JPH04114929A - Fusing glass composition - Google Patents
Fusing glass compositionInfo
- Publication number
- JPH04114929A JPH04114929A JP23156290A JP23156290A JPH04114929A JP H04114929 A JPH04114929 A JP H04114929A JP 23156290 A JP23156290 A JP 23156290A JP 23156290 A JP23156290 A JP 23156290A JP H04114929 A JPH04114929 A JP H04114929A
- Authority
- JP
- Japan
- Prior art keywords
- glass composition
- welding
- glass
- magnetic
- weight
- 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
- 239000011521 glass Substances 0.000 title claims abstract description 56
- 239000000203 mixture Substances 0.000 title claims abstract description 37
- 238000003466 welding Methods 0.000 claims description 32
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 description 15
- 229910045601 alloy Inorganic materials 0.000 description 15
- 239000010409 thin film Substances 0.000 description 12
- 239000000758 substrate Substances 0.000 description 11
- 230000008018 melting Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000006911 nucleation Effects 0.000 description 5
- 238000010899 nucleation Methods 0.000 description 5
- 239000000696 magnetic material Substances 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000005355 lead glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910000702 sendust Inorganic materials 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等から成る薄膜を
形成した基板ブロックを作製し、一対の上記各基板ブロ
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
した磁気ヘンドが用いられるようになってきている。Therefore, a substrate block was fabricated in which a thin film made of an alloy magnetic material having high magnetic permeability and high saturation magnetic flux density, such as Sendust alloy, was formed on the gap-opposing surface of a substrate made of a non-magnetic material such as crystallized glass, and a pair of substrate blocks were fabricated. A magnetic hend using a core formed by welding each of the above-mentioned substrate blocks to each other with welding glass has come into use.
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、鉛を主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 as the welding glass, a low melting point glass containing lead as a main component is used.
通常、蒸着等により合金薄膜の形成された前記各基板ブ
ロックを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、な
るべく低い温度（５００°Ｃ以下）で溶着を行うことが
望ましい。また、ギャップに充填されているガラスの偏
摩耗等を防ぐために、そのビッカース硬度は３５０以」
二を確保する必要がある。ところが、このような硬度を
備えたガラスは、５００°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、溶着性に劣
るものが多い。一方、５００°Ｃ以下で溶着可能なガラ
スには、」１記のような硬度を備えるものは少ない。Normally, when glass is used to weld the substrate blocks on which alloy thin films are formed by vapor deposition or the like, the temperature is kept as low as possible (500°C) to prevent thermal deformation of the substrates and peeling of the alloy thin films due to thermal stress. It is desirable to perform welding using the method below). In addition, in order to prevent uneven wear of the glass filled in the gap, its Vickers hardness is 350 or higher.
It is necessary to secure two. However, since there are few glasses with such hardness that have low viscosity and excellent wettability at temperatures below 500°C, many have poor weldability. On the other hand, there are few glasses that can be welded at temperatures below 500°C that have the hardness described in item 1.
さらに、５００°Ｃ以下という温度で熔融する低融点ガ
ラスでは、その融点が低いほど高膨張率を有する傾向に
あり、前記のように低膨張率の結晶化ガラス等から成る
一対の基板を相互に溶着するには、膨張率の差により高
膨張率の低融点ガラスは適していない。Furthermore, with low melting point glasses that melt at temperatures below 500°C, the lower the melting point, the higher the coefficient of expansion. Due to the difference in expansion coefficient, low melting point glass with a high expansion coefficient is not suitable for welding.
また、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
を生じ易くなっており、磁気特性の劣化を生じ易くなっ
ている。In addition, lead glass, which is most commonly used as glass for welding, causes 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 more likely to crack and chip, and the magnetic properties are more likely to deteriorate.
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 intensive research on welding glasses used in manufacturing magnetic heads made of the above-mentioned substrate and an alloy magnetic material, and have developed a new glass composition. Based on these findings, we have come up with the present invention.
本発明の請求項第１項に係る溶着用ガラス組成物は、」
１記課題を解決するために、８２Ｏ３１７〜２９重景％
、Ｚ重量１０〜２７重量％、３１０２〜４重量％、１゛
１□０５０〜６５重量％から成ることを特徴としている
。The welding glass composition according to claim 1 of the present invention is:
In order to solve the problem mentioned above, 82O317~29 heavy view%
, Z 10 to 27% by weight, 3102 to 4% by weight, and 1゛1□050 to 65% by weight.
また、本発明の請求項第２項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、Ｂ ２Ｏ ｓ９〜２１
重量％、ＺｎＯ２２〜２９重景％、３１０重量４重量％
、Ｖ ２Ｏ５４６〜６４重量％から重量ことを特徴とし
ている。Moreover, in order to solve the above-mentioned problem, the welding glass composition according to claim 2 of the present invention has B 2 O s9 to 21
Weight %, ZnO22-29 weight%, 310 weight 4 weight%
, V2O from 546 to 64% by weight.
（作 用〕
上記請求項第１項の構成にはＴｌ２Ｏ、請求項第２項の
構成には■２Ｏ．を比較的多く含んでいるため、５００
°Ｃ以下で低粘度で濡れ性に冨んだガラスとなり、５０
０°Ｃ以下での溶着が可能となっている。(Function) The structure of claim 1 contains a relatively large amount of Tl2O, and the structure of claim 2 contains a relatively large amount of 2O.
It becomes a glass with low viscosity and rich wettability below 50°C.
Welding is possible at temperatures below 0°C.
また、上記請求項第１項および第２項の構成によれば、
ＳｒＯの働きにより核化が抑制されることから、合金磁
性材料におりる磁性の損失する部分の発生が低減される
と共に、上記ガラス組成物の割れ欠けを減少させる。さ
らに、ＳｒＯの働きによりビッカース硬度は３５０以上
となり、耐摩耗性に優れ、偏摩耗も少なくなる。Furthermore, according to the configurations of the first and second claims,
Since nucleation is suppressed by the action of SrO, the occurrence of areas where magnetism is lost in the alloy magnetic material is reduced, and cracking and chipping of the glass composition is also reduced. Furthermore, due to the action of SrO, the Vickers hardness is 350 or more, which provides excellent wear resistance and less uneven wear.
一方、５００’Ｃ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。On the other hand, since welding is possible at 500'C or less, thermal deformation of the substrate and peeling of the alloy thin film due to thermal stress can be prevented.
その−ヒ、線膨張係数が６０〜８０（ＸＩＯ−７だＣ）
と小さく、これまで使用できなかった結晶化ガラス（線
膨張係数約７０Ｘ１．０−’だＣ）等の素材から成る基
板等に対しても用いることができる。-Hi, linear expansion coefficient is 60 to 80 (XIO-7C)
Because of its small size, it can also be used for substrates made of materials such as crystallized glass (linear expansion coefficient of about 70×1.0-'C), which could not be used until now.
〔実施例１〕 本発明の請求項第１項の一実施例を以下に説明する。[Example 1] An embodiment of claim 1 of the present invention will be described below.
Ｂ ｚ Ｏ３、ＺｎＯ，ＳｒＯおよびＴｌ２Ｏ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１２Ｏ０’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１を作製した。Sample 1 was prepared by collecting fixed amounts of BzO3, ZnO, SrO, and Tl2O according to the composition ratios in Table 1, and melting and mixing them in a platinum crucible at a temperature of 12O0'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.
第１表
α１００−３００ ： １００〜３００”Ｃの線膨
張係数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４
００′Ｃ以下となり、磁気へンド製造の溶着過程におい
て、この溶着作業温度を４８０°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。Table 1 α100-300: Linear expansion coefficient of 100 to 300”C In the glass composition thus obtained, as shown in Table 1, the yield point of this glass composition is 4
Even when the welding operation temperature was set at 480°C during the welding process for manufacturing the magnetic head, the glass composition had a low viscosity, good wettability, and excellent weldability.
また、５００°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 500° 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.
一方、上記ガラス組成物は、熱膨張係数が６６×１０−
’／ ’Ｃと従来より低く、」二記載板として使用され
る結晶化ガラス等の熱膨張係数約７０Ｘ１０−’／ ’
Ｃとほぼ等しいことにより、上記ガラス組成物を用いて
溶着した際、膨張率の差に起因する溶着不良等が低減さ
れた。On the other hand, the above glass composition has a coefficient of thermal expansion of 66×10−
The coefficient of thermal expansion of crystallized glass used as a writing board is approximately 70X10-'/'
By being approximately equal to C, welding defects caused by differences in expansion coefficients were reduced when welding using the above glass composition.
このように５００″Ｃ以下という比較的低温で溶着が可
能であり、低膨張率を有する溶着用ガラス組成物は、セ
ラミックス粉末等を含んだフリットガラス以外、従来余
り知られていない。As described above, welding glass compositions that can be welded at a relatively low temperature of 500''C or lower and have a low expansion coefficient have not been known in the past, other than frit glass containing ceramic powder or the like.
さらに、このガラス組成物を用いて作製された磁気ヘッ
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
気特性の低下が従来より抑制された。Furthermore, in the magnetic head manufactured using this glass composition, nucleation at the interface between this glass composition and the alloy thin film was suppressed. As a result, the occurrence of areas where magnetism has been lost in the alloy thin film is reduced, and the occurrence of cracking and chipping in the glass composition used is reduced, so that deterioration of magnetic properties is suppressed compared to the past.
一方、ピンカース硬度が３５０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 Pinkers hardness was 350 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
性を有したので、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 had various excellent properties, the yield of magnetic heads manufactured using this glass composition was improved.
〔実施例２〕 本発明の請求項第２項の一実施例を以下に説明する。[Example 2] An embodiment of claim 2 of the present invention will be described below.
Ｂ２Ｏ３、ＺｎＯ１ＳｒＯおよびＶ２Ｃ，を第２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１２Ｏ０°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２を作製した。Sample 2 was prepared by collecting fixed amounts of B2O3, ZnO1SrO, and V2C according to the composition ratios shown in Table 2, and melting and mixing them in a platinum crucible at a temperature of 1200°C for about 1 hour.
得られた試料２のガラス組成物に対し、その物性を測定
し、その結果を第２表に併せて示した。The physical properties of the obtained glass composition of Sample 2 were measured, and the results are also shown in Table 2.
第２表
このようにして得た上記ガラス組成物においては、第２
表に示すように、このガラス組成物の屈伏点は３５０“
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４５０°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。Table 2 In the glass composition thus obtained, the second
As shown in the table, the yield point of this glass composition is 350"
C or less, and even when the welding operation temperature was set at 450° C. during the welding process for manufacturing the magnetic head, the glass composition had a low viscosity, good wettability, and excellent weldability.
また、５００°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 500° 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.
一方、上記ガラス組成物は、熱膨張係数が６７×１０−
７／ ’Ｃと従来より低く、」二記載板として使用され
る結晶化ガラス等の熱膨張係数約７０Ｘ１０−’／ ”
Ｃとほぼ等しいことにより、上記ガラス組成物を用いて
溶着した際、膨張率の差に起因する溶着不良等が低減さ
れた。On the other hand, the above glass composition has a thermal expansion coefficient of 67×10−
The coefficient of thermal expansion of crystallized glass, etc. used as a writing plate is approximately 70X10-'/'', which is lower than conventional 7/'C
By being approximately equal to C, welding defects caused by differences in expansion coefficients were reduced when welding using the above glass composition.
このように５００°Ｃ以下という比較的低温で溶着が可
能であり、低膨張率を有する溶着用ガラス組成物は、セ
ラミックス粉末等を含んだフリットガラス以外、従来余
り知られていない。As described above, welding glass compositions that can be welded at a relatively low temperature of 500° C. or lower and have a low expansion coefficient have not been known so far, other than frit glass containing ceramic powder or the like.
さらに、このガラス組成物を用いて作製された磁気ヘッ
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
気特性の低下が従来より抑制された。Furthermore, in the magnetic head manufactured using this glass composition, nucleation at the interface between this glass composition and the alloy thin film was suppressed. As a result, the occurrence of areas where magnetism has been lost in the alloy thin film is reduced, and the occurrence of cracking and chipping in the glass composition used is reduced, so that deterioration of magnetic properties is suppressed compared to the past.
一方、ビッカース硬度が３５０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 350 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
性を有したので、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 had various excellent properties, the yield of magnetic heads manufactured using this glass composition was improved.
請求項第１項および第２項記載の溶着用ガラス組成物は
、核化が抑制されることによる磁気特性の向上、また、
５００°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、及び比較的低温での溶着が可能
なことにより熱応力の減少や熱変形の低減、さらに、耐
摩耗性および低膨張率等の優れた特性を有している。The welding glass composition according to claims 1 and 2 improves magnetic properties by suppressing nucleation, and
Excellent weldability with low viscosity and good wettability at relatively low temperatures of 500°C or less, and the ability to weld at relatively low temperatures reduces thermal stress and thermal deformation, as well as abrasion resistance and low It has excellent properties such as expansion rate.
これらの結果、上記各溶着用ガラス組成物は、それぞれ
磁気ヘッド製造における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, each of the welding glass compositions described above has the effect of improving the yield in manufacturing magnetic heads.
Claims (1)
重量％、ＳｒＯ２〜４重量％、Ｔｌ＿２Ｏ５０〜６５重
量％から成る溶着用ガラス組成物。 ２、Ｂ＿２Ｏ＿３９〜２１重量％、ＺｎＯ２２〜２９重
量％、ＳｒＯ２〜４重量％、Ｖ＿２Ｏ＿５４６〜６４重
量％から成る溶着用ガラス組成物。[Claims] 1. B_2O_317-29% by weight, ZnO10-27
A welding glass composition comprising 2-4% by weight of SrO and 50-65% by weight of Tl_2O. 2. A welding glass composition comprising 39-21% by weight of B_2O_, 22-29% by weight of ZnO, 2-4% by weight of SrO, and 546-64% by weight of V_2O_.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2231562A JP2577128B2 (en) | 1990-08-31 | 1990-08-31 | Welding glass composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2231562A JP2577128B2 (en) | 1990-08-31 | 1990-08-31 | Welding glass composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04114929A true JPH04114929A (en) | 1992-04-15 |
| JP2577128B2 JP2577128B2 (en) | 1997-01-29 |
Family
ID=16925457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2231562A Expired - Lifetime JP2577128B2 (en) | 1990-08-31 | 1990-08-31 | Welding glass composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2577128B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0779257A4 (en) * | 1995-06-30 | 1998-10-14 | Tdk Corp | Dielectric porcelain, process for production thereof, and electronic parts produced therefrom |
| WO2004074198A1 (en) * | 2003-02-19 | 2004-09-02 | Yamato Electronic Co., Ltd. | Lead-free glass material for use in sealing and, sealed article and method for sealing using the same |
| US7585798B2 (en) | 2003-06-27 | 2009-09-08 | Yamato Electronic Co., Ltd. | Lead-free glass material for use in sealing and, sealed article and method for sealing using the same |
-
1990
- 1990-08-31 JP JP2231562A patent/JP2577128B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0779257A4 (en) * | 1995-06-30 | 1998-10-14 | Tdk Corp | Dielectric porcelain, process for production thereof, and electronic parts produced therefrom |
| WO2004074198A1 (en) * | 2003-02-19 | 2004-09-02 | Yamato Electronic Co., Ltd. | Lead-free glass material for use in sealing and, sealed article and method for sealing using the same |
| US7425518B2 (en) | 2003-02-19 | 2008-09-16 | Yamato Electronic Co., Ltd. | Lead-free glass material for use in sealing and, sealed article and method for sealing using the same |
| US7585798B2 (en) | 2003-06-27 | 2009-09-08 | Yamato Electronic Co., Ltd. | Lead-free glass material for use in sealing and, sealed article and method for sealing using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2577128B2 (en) | 1997-01-29 |
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