JPS59213672A - Non-magnetic ceramics for magnetic head - Google Patents
Non-magnetic ceramics for magnetic headInfo
- Publication number
- JPS59213672A JPS59213672A JP58239088A JP23908883A JPS59213672A JP S59213672 A JPS59213672 A JP S59213672A JP 58239088 A JP58239088 A JP 58239088A JP 23908883 A JP23908883 A JP 23908883A JP S59213672 A JPS59213672 A JP S59213672A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- thermal expansion
- ceramics
- magnetic head
- coefficient
- 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
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】
本発明は、串、子計算機等の各イ這磁気ヘッド、特にフ
ロッピーテスク用(Ni−Zn)フェライト+a気ヘッ
ドの桟成に欠(ことのできないスライダーもしくはスペ
ーサーとして使用される非磁性セラミックスに131す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention is used as a slider or spacer that is indispensable for the construction of various magnetic heads such as skewers and slave computers, especially (Ni-Zn) ferrite + a-air heads for floppy disks. It is 131 times more suitable for non-magnetic ceramics.
磁気ヘッドを製作する場合、フェライトと非磁性セラミ
ックスをガラスでボンディングを行う。When manufacturing a magnetic head, ferrite and nonmagnetic ceramics are bonded using glass.
フェライトと非磁性セラミックスの熱膨張係数が異なる
と、磁気ヘッドの組立時の熱処理において、材料に破損
を生じたり、製品に歪を残すことになり好ましくない。If the coefficients of thermal expansion of the ferrite and the nonmagnetic ceramic are different, it is undesirable because the material may be damaged or distortion may be left in the product during heat treatment during assembly of the magnetic head.
また、非磁性セラミックスに空孔が多く存在すると、例
えば磁気ヘッドとフロッピーデスク等が接触して走行す
る場合、デスクにコーティングされた磁性粉が空孔に付
着したり、チッピングのため、磁気ヘッドやフロッピー
デスフケ損傷するため、壁孔の小さいことが要求される
。In addition, if there are many holes in non-magnetic ceramics, for example, when a magnetic head and a floppy disk come into contact with each other and run, the magnetic powder coated on the disk may adhere to the holes or cause chipping, which may cause the magnetic head to Small wall holes are required to avoid floppy disk damage.
Ni−Znフェライトの熱膨張係数は25〜400℃で
、80〜100×10−7//Cと言われ、非直性セラ
ミックスの熱膨張係数もこの範囲で、任意に変化させろ
ことができ、しかも安定して製造できることが一車要で
ある。The thermal expansion coefficient of Ni-Zn ferrite is said to be 80 to 100 x 10-7//C at 25 to 400°C, and the thermal expansion coefficient of non-linear ceramics can also be changed arbitrarily within this range. Moreover, it is essential that the car be able to be manufactured stably.
従来は、例えば特公昭55−18524にみられる様に
、 Tie、(24〜52wt%)−CaCO3(27
〜60wt%% Cn02やMgOを添加して、熱j膨
張係数の調整や高密度化を行い愼械的独度の改善をはか
っている。このため熱膨張係数一つを取っても、目的の
値にあわせるための組成が複雑となっている。Conventionally, Tie, (24 to 52 wt%)-CaCO3 (27
~60wt%% Cn02 and MgO are added to adjust the thermal expansion coefficient and increase the density, thereby improving mechanical independence. For this reason, even if one coefficient of thermal expansion is taken, the composition required to adjust it to the desired value is complicated.
本発明は上記従来技術の欠点を改良し、Tie、と。The present invention improves the drawbacks of the above-mentioned prior art.
CaOとの組成比で熱膨張係数をコントロールし、。The thermal expansion coefficient is controlled by the composition ratio with CaO.
気孔率は添加物によって減少させるとともに、結晶粒の
均質化を図り、機械的な強度の改善を行っ。Additives reduce porosity, homogenize crystal grains, and improve mechanical strength.
たものである。本元明者は’I’102−CaOの状態
図からTiO2−CaO,TiOの2相女定領域では、
Cab、Tie。It is something that Based on the phase diagram of 'I'102-CaO, Akira Honmoto said that in the two-phase female constant region of TiO2-CaO, TiO,
Cab, Tie.
化合物の存在する一姪と熱膨張係数が1対1に対応する
と考えた。その裏づけン取るにあたって、従来材のバラ
ツキの原因は、TiO□やCaCo、の原料に工業的i
j、=li lff1 (〜98チ)のものを使用して
いるためと考え、99.9製綿度の原料を使用実、験倹
市した。It was considered that there is a one-to-one correspondence between the coefficient of thermal expansion and the presence of the compound. In order to confirm this, the cause of the variation in conventional materials is that the raw materials of TiO□ and CaCo are
I thought that this was because I was using a material with a cotton content of 99.9, and experimented with using raw material with a cotton content of 99.9.
また、船、”・ml悼ケ頭i、itl化する焼結助剤と
して、Sin2Mg0.ZrO2、IJ aOr S
rO等か有効であることを見出した。In addition, as a sintering aid for ship, ml, itl, Sin2Mg0.ZrO2, IJ aOr S
It was found that rO etc. are effective.
以下本非明を実施巳IVこより計速する。TiO2およ
びCaCC本は、純度99.9ヂ以上の原料を使用し、
Sin、 、MgO,ZrO2,BaO,SrO#の添
カo!r勿のt、′(!aも99.9%以上どした。試
別に、それぞれ第1辰の組成比に/、!:ろように原料
を配合し、ボールミルで湿式(J%合した。乾ρξ後、
粉砕し、アルミナ貴の箱につめて、1000〜1150
℃の温度で2〜5時mj仮焼を行った。仮焼粉は粉砕
した後、1.0〜2 、0 を廓の圧力で成形した。本
焼成は128o〜1580’Cの間で、大気中で焼結を
行った。得られた試料の密度および熱、彬張係数を泪!
(定し第、1表に示した。The speed of the present invention will be measured from the implementation example IV below. TiO2 and CaCC books use raw materials with a purity of 99.9 degrees or higher,
Addition of Sin, , MgO, ZrO2, BaO, SrO#! 99.9% or more of t,'(!a) was also recovered.Testwise, the raw materials were blended in the composition ratio of the first yen, respectively, and mixed wet (J%) in a ball mill. After drying ρξ,
Crushed and packed in alumina box, 1000~1150
mj calcination was carried out at a temperature of 2 to 5 hours. After pulverizing the calcined powder, it was molded under a pressure of 1.0 to 2.0 mm. The main firing was performed in the air at a temperature of 128° to 1580'C. Obtain the density, heat, and tensile coefficient of the sample!
(The results are shown in Table 1.
以下余白
第 1 表
表により、熱膨張係数は、TiO2の量とともに直線的
に小さくなる傾向にあり、相対ぞKはTie、とともに
大きくなる傾向を示すことがわかる。また、第1表に示
した添加物を添加しても熱膨張係数には影響がなかった
。また、添加物によって相対密度は著しく変化しなかっ
たが、結晶粒度は小さくなり、気孔も小さくなることが
わかった。Table 1 below shows that the coefficient of thermal expansion tends to decrease linearly with the amount of TiO2, and the relative coefficient K tends to increase with the amount of Tie. Furthermore, the addition of the additives shown in Table 1 did not affect the coefficient of thermal expansion. It was also found that although the relative density did not change significantly with the addition of additives, the grain size decreased and the pores also became smaller.
第1図は、TiO□のモルチと熱膨張係数の関係を示す
。図より、Ni−Znフェライトの熱膨張係数80〜I
DO(Xi O−7,/’C)と一致する範囲は、i
’ i U2か7D〜90モル条の範囲であることがあ
きらがである。本発明により、Tie、 −Ca02元
素で熱膨張係数は、’I’i02と(:aOの組成のみ
で、80〜1oo(×1〔lJ/C)の範囲で任意にか
えることができる。また5i02.ZrO3,〜Igo
、BaO,SrO等の添加物も5wt%以下であれば、
熱膨張係数をかえることなく、結晶粒度の微細化、均質
化、高密度化を図ることρ・できる。このため本発明に
よれば、従来のように、熱膨張係数を調査するために、
添加物を変える心安がな(工業上の効果は大である。FIG. 1 shows the relationship between the moltenness and thermal expansion coefficient of TiO□. From the figure, the thermal expansion coefficient of Ni-Zn ferrite is 80~I
The range that matches DO(Xi O-7,/'C) is i
'i U2 should be in the range of 7D to 90 moles. According to the present invention, the thermal expansion coefficient of Tie, -Ca02 element can be arbitrarily changed in the range of 80 to 1oo (x1 [lJ/C) only by the composition of 'I'i02 and (:aO). 5i02.ZrO3, ~Igo
, if additives such as BaO, SrO, etc. are also 5 wt% or less,
It is possible to achieve finer grain size, homogenization, and higher density without changing the coefficient of thermal expansion. Therefore, according to the present invention, in order to investigate the coefficient of thermal expansion, unlike the conventional method,
There is no need to worry about changing additives (the industrial effect is great).
第1図は、TiO2−CaO系における’I’i02の
モル%第1図
Ti、Oz の(121%
11)1、’、’II’L:、I”;bj’&]’rH
,1111(’) 乙1’l’ 磁気ヘッド用非
磁性セラミックス1山 11.′1:4 る 古
!1 ・5()8・ Ii 1’f :i′ニジ・
A f!2.(公社代 b 一層 イ、
、i !l’i’ 典 火入
」甲 人
1fii j)ミ命令の日イq 昭和59年5月29
日(発送口〕1由 11 ()) よ・1 5(
1、明細■の「発明の名称」の欄Figure 1 shows the mol% of 'I'i02 in the TiO2-CaO system.
,1111(') Otsu1'l' 1 pile of non-magnetic ceramics for magnetic head 11. '1:4 Ru old! 1 ・5()8・Ii 1'f :i' Niji・
A f! 2. (Public corporation fee b, i,
,i! l'i' Nori Hiiri
” A person 1 fii j) Mi command day iq May 29, 1981
Day (Shipping port) 1 Yu 11 ()) Yo・1 5 (
1. “Name of invention” column of specification ■
Claims (1)
50〜10 モ/l/ %よりなることを特徴とする磁
気ヘッド用非磁性セラミックス。 2、 ’f”10270〜90 モ/L/ %、Ca
050〜10−e k %を基本組成どし、Sin、
、MgQ ZrO3、BaQ SrOのなかから選ばれ
た少な(とも1イψを0.2〜4重量多添加したことを
特徴とする特許請求の範囲第1項記載の磁気ヘッド用非
磁惟セラミックス。[Claims] 1. TiO270-90-e/I/%, CaO
A non-magnetic ceramic for a magnetic head characterized by comprising 50 to 10 mo/l/%. 2. 'f'10270~90Mo/L/%, Ca
The basic composition is 050 to 10-e k %, Sin,
, MgQ ZrO 3 , and BaQ SrO, the non-magnetic ceramic for a magnetic head according to claim 1 is added with 0.2 to 4 by weight of a small amount (both 1 ψ) selected from among , MgQ ZrO 3 , and BaQ SrO.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58239088A JPS59213672A (en) | 1983-12-19 | 1983-12-19 | Non-magnetic ceramics for magnetic head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58239088A JPS59213672A (en) | 1983-12-19 | 1983-12-19 | Non-magnetic ceramics for magnetic head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59213672A true JPS59213672A (en) | 1984-12-03 |
Family
ID=17039639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58239088A Pending JPS59213672A (en) | 1983-12-19 | 1983-12-19 | Non-magnetic ceramics for magnetic head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59213672A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5296312A (en) * | 1992-01-28 | 1994-03-22 | Hitachi Metals Limited | Non-magnetic substrate material and floating-type magnetic head |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4831210A (en) * | 1971-08-25 | 1973-04-24 | ||
JPS59213611A (en) * | 1978-05-24 | 1984-12-03 | ダブリユー・アール・グレイス・アンド・カンパニー−コネチカツト | Manufacture of hydrated silicagel |
-
1983
- 1983-12-19 JP JP58239088A patent/JPS59213672A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4831210A (en) * | 1971-08-25 | 1973-04-24 | ||
JPS59213611A (en) * | 1978-05-24 | 1984-12-03 | ダブリユー・アール・グレイス・アンド・カンパニー−コネチカツト | Manufacture of hydrated silicagel |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5296312A (en) * | 1992-01-28 | 1994-03-22 | Hitachi Metals Limited | Non-magnetic substrate material and floating-type magnetic head |
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