO (lanthanide oxide)! ! ! ! 5w
t% or less, thermal expansion coefficient 90X10-7/℃
This is a ceramic composition for a magnetic head having a temperature of ~120X10-7/'C, roughly consisting of TiO210wt%~90wt%, 1-1g010Wj%~90wt%, ■L02
．． The total of lIIgo is ioowt%, Ca025
Wj% or less, 1ro2. S++Oz, Bi2O3, Y2o3, R
At least one type of O (oxides such as lanthanides)
Contains less than wt% and has a coefficient of thermal expansion of 90X10-7/'
This is a ceramic composition for a magnetic head having a temperature of C to 120x10-7/°C.
この発明による磁：：１１成物は、熱膨張係数を９０〜
１２０Ｘ１０−７ ／’Ｃの範囲に精度よく調整するこ
と／ｌ′Ｘでき、溶着ガラスとの馴染みにすぐれ、該ガ
ラス内に気泡がほとんど発生μザ、気孔率が極めて小さ
く、すぐれた加工性を右し量り性にりぐれている特徴が
ある。The magnetic::11 composition according to the present invention has a coefficient of thermal expansion of 90 to
It can be precisely adjusted within the range of 120X10-7/'C/l'X, has excellent compatibility with the welded glass, has almost no air bubbles in the glass, has extremely low porosity, and has excellent workability. It has the characteristic of being very easy to measure.
この発明による磁器ｔ１．１成物の成分を限定したＩｌ
ｌ山ＩＪ以下のとおりて゛ある。１
ＴｉＯ２ＭｇＱ系におい（、Ｔｉｅ２１０ｗｔ％木渦、
Ｍｇ０９０ｗｔ％を越える含有では、熱膨張係数が１２
０ＸＩＯ−７／℃を越えてしまい、肯−Ｚｎ）」９ライ
トどのガラス溶着の相手飼料として不適であり、また、
焼結が困難となる。一方、ＴｉＯ２が９０Ｗ（％を超え
、ｒ′１ｇ０ １０ｗｔ％未渦の含有であると、熱膨ツ
１費係数が ９０Ｘ１０−７ ／’Ｃ未満となり、ｌｌ
ｎ −Ｚｎ）」フィトとのガラス溶るの相手月別として
不適であり、また、焼結が困難となるのＵ、ｎｎｌηｎ
ｌラフトの熱膨張係数 ９０〜１２０ｘ １０−１ ／
℃と同じ熱膨張係数を保持させて焼結性を良好とするた
め、Ｔｉ０２１０ｗｔ％〜９０ｗｔ％、ｆｆ１ｏ １０
ｗｔ％〜９０ｗｔ％の含有とする。特に、熱膨張係数が
、１０５Ｘ １０−’ ／℃程度の１１ｎ −Ｚｎフェ
ライトと適合する磁器組成物としては、Ｔｉ０２３８ｗ
ｔ％、Ｍｇｏ ６２ｗｔ％の組成のものが最適である。Il with limited components of the porcelain t1.1 product according to the invention
The following is the mountain IJ. 1 TiO2MgQ-based odor (, Tie210wt% wood whirlpool,
If the Mg content exceeds 90 wt%, the thermal expansion coefficient will be 12.
Exceeding 0XIO-7/℃, it is unsuitable as feed for any type of glass welding.
Sintering becomes difficult. On the other hand, if TiO2 exceeds 90W (%) and contains r'1g0 10wt% unvortexed, the thermal expansion coefficient becomes less than 90X10-7/'C,
U,nnlηn, which is unsuitable for glass melting with phyto-Zn), and also makes sintering difficult.
l Raft thermal expansion coefficient 90-120x 10-1 /
In order to maintain the same thermal expansion coefficient as °C and improve sinterability, Ti0210wt% to 90wt%, ff1o10
The content is from wt% to 90wt%. In particular, Ti0238w is a ceramic composition compatible with 11n-Zn ferrite whose thermal expansion coefficient is approximately 105X10-'/°C.
The optimum composition is Mgo 62wt%.
この発明の特徴であり、気孔率を低減するための添加物
である Ｚｒ０ｔ 、５ｎＯｅ 、ｅｉ２ｏ、、、Ｙ２
ｏ３゜ＲＯ（ランタニド系の酸化物）は、これらのうち
少なくとも１種を含有するが、その含有がＴＬＯ２。Zr0t, 5nOe, ei2o, , Y2, which is a feature of this invention and is an additive for reducing porosity.
o3°RO (lanthanide oxide) contains at least one of these, and its content is TLO2.
−０の合計を１００ｗｔ％として、５ｗｔ％を超える含
有では、焼結の際に、液相が多量に生成し、粒成長を促
進し、焼結後の磁器は粗大な結晶粒子を有する組織とな
り、気孔率が増大させるため、５ｗｔ％以下の８右どす
る。If the content exceeds 5 wt%, assuming that the total of -0 is 100 wt%, a large amount of liquid phase will be generated during sintering, promoting grain growth, and the porcelain after sintering will have a structure with coarse crystal grains. In order to increase the porosity, it is less than 5 wt%.
ＣａＯは、ＴＬＯ２−ｆｆｉｏ系の焼結性を改善し、磁
器を１３密度化するために添加するものであるが、その
含有がＴＬ ０２ 、 Ｃａ Ｏの合計をｉｏｏｗｔ％
として、２５Ｗ【％を超える含有では、ノエライ１〜コ
アと溶着ブーるガラス中にＣａＯが溶出してＣａＯ５Ｌ
Ｏｔ系の結晶が成長し、ガラス溶着後の加工面に残留す
る粗大化結晶は記録媒体の店動１１．′ｌに、義結晶を
脱落させる懸念があると共に月別の強度も低くなり、ソ
フトフェライトの相手ｋＡ Ｊｕ＋として不適となるた
め、ＣａＯは２５Ｗ［％以下の添加とする。また、Ｃａ
Ｏを含有したこの発明の三元系組成物では、前記１”Ｉ
ｎ −Ｚｎフェライトと適合ツるもの（ま、例えば、Ｃ
ａＯ２ｗ１％、Ｍｇｏ ５５ｗｔ％、Ｔｉ０２４５ｗｔ
％のしのか好ましい、。CaO is added to improve the sinterability of the TLO2-ffio system and make the porcelain 13 denser, but its content increases the total of TL02 and CaO by ioowt%.
If the content exceeds 25W%, CaO will be eluted into the glass welded to the core and CaO5L will be dissolved.
Ot-based crystals grow, and the coarse crystals remaining on the processed surface after glass welding are caused by the movement of the recording medium. Since there is a concern that the artificial crystal will fall off and the monthly strength will be low, making it unsuitable as a partner for soft ferrite, CaO is added in an amount of 25 W [% or less]. Also, Ca
In the ternary composition of the present invention containing O, the 1"I
Compatible with n-Zn ferrite (for example, C
aO2w1%, Mgo 55wt%, Ti0245wt
% Shinoka preferred,.
以下に、この発明を実茄例に基づいて説明り−る。The present invention will be explained below based on actual examples.
市販されている ＴＬＯ２，１’に＋Ｏ、ＣａＯ、ＢＬ
、０３゜ＺｒＯ２，５ｎ０２ 、 Ｙ ：０３ｒ ＲＯ
を用いＣ，第１表に示ブ如く、焼結後の組成かこの発明
による組成比（比１〜１７）ならびにこの発明の範囲外
及び従来の磁器組成４勿の組成比（南１８〜２４ンどな
るＪ、う手゛１′Ｍし、ボールミルで混合し、乾燥した
後、空気中で９００℃、２時間の仮焼を行った１、さら
に仮焼した原料を再びボールミル【゛平均粒度１ 、３
ｕ＋：１稈瓜になるまで、８！ｊ’Ｆｔ）砕し、次に結
合剤としてポリビニルアルコールを１．５Ｗ１．’９６
加えて造粒した。ｊｈ粒後転、：ｌ’０００ｋｇＪの成
形圧で４０ｘ ２０ｘ ２０世の寸法に成形し、第１表
の試料阻４・−８，１５〜１７．１８〜２２は空気中で
１２８０℃、２時間、他試料は空気中で１２６０’Ｃ。Commercially available TLO2,1' +O, CaO, BL
, 03゜ZrO2,5n02, Y:03r RO
As shown in Table 1, the composition after sintering is the composition ratio according to the present invention (ratio 1 to 17) and the composition ratio of porcelain composition outside the scope of this invention and the conventional porcelain composition (ratio 18 to 24). After mixing in a ball mill and drying, the calcined raw materials were calcined for 2 hours at 900°C in the air. ,3
u+: 8 until it becomes 1 culm! j'Ft) crushed, then polyvinyl alcohol was added as a binder to 1.5W1. '96
In addition, it was granulated. Samples 4-8, 15-17. , and other samples at 1260'C in air.
２時間の焼結を行った。Sintering was carried out for 2 hours.
得られた磁器について、密度、熱膨張係数、ビッカース
硬皮等の特性を調べ、第２表に測定結果を示している。The obtained porcelain was examined for properties such as density, coefficient of thermal expansion, and Vickers hard skin, and the measurement results are shown in Table 2.
また、表中の加工性は、同一の加工機を使用しその主軸
モータの電力増加量をワット単位で表わし評価している
。Furthermore, the workability in the table is evaluated by using the same processing machine and expressing the increase in power of the spindle motor in watts.
第１表、第２表から明らかな如く、試料陽１８〜２２の
比較例はその熱膨張係数力団ｎ ’ｌＴｌフェライトの
熱膨張係数 ９０〜１２０Ｘ１０−７ ／℃に合致せず
、また、試別加工性が悪く、比較例の試料Ｉｍ ２３．
２４は気孔率が高いのに対し、この発明の実施例（試料
陽１〜１７）は、気孔率が０．２０％未満と低く、かつ
熱膨張係数を ９０〜１２０Ｘ１０−７ ／℃の間にコ
ン１へロールリ゛ることができ、は械的強度、加工性等
もすぐれた特性を示しており、耐摩耗性にづ−ぐれ、記
録媒体が摺動する磁気ヘッド構造部品用材料に最適であ
ることがわかる。As is clear from Tables 1 and 2, the comparative examples of Samples No. 18 to 22 do not match the thermal expansion coefficient of 90 to 120X10-7/℃ of the thermal expansion coefficient group n'lTl ferrite. Comparative sample Im with poor processability 23.
No. 24 has a high porosity, whereas Examples of the present invention (Samples No. 1 to 17) have a low porosity of less than 0.20% and a thermal expansion coefficient of between 90 and 120X10-7/℃. It can be rolled back into the controller, has excellent properties such as mechanical strength and workability, and has excellent wear resistance, making it ideal as a material for structural parts of magnetic heads on which recording media slide. I understand that there is something.
第１表Table 1
Claims (1)
０の合「］を１１００ｗｔとして、ＺｒＯ２，５ｎＱ２
、Ｂｉ２Ｏ２，’ｒ’２ｏ３ 、ＲＯ（ランタニド系
の酸化物）のうち少なくとも１種を５ｗｔ％以下含有し
、熱膨張係数 ９０’Ｘ１０−７／°Ｃ〜１２０Ｘ１０
−７／℃を右Ｊ−ることを特徴とＪ゛る磁気ヘッド用磁
器組成物。 ２ Ｔ＊Ｏｚ １０Ｗｊ％〜９ｏＷ［％、Ｍｈ０１０ｗ
ｔ％〜９ｏｗｔ％からなり、ＴＬ ０２ 、 Ｍｉｌ
Ｏの合計を１００ｗｔ％として、Ｃａ０２５ｗｔ％以下
に、 ＺｒＯ２，５ｎ０２．８ｉ２０３．Ｙ２Ｏ３、ＲＯ（ラ
ンタニド系の酸化物）のうち少なくとも１ ｇＡを５ｗ
ｔ％以下会有し、熱膨張係数 ９０Ｘ１０−７ ／℃〜
１２０×１０−７／℃を有することを特徴とする磁気ヘ
ッド用磁器組成物。[Claims] 1 Consisting of n0210wt%~90wt%, Mg010wt%~g□wt%, TLOt, ~
If the case of 0 is 1100wt, ZrO2,5nQ2
, Bi2O2, 'r'2o3, and RO (lanthanide-based oxide) at 5 wt% or less, and has a thermal expansion coefficient of 90'X10-7/°C to 120X10.
A ceramic composition for a magnetic head, characterized in that -7/°C. 2 T*Oz 10Wj%~9oW[%, Mh010w
Consists of t% to 9wt%, TL 02, Mil
The total amount of O is 100wt%, Ca025wt% or less, ZrO2,5n02.8i203. 5w of at least 1 gA of Y2O3, RO (lanthanide oxide)
t% or less, thermal expansion coefficient 90X10-7/℃~
A ceramic composition for a magnetic head, characterized in that it has a temperature of 120 x 10-7/°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58206707A JPS60103076A (en) | 1983-11-02 | 1983-11-02 | Ceramic composition for magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58206707A JPS60103076A (en) | 1983-11-02 | 1983-11-02 | Ceramic composition for magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60103076A true JPS60103076A (en) | 1985-06-07 |
| JPS643828B2 JPS643828B2 (en) | 1989-01-23 |
Family
ID=16527781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58206707A Granted JPS60103076A (en) | 1983-11-02 | 1983-11-02 | Ceramic composition for magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60103076A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62193807A (en) * | 1986-02-14 | 1987-08-26 | ワツカ−・ケミトロニク・ゲゼルシヤフト・フユア・エレクトロニク・グルントシユトツフエ・ミツト・ベシユレンクテル・ハフツング | Multi-edged sawing machine with inner hole for sawing crystal rod and separation method executed by using said saw |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58139322A (en) * | 1982-02-10 | 1983-08-18 | Matsushita Electric Ind Co Ltd | Porcelain composition for magnetic head stopper |
-
1983
- 1983-11-02 JP JP58206707A patent/JPS60103076A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58139322A (en) * | 1982-02-10 | 1983-08-18 | Matsushita Electric Ind Co Ltd | Porcelain composition for magnetic head stopper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62193807A (en) * | 1986-02-14 | 1987-08-26 | ワツカ−・ケミトロニク・ゲゼルシヤフト・フユア・エレクトロニク・グルントシユトツフエ・ミツト・ベシユレンクテル・ハフツング | Multi-edged sawing machine with inner hole for sawing crystal rod and separation method executed by using said saw |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS643828B2 (en) | 1989-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6021940B2 (en) | Non-magnetic ceramics for magnetic heads | |
| JPS6016860A (en) | Magnetic composition for magnetic head | |
| JPS63134559A (en) | Non-magnetic ceramics for magnetic head | |
| JPS6224386B2 (en) | ||
| JPS6222946B2 (en) | ||
| JPS6222947B2 (en) | ||
| JPH0335257B2 (en) | ||
| JPS643828B2 (en) | ||
| JPS59213670A (en) | Ceramic composition for magnetic head | |
| JPS5888166A (en) | Magnetic head ceramic composition | |
| JPS59190262A (en) | Ceramic composition for magnetic head | |
| JPS63134558A (en) | Non-magnetic ceramics for magnetic head | |
| JPS59146977A (en) | Non-magnetic ceramics for magnetic head | |
| JPS6029669B2 (en) | Non-magnetic ceramics for magnetic heads | |
| JPS6222948B2 (en) | ||
| JPS59190264A (en) | Ceramic composition for magnetic head | |
| JPS5845166A (en) | Ceramic composition for magnetic head | |
| JPH0310209B2 (en) | ||
| JPS6158426B2 (en) | ||
| JPS62292672A (en) | Ceramic composition for magnetic head | |
| JPS6339115A (en) | Substrate material for thin film magnetic head | |
| JPH059056A (en) | Ceramic head for magnetic head | |
| JPH0329739B2 (en) | ||
| JPH077488B2 (en) | Non-magnetic porcelain material for magnetic head | |
| JPS6158428B2 (en) |