JPS61281043A - Glass for welding of sendust - Google Patents
Glass for welding of sendustInfo
- Publication number
- JPS61281043A JPS61281043A JP11932485A JP11932485A JPS61281043A JP S61281043 A JPS61281043 A JP S61281043A JP 11932485 A JP11932485 A JP 11932485A JP 11932485 A JP11932485 A JP 11932485A JP S61281043 A JPS61281043 A JP S61281043A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- sendust
- weight
- welding
- softening point
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、新規なセンダスト溶着用ガラス、特に磁気ヘ
ッドのギャップ部を形成及び、又は補強するためのセン
ダスト溶着用ガラスに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a new sendust welding glass, particularly to a sendust welding glass for forming and/or reinforcing the gap portion of a magnetic head.
従来技術
センダストは、優れた磁気特性を存し、特に飽和磁束密
度が大きいため高密度記録に適しており、磁気ヘッド用
のコアとして広く用いられている。磁気ヘッドは、２つ
のセンダストコアのギャッ部をガラスで溶着して組み立
てるが、この時ガラスとセンダストの熱膨張係数が大き
く相違しているとガラスが冷える際、センダストに応力
が加わり、磁気特性が劣化するため、該ガラスの熱膨張
係数をセンダストに合わせて１５０〜１７０に近似させ
る必要がある。しかしながら従来より磁気ヘッドの溶着
用ガラスとして主に用いられている５ｉ０２− Ｎａ２
Ｏ系ガラス及びＰｂＯ系ガラスでは、センダストに合う
ような高膨張の溶着用ガラスを作るのは困難であった。Prior Art Sendust has excellent magnetic properties, particularly a high saturation magnetic flux density, and is therefore suitable for high-density recording, and is widely used as a core for magnetic heads. A magnetic head is assembled by welding the gap between two sendust cores with glass. At this time, if the thermal expansion coefficients of the glass and sendust are significantly different, when the glass cools, stress is applied to the sendust, causing its magnetic properties to deteriorate. Because of this, it is necessary to approximate the coefficient of thermal expansion of the glass to 150 to 170 in accordance with sendust. However, 5i02-Na2, which has traditionally been mainly used as a welding glass for magnetic heads,
With O-based glass and PbO-based glass, it is difficult to make a high expansion welding glass suitable for sendust.
発明の目的
本発明は上記の問題点を改良するために鑑みなされたも
のであり、その目的とするところは、センダストの熱膨
張係数に近似するような高膨張で、且つ熱処理する際に
センダストが劣化することのない比較的低い軟化点を育
する１８用ガラスを提供することにある。Purpose of the Invention The present invention has been made in view of the above-mentioned problems.The purpose of the present invention is to achieve a high expansion coefficient similar to that of sendust, and to reduce the thermal expansion coefficient of sendust during heat treatment. It is an object of the present invention to provide a glass for grade 18 that does not deteriorate and has a relatively low softening point.
発明の構成
本発明のセンダスト溶着用ガラスは、重量％でＰ２ｏｓ
３０〜５０１Ａ＋２０３３８〜２Ｂ、ＦｈＯｓ ６〜
１２． Ｂａ０３〜７、ＰｂＯ０〜２０、Ｎａ２ｏ十に
２０１５〜３０、Ｌｉ２ｏθ〜５からなる組成を有する
ことを特徴とする。Structure of the Invention The sendust welding glass of the present invention has a P2os
30~501A+20338~2B, FhOs 6~
12. It is characterized by having a composition consisting of Ba03-7, PbO0-20, Na2015-30, and Li2oθ-5.
また上記ガラスは、好ましくは、重量％でＰへ３５〜４
５、Ａｌ２Ｏ３１９〜２５、ＦｈＣｈ ７〜１０、Ｂａ
Ｏ２〜５、ＰｂＯ０〜１５、Ｎａｐ＋に２０１９〜２８
、Ｌｉ２００〜４からなる組成を育することを特徴とす
る。The glass preferably has a P content of 35 to 4% by weight.
5, Al2O3 19-25, FhCh 7-10, Ba
O2-5, PbO0-15, Nap+ 2019-28
, Li200-4.
本発明において上記の如（ガラスの組成範囲を限定した
理由は以下の通りである。In the present invention, the reasons for limiting the composition range of the glass as described above are as follows.
ＰＡの含量は、３０〜５０重量％、好ましくは３５〜４
５重量％である。３０重量％より少ない場合は、ガラス
が失透化し、５０重量％より多い場合は軟化点が高くな
りすぎる。The content of PA is 30-50% by weight, preferably 35-4
It is 5% by weight. If it is less than 30% by weight, the glass becomes devitrified, and if it is more than 50% by weight, the softening point becomes too high.
＾１商含量は、１８〜２６重量％、好ましくは１９〜２
５重量％である。１８重量％より少ない場合は、熱処理
する際ガラス表面が収縮し易＜、２６重量％より多い場
合は、軟化点が高くなりすぎ、熱膨張係数が所期の値よ
り小さくなる。The ^1 quotient content is 18-26% by weight, preferably 19-2
It is 5% by weight. If it is less than 18% by weight, the glass surface tends to shrink during heat treatment; if it is more than 26% by weight, the softening point becomes too high and the coefficient of thermal expansion becomes smaller than the desired value.
１１２０３含量は、６〜１２重量％、好ましくは７〜Ｉ
Ｏ重量％である。６重量％より少ない場合は、軟化点が
高（なりすぎ、１２重量％より多い場合は、熱膨張係数
が所期の値より小さくなる。11203 content is 6-12% by weight, preferably 7-I
O% by weight. When it is less than 6% by weight, the softening point becomes too high, and when it is more than 12% by weight, the coefficient of thermal expansion becomes smaller than the desired value.
ＢａＯ含量は、１〜７重量％、好ましくは２〜５重量％
である。１重量％より少ない場合は、ガラスが失透し易
くなり、？ｆｆ１ｆｆｉ％より多い場合は軟化点が高（
なりすぎる。BaO content is 1-7% by weight, preferably 2-5% by weight
It is. If it is less than 1% by weight, the glass tends to devitrify. If the amount is more than ff1ffi%, the softening point is high (
Too much.
ＰｂＯ含量は、０〜２０重量％、好ましくは０〜１５重
量％である。２０重重量より多い場合は、ガラスが失透
化する。The PbO content is between 0 and 20% by weight, preferably between 0 and 15% by weight. If the weight is more than 20 weight, the glass becomes devitrified.
Ｎａ２Ｏとに２０ハ、合量テ１５〜３０重量％、好まシ
＜ハ１９〜２８重量％含有する。１５重量％より少ない
場合は、熱膨張係数が所期の値より小さくなり、３０重
量％より多い場合は、ガラスが失透し易（なる。The total amount of Na2O is 15 to 30% by weight, preferably 19 to 28% by weight. When it is less than 15% by weight, the coefficient of thermal expansion becomes smaller than the desired value, and when it is more than 30% by weight, the glass tends to devitrify.
Ｌｉ２Ｏ含量は、０〜５重量％、好ましくは０〜４重量
％である。５重量％より多い場合は、ガラスが失透し易
くなる。The Li2O content is 0-5% by weight, preferably 0-4% by weight. If it is more than 5% by weight, the glass tends to devitrify.
実施例 以下、実施例により本発明を説明する。Example The present invention will be explained below with reference to Examples.
表は、本発明に係るガラス組成及びその特性を示したも
のである。The table shows the glass composition and its properties according to the present invention.
以下余白 表のＮａｌ〜Ｇの試料は、次のようにｍ製した。Below margin Samples Nal to G in the table were manufactured as follows.
試料点１〜６の各ガラス組成になるように各元素の酸化
物、炭酸、硝酸塩等を所定の割合に秤取し、混合して混
合原料となし、これを例えば白金ルツボを用いて１１０
０’Ｃにて溶融、清燈、撹拌し、均−化した後、白金ル
ツボより取り出し徐冷する。得られたガラスについて熱
膨張係数を測定した。Oxides, carbonates, nitrates, etc. of each element are weighed out in predetermined proportions so as to have the respective glass compositions of sample points 1 to 6, and mixed to form a mixed raw material.
After melting at 0'C, lighting, stirring, and homogenization, the mixture was taken out from the platinum crucible and slowly cooled. The thermal expansion coefficient of the obtained glass was measured.
この結果、試料陰１〜Ｇのガラスは熱膨張係数が１５０
〜１６８Ｘ １０−／”Ｃの範囲にあり、センダストの
熱膨張係数である１５０〜１７０Ｘ １０”ｑ／−Ｃに
近似していることがわかる。また軟化点についても４９
０℃以下と比較的低いことがわかる。As a result, the thermal expansion coefficient of the glass samples 1 to G was 150.
It can be seen that the coefficient of thermal expansion is in the range of ~168X 10-/''C, which is close to Sendust's thermal expansion coefficient of 150-170X 10''q/-C. Also, the softening point is 49
It can be seen that the temperature is relatively low, below 0°C.
発明の効果
以上の如く本発明のセンダスト溶着用ガラスは、熱膨張
係数がセンダストのそれと近似し、且つ軟化点も比較的
低いため、センダストの磁気特性を劣下することがな（
、特にセンダストコアを存する磁気ヘッドのギャップ部
を溶着及び、又は補強するのに適している。As described above, the sendust welding glass of the present invention has a coefficient of thermal expansion close to that of sendust and a relatively low softening point, so it does not deteriorate the magnetic properties of sendust.
It is particularly suitable for welding and/or reinforcing the gap portion of a magnetic head containing a sendust core.
Claims (2)
Ｏ＿３ １８〜２６、Ｂ＿２Ｏ＿３ ６〜１２、ＢａＯ
１〜７、ＰｂＯ ０〜２０、Ｎａ＿２Ｏ＋Ｋ＿２Ｏ
１５〜３０、Ｌｉ＿２Ｏ ０〜５からなる組成を有する
ことを特徴とするセンダスト溶着用ガラス。(1) In weight%, P_2O_3 30-50, Al_2
O_3 18-26, B_2O_3 6-12, BaO
1-7, PbO 0-20, Na_2O+K_2O
15 to 30 and Li_2O 0 to 5.
＿３ １９〜２５、Ｂ＿２Ｏ＿３ ７〜１０、ＢａＯ
２〜５、ＰｂＯ ０〜１５、Ｎａ＿２Ｏ＋Ｋ＿２Ｏ １
９〜２８、Ｌｉ＿２Ｏ ０〜４からなる組成を有するこ
とを特徴とする特許請求の範囲第１項記載のセンダスト
溶着用ガラス。(2) P_2O_5 35-45, Al_2O in weight%
_3 19-25, B_2O_3 7-10, BaO
2-5, PbO 0-15, Na_2O+K_2O 1
9-28, Li_2O 0-4, the sendust welding glass according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11932485A JPS61281043A (en) | 1985-05-31 | 1985-05-31 | Glass for welding of sendust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11932485A JPS61281043A (en) | 1985-05-31 | 1985-05-31 | Glass for welding of sendust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61281043A true JPS61281043A (en) | 1986-12-11 |
| JPH028979B2 JPH028979B2 (en) | 1990-02-28 |
Family
ID=14758643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11932485A Granted JPS61281043A (en) | 1985-05-31 | 1985-05-31 | Glass for welding of sendust |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61281043A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1167310A1 (en) * | 2000-06-28 | 2002-01-02 | Ferro France S.A.R.L. | Enamel composition |
| US20120035043A1 (en) * | 2009-05-13 | 2012-02-09 | Asahi Glass Company, Limited | Cover glass for solid-state imaging element package |
| US10427973B2 (en) | 2015-09-28 | 2019-10-01 | Ferro Corporation | Pyrolytic hybrid enamel |
-
1985
- 1985-05-31 JP JP11932485A patent/JPS61281043A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1167310A1 (en) * | 2000-06-28 | 2002-01-02 | Ferro France S.A.R.L. | Enamel composition |
| WO2002002471A1 (en) * | 2000-06-28 | 2002-01-10 | Ferro France - S.A.R.L. | Enamel composition |
| US20120035043A1 (en) * | 2009-05-13 | 2012-02-09 | Asahi Glass Company, Limited | Cover glass for solid-state imaging element package |
| CN102422418A (en) * | 2009-05-13 | 2012-04-18 | 旭硝子株式会社 | Cover glass for a solid-state imaging element package |
| US8211816B2 (en) * | 2009-05-13 | 2012-07-03 | Asahi Glass Company, Limited | Cover glass for solid-state imaging element package |
| US10427973B2 (en) | 2015-09-28 | 2019-10-01 | Ferro Corporation | Pyrolytic hybrid enamel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH028979B2 (en) | 1990-02-28 |
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