JPH0617243B2 - Adhesion method for crystallized glass - Google Patents
Adhesion method for crystallized glassInfo
- Publication number
- JPH0617243B2 JPH0617243B2 JP61254200A JP25420086A JPH0617243B2 JP H0617243 B2 JPH0617243 B2 JP H0617243B2 JP 61254200 A JP61254200 A JP 61254200A JP 25420086 A JP25420086 A JP 25420086A JP H0617243 B2 JPH0617243 B2 JP H0617243B2
- Authority
- JP
- Japan
- Prior art keywords
- crystallized glass
- glass
- crystallized
- adhering
- matrix phase
- 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.)
- Expired - Lifetime
Links
- 239000011521 glass Substances 0.000 title claims description 81
- 238000000034 method Methods 0.000 title claims description 13
- 230000001070 adhesive effect Effects 0.000 claims description 19
- 239000013078 crystal Substances 0.000 claims description 13
- 239000011159 matrix material Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 11
- 229910018068 Li 2 O Inorganic materials 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 6
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 description 13
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 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
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0018—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and monovalent metal oxide as main constituents
- C03C10/0027—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and monovalent metal oxide as main constituents containing SiO2, Al2O3, Li2O as main constituents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Ceramic Products (AREA)
- Joining Of Glass To Other Materials (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は結晶化ガラスの接着方法に関し、特に精密な寸
法精度が要求される磁気ヘッド、多層基板、表示管等の
電子部品の製造分野において有用な結晶化ガラスの接着
方法に関するものである。TECHNICAL FIELD The present invention relates to a method for adhering crystallized glass, and particularly in the field of manufacturing electronic parts such as magnetic heads, multilayer substrates, display tubes, etc., which require precise dimensional accuracy. The present invention relates to a useful method for adhering crystallized glass.
［従来技術とその問題点］ 従来より結晶化ガラス同士あるいは結晶化ガラスをガラ
ス、セラミックスあるいは金属等の部材と接着する場
合、主に有機接着剤や粉末の接着ガラスが用いられてい
る。しかしながら有機接着剤は、接着性が悪い上、接着
した後高温に曝されると劣化しやすいという問題があ
り、また粉末の接着ガラスは接着強度が低い上に被接着
部材との関係から熱膨張係数が高いことが要求される場
合にはガラス中にアルカリ成分を多量含有させる必要が
あり、そのため化学的耐久性が悪くなるという問題が生
じる。いずれにしても従来の接着技術では、有機接着剤
や粉末の接着ガラス等の接着材料を被接着部材の間に介
在させて接着する必要があり、そのため工程が複雑にな
り生産コストが高くなるという問題がある。[Prior Art and its Problems] Conventionally, when bonding crystallized glass or crystallized glass to a member such as glass, ceramics or metal, an organic adhesive or powdered adhesive glass has been mainly used. However, the organic adhesive has a problem that it has poor adhesiveness and is apt to deteriorate when exposed to high temperature after being bonded. Also, the powdered adhesive glass has low adhesive strength and thermal expansion due to the relationship with the adherend member. When a high coefficient is required, it is necessary to add a large amount of alkali component to the glass, which causes a problem that the chemical durability is deteriorated. In any case, in the conventional bonding technique, it is necessary to interpose and bond an adhesive material such as an organic adhesive or an adhesive glass of powder between the members to be adhered, which complicates the process and increases the production cost. There's a problem.
［発明の目的］ 本発明は、上記従来の問題を解消するもので、従来のよ
うに被接着部材間に介在させる接着材料を必要とせず結
晶化ガラス自体が接着作用を有しているため被接着部材
との直接接着が可能である結晶化ガラスの接着方法を提
供することを目的とするものである。[Object of the Invention] The present invention solves the above-mentioned problems of the related art, and does not require an adhesive material to be interposed between the members to be adhered as in the related art, and the crystallized glass itself has an adhering action. It is an object of the present invention to provide a method for adhering crystallized glass which enables direct adhesion with an adhesive member.
［発明の構成］ 本発明の結晶化ガラスの接着方法は、重量百分率でSiO2
60〜85％、Li2O ７〜15％、K2O １〜７％、Na2O 0.1
〜７％、K2O＋Na2O ２〜14％、P2O5 0.1〜５％、Al2O3
１〜10％、PbO ０〜15％、B2O3 ０〜７％からなり、
結晶化可能なガラス成形品を結晶化熱処理して、ガラス
マトリックス相が全容量の20〜60％を占め、残りがLi2O
・2SiO2を主結晶とする結晶相である結晶化ガラスを作
製し、次いでこの結晶化ガラスの表面と接着すべき部材
の表面とを接触関係に置いた後、加圧しながら結晶化ガ
ラスの軟化点以下の温度で熱処理することにより、結晶
化ガラスの表面部のガラスマトリックス相に接着作用を
付与せしめることによって結晶化ガラスと部材とを接着
させることを特徴とする。[Structure of the Invention] The method for adhering crystallized glass of the present invention is based on SiO 2 by weight percentage.
60-85%, Li 2 O 7-15%, K 2 O 1-7%, Na 2 O 0.1
~7%, K 2 O + Na 2 O 2~14%, P 2 O 5 0.1~5%, Al 2 O 3
1-10%, PbO 0-15%, B 2 O 3 0-7%,
The crystallizable glass molded product is heat-treated for crystallization, and the glass matrix phase occupies 20 to 60% of the total volume, and the rest is Li 2 O.
・ Preparing crystallized glass that is a crystal phase with 2SiO 2 as the main crystal, and then placing the surface of this crystallized glass and the surface of the member to be bonded in contact relationship, then softening the crystallized glass while applying pressure. It is characterized in that the crystallized glass and the member are bonded to each other by imparting an adhesive action to the glass matrix phase of the surface portion of the crystallized glass by heat treatment at a temperature below the point.
本発明における結晶化ガラスと接着すべき部材として
は、ガラス、結晶化ガラス、セラミックス、金属から選
択される材料が適しており、良好な接着状態を保持する
ためにはこれらの部材の熱膨張係数と結晶化ガラスの熱
膨張係数とが近似していることが必要である。As the member to be adhered to the crystallized glass in the present invention, a material selected from glass, crystallized glass, ceramics and metal is suitable, and in order to maintain a good adhesion state, the coefficient of thermal expansion of these members is suitable. And the coefficient of thermal expansion of crystallized glass must be close to each other.
本発明の方法で用いる結晶化ガラスはどのような結晶化
ガラスであっても良い訳ではなく、例えばZrO2、TiO2等
の核形成剤を含み、結晶相が全容量の80％以上占めるい
わゆる一般の結晶化ガラスを上記部材と接着するには、
結晶化ガラスをそれの軟化点以上の高い温度で熱処理す
る必要があるが、そのような高温に結晶化ガラスを曝す
と所望の結晶が破壊若しくは他の結晶に転移して結晶化
ガラス自体が変形してしまうため高い寸法精度が要求さ
れる用途には到底使用できず、しかも結晶化ガラスと部
材との接着強度も低い。The crystallized glass used in the method of the present invention may not be any crystallized glass, for example, ZrO 2 , contains a nucleating agent such as TiO 2 , the crystal phase occupies 80% or more of the total capacity To bond ordinary crystallized glass to the above member,
It is necessary to heat the crystallized glass at a temperature higher than its softening point, but if the crystallized glass is exposed to such a high temperature, the desired crystal will be destroyed or transferred to another crystal and the crystallized glass itself will be deformed. Therefore, it cannot be used for applications requiring high dimensional accuracy, and the adhesive strength between the crystallized glass and the member is low.
従って本発明の方法で用いる結晶化ガラスとしては、限
定された結晶化ガラスが選択される必要がある。すなわ
ち結晶化可能なガラス成形品を所定の結晶化熱処理を行
うことによって作製される結晶化ガラスにおいてガラス
マトリックス相が全容量の20〜60％を占め、残りが結晶
相からなる結晶化ガラスを選択する必要がある。Therefore, it is necessary to select a limited crystallized glass as the crystallized glass used in the method of the present invention. That is, in a crystallized glass produced by subjecting a crystallizable glass molded article to a predetermined crystallizing heat treatment, a glass matrix phase occupies 20 to 60% of the total volume, and the remaining crystallized glass is a crystal phase. There is a need to.
斯様に本発明では、結晶化ガラス中のガラスマトリック
ス相が全容量の20〜60％を占めており、そのガラスマト
リックス相には結晶相と比較してアルカリ成分等のガラ
ス構造が熱的に不安定となる成分を比較的多量含有する
ため加圧しながら軟化点以下の温度で熱処理することに
よってそのガラスマトリックス相に接着作用が生ずる。
しかもガラスマトリックス相以外の残部は結晶相が40〜
80％を占めているため接着の際の熱処理により結晶化ガ
ラスに形状変化を起こさない。結晶化ガラスのマトリッ
クス相が全容量の20％以下の場合は、低温の熱処理でガ
ラスマトリックス相に接着作用が生じにくく、また60％
以上の場合は結晶相の割合が少なくなるため形状変化が
起こりやすくなる。As described above, in the present invention, the glass matrix phase in the crystallized glass occupies 20 to 60% of the total capacity, and the glass matrix phase has a glass structure such as an alkali component which is thermally higher than the crystal phase. Since it contains a relatively large amount of unstable components, heat treatment at a temperature below the softening point while applying pressure causes an adhesive action to the glass matrix phase.
Moreover, the crystal phase is 40 ~
Since it occupies 80%, the crystallized glass does not change its shape due to the heat treatment during bonding. If the matrix phase of the crystallized glass is less than 20% of the total volume, heat treatment at low temperature will not cause an adhesive action to the glass matrix phase,
In the above cases, the proportion of the crystal phase is small, and thus the shape change is likely to occur.
以上の要件を満足するためには、先に本出願人が提案し
た特願昭61−90370号に示す結晶化ガラスを用いること
が望ましい。すなわちこの特願に示されている重量百分
率でSiO2 60〜85％、Li2O ７〜15％、R2O １〜７％、
Na2O 0.1〜７％、K2＋Na2O ２〜14％、P2O5 0.1〜５
％、Al2O3 １〜10％、PbO ０〜15％、B2O3 ０〜７％
からなる結晶化ガラスは、被接着部材と接触関係に置い
た後、加圧しながら軟化点以下の温度で熱処理すること
により、結晶化ガラスに形状変化を起こさずに両者を強
固に接着することができる。上記成分及び含有量からな
る結晶化ガラスは、主結晶相としてLi2O・2SiO2を析出
するため形状変化を起こしにくく、一方ガラスマトリッ
クス相は、SiO2が少なく、且つK2O、Na2O、PbO等の成分
が多く、熱的に不安定なガラス構造となるため加圧しな
がら低温で熱処理することによって接着作用を付与する
ことができる。In order to satisfy the above requirements, it is desirable to use the crystallized glass disclosed in Japanese Patent Application No. 61-90370 previously proposed by the present applicant. That is, in terms of weight percentage shown in this patent application, SiO 2 60 to 85%, Li 2 O 7 to 15%, R 2 O 1 to 7%,
Na 2 O 0.1-7%, K 2 + Na 2 O 2-14%, P 2 O 5 0.1-5
%, Al 2 O 3 1-10%, PbO 0-15%, B 2 O 3 0-7%
The crystallized glass consisting of is placed in contact with the member to be adhered and then heat-treated at a temperature below the softening point while applying pressure, so that the two can be firmly adhered to each other without causing a change in shape of the crystallized glass. it can. Crystallized glass consisting of the above-mentioned components and contents is less likely to cause a shape change because Li 2 O.2SiO 2 is precipitated as a main crystal phase, while the glass matrix phase is low in SiO 2 and K 2 O, Na 2 Since there are many components such as O and PbO, and the glass structure becomes thermally unstable, it is possible to impart an adhesive effect by heat treatment at low temperature while applying pressure.
本発明では、この結晶化ガラスと接着すべき部材とをそ
の表面同士が接触関係になるように配置した後これを加
圧しながら結晶化ガラスの軟化点以下の温度で熱処理す
ると、結晶化ガラスの表面部のガラスマトリックス相が
薄膜状に溶けて被接着部材との接触界面を被い、これに
より結晶化ガラスと被接着部材とが接着される。In the present invention, when the crystallized glass and the member to be bonded are arranged so that their surfaces are in contact with each other and then heat-treated at a temperature below the softening point of the crystallized glass while pressurizing it, The glass matrix phase of the surface portion melts in a thin film and covers the contact interface with the adherend member, whereby the crystallized glass and the adherend member are adhered.
［実施例］ 以下本発明を実施例に基づいて説明する。[Examples] The present invention will be described below based on Examples.
（実施例１） 重量百分率でSiO2 75％、Al2O3 ６％、Li2O ８％、K2
O ５％、Na2O ３％、P2O5 ３％のガラス組成になる
ようにガラス原料を調合し、白金ルツボを用いて約1450
℃で溶融した後カーボン鋳型に流し込んで成形し、これ
を徐冷炉に入れ室温で炉冷することによって結晶化可能
なガラス成形品を得た。この後このガラスを電気炉に入
れ120℃／時の昇温速度で約550℃まで加熱しこの温度に
１時間保持し、次いで40℃／時の昇温速度で約800℃ま
で加熱し、この温度に２時間保持した後室温まで炉冷し
た。これによってLi2O・2SiO2結晶を析出し、ガラスマ
トリックス相が約25容量％を占め熱膨張係数が約120×1
0-7／℃、軟化点が約800℃の結晶化ガラスが得られた。
これを縦７mm、横10mmで厚さが70μｍの寸法に加工し
た。この結晶化ガラスを７×10×４mmの寸法で表面を鏡
面研磨した熱膨張係数が約120×10-7／℃のフェライト
の２枚によってはさみ、約２kg／cm2の圧力になるよう
に荷重をかけ、それを電気炉中にセットし、フェライト
の酸化防止のためN2ガス雰囲気中において常温から180
℃／時の昇温速度で約710℃まで加熱し、この温度に１
時間保持した後、常温まで炉冷した。次いで、これを炉
外に取り出して、その接着面に対して垂直にダイヤモン
ドカッターで切断した。その切断面を鏡面研磨して顕微
鏡で観察したところ接着部分にクラックや気泡は認めら
れず、結晶化ガラスと２枚のフェライトは強固に接着し
ており、且つフェライト同士は70μｍの間隔で良好な平
行度を保っていた。(Example 1) SiO 2 75%, Al 2 O 3 6%, Li 2 O 8%, K 2 by weight percentage
Glass raw materials were blended so that the glass composition was O 5%, Na 2 O 3%, P 2 O 5 3%, and a platinum crucible was used for about 1450
After melting at 0 ° C., it was poured into a carbon mold for molding, and this was put in an annealing furnace and cooled at room temperature to obtain a crystallizable glass molded product. After this, the glass was placed in an electric furnace and heated to about 550 ° C at a heating rate of 120 ° C / hour and held at this temperature for 1 hour, and then heated to about 800 ° C at a heating rate of 40 ° C / hour. After maintaining the temperature for 2 hours, the furnace was cooled to room temperature. As a result, Li 2 O ・ 2SiO 2 crystals are deposited, the glass matrix phase occupies about 25% by volume, and the thermal expansion coefficient is about 120 × 1
A crystallized glass having a softening point of 0-7 / ° C and a softening point of about 800 ° C was obtained.
This was processed to a size of 7 mm in length, 10 mm in width and 70 μm in thickness. This crystallized glass is sandwiched by two pieces of ferrite with a thermal expansion coefficient of about 120 × 10 -7 / ° C, the surface of which is mirror-polished in a size of 7 × 10 × 4 mm, and a load of about 2 kg / cm 2 is applied. Then, place it in an electric furnace and keep it in the N 2 gas atmosphere from room temperature for 180
Heat to about 710 ℃ at a heating rate of ℃ / hour,
After holding for a time, the furnace was cooled to room temperature. Then, this was taken out of the furnace and cut with a diamond cutter perpendicular to the bonding surface. When the cut surface was mirror-polished and observed under a microscope, cracks and bubbles were not observed in the bonded part, the crystallized glass and the two ferrites were firmly bonded, and the ferrites were spaced well by 70 μm. The parallelism was maintained.
［発明の効果］ 以上のように本発明の結晶化ガラスの接着方法は、結晶
化ガラスの表面と接着すべき部材の表面とを接触関係に
置いた後、加圧しながら低温で熱処理することによって
結晶化ガラス自体の表面が接着作用を有して両者を強固
に接着することができるため、従来のように有機接着剤
や粉末の接着ガラスを用いる必要がないので接着工程が
簡単になり、しかも寸法精度よく接着することができる
ため特に精密な寸法精度が要求される磁気ヘッド、多層
基板、表示管等に使用するのに適している。[Advantages of the Invention] As described above, in the method for adhering crystallized glass of the present invention, after the surface of crystallized glass and the surface of the member to be adhered are placed in contact with each other, heat treatment is performed at low temperature while applying pressure. Since the surface of the crystallized glass itself has an adhesive action and can firmly bond the both, it is not necessary to use an organic adhesive or powdered adhesive glass as in the conventional case, and thus the adhesion process is simplified, and Since they can be bonded with high dimensional accuracy, they are suitable for use in magnetic heads, multilayer substrates, display tubes, etc., which require particularly high dimensional accuracy.
また本発明の実施例では、結晶化ガラスの形状をシート
状としたが、本発明はこれに限定されるものではなく、
接着すべき部材の形状によっては円状、リング状、タン
ザク状等の形状で用いることもできる。Further, in the embodiment of the present invention, the shape of the crystallized glass was a sheet, but the present invention is not limited to this,
Depending on the shape of the members to be bonded, a circular shape, a ring shape, a zigzag shape, or the like can be used.
Claims (2)
％、K2O １〜７％、Na2O 0.1〜７％、K2O＋Na2O ２〜
14％、P2O5 0.1〜５％、Al2O3１〜10％、PbO ０〜15
％、B2O3 ０〜７％からなり、結晶化可能なガラス成形
品を結晶化熱処理して、ガラスマトリックス相が全容量
の20〜60％を占め、残りがLi2O・2SiO2を主結晶とする
結晶相である結晶化ガラスを作製し、次いでこの結晶化
ガラスの表面と接着すべき部材の表面とを接触関係に置
いた後、加圧しながら結晶化ガラスの軟化点以下の温度
で熱処理することにより、結晶化ガラスの表面部のガラ
スマトリックス相に接着作用を付与せしめることによっ
て結晶化ガラスと部材とを接着させることを特徴とする
結晶化ガラスの接着方法。1. A weight percentage of SiO 2 60 to 85%, Li 2 O 7 to 15
%, K 2 O 1 to 7%, Na 2 O 0.1 to 7%, K 2 O + Na 2 O 2
14%, P 2 O 5 0.1-5%, Al 2 O 3 1-10%, PbO 0-15
%, B 2 O 3 0 to 7%, and a crystallizable glass molded product is heat-treated for crystallization so that the glass matrix phase occupies 20 to 60% of the total volume, and the rest is Li 2 O.2SiO 2 . After making crystallized glass that is the crystal phase that is the main crystal, and then placing the surface of this crystallized glass in contact with the surface of the member to be bonded, the temperature below the softening point of the crystallized glass while applying pressure. A method for adhering crystallized glass, which comprises adhering the crystallized glass to a member by imparting an adhesive action to the glass matrix phase of the surface portion of the crystallized glass by heat treatment in.
ス、セラミックス、金属から選択される材料であること
を特徴とする特許請求の範囲第１項記載の結晶化ガラス
の接着方法。2. The method for adhering crystallized glass according to claim 1, wherein the member to be adhered is a material selected from glass, crystallized glass, ceramics, and metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61254200A JPH0617243B2 (en) | 1986-10-24 | 1986-10-24 | Adhesion method for crystallized glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61254200A JPH0617243B2 (en) | 1986-10-24 | 1986-10-24 | Adhesion method for crystallized glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63107832A JPS63107832A (en) | 1988-05-12 |
| JPH0617243B2 true JPH0617243B2 (en) | 1994-03-09 |
Family
ID=17261640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61254200A Expired - Lifetime JPH0617243B2 (en) | 1986-10-24 | 1986-10-24 | Adhesion method for crystallized glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0617243B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19739242A1 (en) * | 1997-09-08 | 1999-03-11 | Fraunhofer Ges Forschung | Use of crystallizable glass compositions as sealing material for sheathed cables |
| US20030188553A1 (en) * | 2002-04-08 | 2003-10-09 | Mann Larry G. | Direct bonding methods using lithium |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5414132A (en) * | 1977-07-04 | 1979-02-02 | Fujitsu Ltd | Control circuit for signal transmission |
-
1986
- 1986-10-24 JP JP61254200A patent/JPH0617243B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63107832A (en) | 1988-05-12 |
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