JPH0446029A - Glass composition for welding - Google Patents
Glass composition for weldingInfo
- Publication number
- JPH0446029A JPH0446029A JP15806890A JP15806890A JPH0446029A JP H0446029 A JPH0446029 A JP H0446029A JP 15806890 A JP15806890 A JP 15806890A JP 15806890 A JP15806890 A JP 15806890A JP H0446029 A JPH0446029 A JP H0446029A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- welding
- weight
- glass composition
- 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
- 239000011521 glass Substances 0.000 title claims abstract description 35
- 239000000203 mixture Substances 0.000 title claims abstract description 20
- 238000003466 welding Methods 0.000 title claims abstract description 20
- 230000006911 nucleation Effects 0.000 abstract description 4
- 238000010899 nucleation Methods 0.000 abstract description 4
- 230000008646 thermal stress Effects 0.000 abstract description 4
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052593 corundum Inorganic materials 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- 229910011255 B2O3 Inorganic materials 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- -1 Tl2O Inorganic materials 0.000 abstract 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N lead(II) oxide Inorganic materials [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 abstract 1
- NOTVAPJNGZMVSD-UHFFFAOYSA-N potassium monoxide Inorganic materials [K]O[K] NOTVAPJNGZMVSD-UHFFFAOYSA-N 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 12
- 239000000956 alloy Substances 0.000 description 12
- 239000010409 thin film Substances 0.000 description 10
- 239000000758 substrate Substances 0.000 description 6
- 239000000696 magnetic material Substances 0.000 description 5
- 230000005389 magnetism Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000005355 lead glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910000702 sendust Inorganic materials 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野］
本発明は、磁気ヘッド等の空隙部に充填され比較的低温
にて溶着処理が可能な溶着用ガラス組成物に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a welding glass composition that can be filled into a gap in a magnetic head or the like and can be welded at a relatively low temperature.
近年、ビデオテープレコーダ等の磁気記録再生装置には
高密度の記録再生機能が要求され、これに伴い、磁気ヘ
ッドも、高密度記録再生を行い得るものが求められてい
る。In recent years, magnetic recording and reproducing devices such as video tape recorders are required to have a high-density recording and reproducing function, and accordingly, magnetic heads that can perform high-density recording and reproducing are also required.
そこで、結晶化ガラス等の非磁性材料から成る基板のギ
ャップ対向面に、高透磁率及び高飽和磁束密度を有する
合金磁性材料、例えばセンダスト合金やアモルファス合
金等から成る薄膜を形成し一対の上記各ブロックを溶着
用ガラスで相互に溶着させて成るコアを使用した磁気へ
、ドが用いられるようになってきている。Therefore, a thin film made of an alloy magnetic material having high magnetic permeability and high saturation magnetic flux density, such as sendust alloy or amorphous alloy, is formed on the gap-opposing surface of a substrate made of a non-magnetic material such as crystallized glass, and a pair of each of the above-mentioned materials is formed. Increasingly, magnets are being used for magnetism using cores made of blocks welded together with welding glass.
上記コアに形成されるギャップには、溶着に使用された
上記ガラスも充填されており、この溶着用ガラスとして
は、鉛を玉成分とした低融点ガラス等が使用されている
。The gap formed in the core is also filled with the glass used for welding, and the welding glass is a low melting point glass containing lead as a bead component.
〔発明が解決しようとする課題］
ところが、前記基板、アモルファス合金薄膜及び蒸着に
よる合金薄膜等を上記従来のガラスを用いて溶着する場
合、上記基板の熱変形や合金薄膜の熱応力による剥離等
を防止するために、なるべく低い温度（６００°Ｃ以下
）で溶着を行うことが望ましい。しかし、一般に、この
ような温度で使用できるガラスは、硬度等に問題点を有
する物が多い。また、充填されているガラスの偏摩耗等
を防くために、そのビッカース硬度は５００以上を確保
する必要があるが、このような硬度を備えたガラスは、
６００ ’Ｃ以下という温度では、低粘度で優れた濡れ
性を有する物が少ないため、溶着性が悪い。[Problems to be Solved by the Invention] However, when the above-mentioned substrate, amorphous alloy thin film, alloy thin film by vapor deposition, etc. are welded using the above-mentioned conventional glass, thermal deformation of the above-mentioned substrate and peeling of the alloy thin film due to thermal stress may occur. In order to prevent this, it is desirable to perform welding at a temperature as low as possible (600°C or less). However, in general, many glasses that can be used at such temperatures have problems such as hardness. In addition, in order to prevent uneven wear of the filled glass, it is necessary to ensure a Vickers hardness of 500 or more, but glass with such hardness is
At temperatures below 600'C, there are few materials with low viscosity and excellent wettability, resulting in poor weldability.
さらに、最も一般的に溶着用のガラスとして使用される
鉛ガラスでは、溶着時に合金薄膜との間で、核化と呼ば
れる反応を起こし、核化の生じた合金薄膜部分は磁性を
失っていると共に、ガラス部分は脆くなるために割れ欠
けを生じ易くなっているので、磁気特性の劣化を生して
いる。Furthermore, lead glass, which is most commonly used as glass for welding, undergoes a reaction called nucleation with the alloy thin film during welding, and the nucleated part of the alloy thin film loses its magnetism. Since the glass portion becomes brittle, it is prone to cracking and chipping, resulting in deterioration of magnetic properties.
したがって、上記従来のガラスを用いて作製される磁気
ヘッドの製造においては、上記の各問題点に起因する歩
留りの低下を招いている。Therefore, in the manufacture of magnetic heads made using the above-mentioned conventional glass, the yield is reduced due to each of the above-mentioned problems.
そこで、本願発明者は、上記従来の問題点に鑑み、特に
、前記基板と合金磁性材料とから成る磁気ヘッドの作製
に用いられる溶着用ガラスにつき鋭意研究を重ねた結果
、新たなガラス組成物を知見し、本発明をなすに至った
。Therefore, in view of the above-mentioned conventional problems, the inventors of the present application have conducted extensive research on welding glass used for manufacturing magnetic heads made of the above-mentioned substrate and alloy magnetic material, and have developed a new glass composition. Based on these findings, we have come up with the present invention.
本発明に係る溶着用ガラス組成物は、上記課題を解決す
るために、Ｓｉ ０２２４〜２７重量％、ＰｂＯ３８〜
４３重量％、Ｎａ２Ｏ５〜１３重量％、Ｋ２Ｏ２〜６重
量％、Ｂ２Ｏ．３〜７重量％１．１２０３１〜３重量％
、Ｔｌ２０Ｓ〜１６重景％、ＳｒＯ１〜２重量％から成
ることを特徴としている。In order to solve the above problems, the welding glass composition according to the present invention contains Si0224-27% by weight, PbO38-27% by weight.
43% by weight, 5-13% by weight of Na2O, 2-6% by weight of K2O, B2O. 3-7% by weight 1.12031-3% by weight
, Tl20S~16% by weight, and SrO1~2% by weight.
［作 用］
上記の構成によれば、ＳｒＯの働きにより核化が抑制さ
れることから、合金磁性材料における磁性の損失する部
分の発生が減少し、一方、上記ガラス組成物の割れ欠け
を減少させる。また、Ｔｌ２Ｏを比較的多く含んでいる
ため、６００°Ｃ以下で低粘度で濡れ性に冨んだガラス
となり、６００″Ｃ以下での溶着性が優れている。さら
に、Ｓｒ Ｏの働きによりビッカース硬度は５００以上
となり、耐摩耗性に優れ、偏摩耗も少なくなる。その上
、６００℃以下で溶着が可能なため、前記基板の熱変形
や合金薄膜の熱応力による剥離等を防止することができ
る。[Function] According to the above configuration, since nucleation is suppressed by the action of SrO, the occurrence of parts where magnetism is lost in the alloy magnetic material is reduced, and on the other hand, cracking and chipping of the above glass composition is reduced. let In addition, since it contains a relatively large amount of Tl2O, it becomes a glass with low viscosity and high wettability at temperatures below 600°C, and has excellent weldability at temperatures below 600"C. Furthermore, due to the action of SrO, Vickers The hardness is 500 or more, which means it has excellent wear resistance and less uneven wear.Furthermore, since welding can be performed at temperatures below 600°C, thermal deformation of the substrate and peeling of the alloy thin film due to thermal stress can be prevented. can.
（実施例〕 本発明の一実施例を以下に説明する。(Example〕 An embodiment of the present invention will be described below.
Ｓｉ Ｃ１ｚ 、Ｐｂ ０１Ｎａｚ○、ＫｚＯｌＢ２Ｏ
゜、Ａｌ２Ｏ３、Ｔｌ２ＯおよびＳｒ Ｏを第１表の組
成比に従ってそれぞれ一定量ずつ採取し、白金るつぼ中
で１２００°Ｃの温度にて約１時間溶融および混合する
ことにより、試料ｌを作製した。Si C1z, Pb 01Naz○, KzOlB2O
゜, Al2O3, Tl2O and Sr2O were each taken in fixed amounts according to the composition ratios shown in Table 1, and sample 1 was prepared by melting and mixing them in a platinum crucible at a temperature of 1200°C for about 1 hour.
得られた試料１のガラス組成物に対し、その物性を測定
し、その結果を第１表に併せて示した。The physical properties of the obtained glass composition of Sample 1 were measured, and the results are also shown in Table 1.
［以下余白］
第１表
α１００−３０＋） ：
１００〜３
０°Ｃの熱膨張率
このようにして得た上記ガラス組成物においては、第１
表に示すように、このガラス組成物の屈伏点は４００
’Ｃ以下となり、磁気ヘッド製造の溶着過程において、
この溶着作業温度を５８０°Ｃに設定しても、上記ガラ
ス組成物は低粘度で濡れ性が良く、溶着性に優れていた
。[Margin below] Table 1 α100-30+): Coefficient of thermal expansion at 100 to 30°C In the above glass composition thus obtained, the first
As shown in the table, the yield point of this glass composition is 400
'C or less, and in the welding process of magnetic head manufacturing,
Even when the welding operation temperature was set at 580°C, the glass composition had low viscosity, good wettability, and excellent weldability.
また、６００°Ｃ以下という比較的低温で溶着が可能な
ため、熱による内部応力が小さく、前記基板の変形や合
金薄膜の剥離等の発生を抑えることができた。Furthermore, since welding can be performed at a relatively low temperature of 600° C. or lower, internal stress due to heat is small, and occurrences such as deformation of the substrate and peeling of the alloy thin film can be suppressed.
さらに、このガラス組成物を用いて作製された磁気へ・
ンドにおいて、このガラス組成物と合金薄膜との界面で
の核化が抑制された。このことから、上記合金薄膜の磁
性を損失した部分の発生が減少し、また、用いられた上
記ガラス組成物の割れ欠けの発生が減少したことから、
磁気特性の低下が抑制された。Furthermore, magnetic materials created using this glass composition
In this case, nucleation at the interface between the glass composition and the alloy thin film was suppressed. From this, the occurrence of areas where magnetism was lost in the alloy thin film was reduced, and the occurrence of cracks and chips in the glass composition used was reduced.
Deterioration of magnetic properties was suppressed.
一方、ビッカース硬度が５００以上であり、耐摩耗性に
優れ、偏摩耗も少なかった。On the other hand, the Vickers hardness was 500 or more, which showed excellent wear resistance and little uneven wear.
このように、上記溶着用ガラス組成物は種々の優れた特
性を有するので、このガラス組成物を用いて作製された
磁気ヘッドの歩留りが向上した。As described above, since the glass composition for welding has various excellent properties, the yield of magnetic heads manufactured using this glass composition has been improved.
［発明の効果］
本発明に係る溶着用ガラス組成物は、Ｓｉ ０□２４〜
２７重量％、ｐｂ○３８〜４３重量％、Ｎａ２Ｏ５〜１
３重量％、Ｋ２Ｏ２〜６重量％、Ｂ！０．３〜７重量％
、ＡＮ２Ｃｈ １〜３重量％、Ｔ１．０８〜１６重量％
、５ｒｏｌ〜２重量％から成るものである。[Effect of the invention] The welding glass composition according to the present invention has Si 0□24 to
27% by weight, pb○ 38-43% by weight, Na2O5-1
3% by weight, K2O2~6% by weight, B! 0.3-7% by weight
, AN2Ch 1-3% by weight, T1.08-16% by weight
, 5rol to 2% by weight.
それゆえ、核化抑制やこのことからの磁気特性の向上、
また、６００°Ｃ以下という比較的低温において低粘度
で濡れ性の良い優れた溶着性、及びこの比較的低温での
溶着可能なことからの熱応力や熱変形の低減、さらに、
耐摩耗性等の優れた特性を有している。Therefore, nuclearization suppression and improvement of magnetic properties from this,
In addition, it has excellent weldability with low viscosity and good wettability at a relatively low temperature of 600°C or less, and the ability to weld at a relatively low temperature reduces thermal stress and thermal deformation.
It has excellent properties such as wear resistance.
この結果、上記溶着用ガラス組成物は磁気ヘッド製造に
好適に使用され、磁気ヘッドの歩留りの向上を図ること
ができるという効果を奏する。As a result, the above-mentioned welding glass composition can be suitably used for manufacturing magnetic heads, and the yield of magnetic heads can be improved.
特許出願人 シャープ 株式会社、ミ・−ウPatent applicant: Sharp Corporation, Mi-W
Claims (1)
量％、Ｎａ＿２Ｏ５〜１３重量％、Ｋ＿２Ｏ２〜６重量
％、Ｂ＿２Ｏ＿３３〜７重量％、Ａｌ＿２Ｏ＿３１〜３
重量％、Ｔｌ＿２Ｏ８〜１６重量％、ＳｒＯ１〜２重量
％から成る溶着用ガラス組成物。1. SiO_224-27% by weight, PbO38-43% by weight, Na_2O5-13% by weight, K_2O2-6% by weight, B_2O_33-7% by weight, Al_2O_31-3
A welding glass composition comprising 8-16% by weight of Tl_2O and 1-2% by weight of SrO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15806890A JPH0446029A (en) | 1990-06-13 | 1990-06-13 | Glass composition for welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15806890A JPH0446029A (en) | 1990-06-13 | 1990-06-13 | Glass composition for welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0446029A true JPH0446029A (en) | 1992-02-17 |
Family
ID=15663601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15806890A Pending JPH0446029A (en) | 1990-06-13 | 1990-06-13 | Glass composition for welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0446029A (en) |
-
1990
- 1990-06-13 JP JP15806890A patent/JPH0446029A/en active Pending
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