JPS63170241A - Glass composition for sealing - Google Patents
Glass composition for sealingInfo
- Publication number
- JPS63170241A JPS63170241A JP108887A JP108887A JPS63170241A JP S63170241 A JPS63170241 A JP S63170241A JP 108887 A JP108887 A JP 108887A JP 108887 A JP108887 A JP 108887A JP S63170241 A JPS63170241 A JP S63170241A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- powder
- sealing
- pbo
- glass composition
- 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 51
- 238000007789 sealing Methods 0.000 title claims abstract description 11
- 239000000203 mixture Substances 0.000 title claims description 25
- 239000000843 powder Substances 0.000 claims abstract description 29
- 239000000945 filler Substances 0.000 claims abstract description 15
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000005394 sealing glass Substances 0.000 claims description 11
- 239000007769 metal material Substances 0.000 abstract description 2
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 abstract 2
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 abstract 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- 229910007271 Si2O3 Inorganic materials 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 abstract 1
- 238000005286 illumination Methods 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 5
- 239000005361 soda-lime glass Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000005355 lead glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 239000002994 raw material 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
- 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
- C03C8/245—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 containing more than 50% lead oxide, by weight
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】
〔発明の目的〕
（発明の技術分野）
本発明は照明用ガラスや金属材料への封着に好適し、特
にランプ照度の向上を可能とする封着用ガラス組成物に
関する。Detailed Description of the Invention [Objective of the Invention] (Technical Field of the Invention) The present invention relates to a sealing glass composition that is suitable for sealing to lighting glass or metal materials, and that is particularly capable of improving lamp illuminance. .
（従来の技術）
一般に照明用ガラスとして、たとえば蛍光ランプ用のガ
ラス素材はソーダライム系ガラス、あるいはカリ、ソー
ダ、鉛系ガラスからなっており、これらのガラスの封着
に用いられる封着用ガラス組成物はガラスとの整合性を
良好とし、かつ変形を生じさせないため、その平均熱膨
張係数（以下αと称す）は８８〜１００ Ｘ １０−’
／℃で、かつ４５０℃以下の焼成温度で融着し得る組成
のものが要求されている。(Prior art) Glass materials for lighting, for example, fluorescent lamps, are generally made of soda-lime glass, or potash, soda, or lead glass, and the sealing glass composition used to seal these glasses. In order to ensure good compatibility with the glass and not cause deformation, the average coefficient of thermal expansion (hereinafter referred to as α) is 88 to 100 x 10-'
There is a need for a composition that can be fused at a firing temperature of /°C and 450°C or lower.
従来、この要求に対応するものとして、たとえばソーダ
ライム系ガラスと融着する封着用ガラス組成物として特
公昭５６−７９７７′Ｆｉ公報、または特開昭５３−１
７６０７号に開示されたものがある。Conventionally, as a sealing glass composition that can be fused with soda lime glass, Japanese Patent Publication No. 56-7977'Fi or Japanese Patent Application Laid-open No. 53-1 has been proposed to meet this demand.
There is one disclosed in No. 7607.
ところが、前者にあってはガラス組成中にガラスの導電
性、濡れ性を改善する目的でＣｕＯを含有させているが
、このＣｕＯは黒く着色するため、特に反射輝度を重視
する照明用ガラスとしては外観上および照度向上におい
ても好ましくない、また後者のものにあっても同様に茶
ないしは黒色に着色して照明用ガラスとしては不適であ
る。However, in the former case, CuO is included in the glass composition for the purpose of improving the conductivity and wettability of the glass, but since this CuO is colored black, it is not suitable for lighting glasses where reflective brightness is particularly important. It is also unfavorable in terms of appearance and illuminance improvement, and even in the latter case, it is similarly colored brown or black, making it unsuitable for use as lighting glass.
（発明が解決しようとする問題点）
上述のように従来の封着用ガラス組成物は融着部が黒変
するので、これを照明用ガラスの封着に使用した場合、
外観を損なうとともに照度の低下を招く欠点を有してい
る。(Problems to be Solved by the Invention) As mentioned above, the fused portion of the conventional sealing glass composition turns black, so when this is used for sealing lighting glass,
This has the disadvantage of impairing the appearance and causing a decrease in illuminance.
本発明は上記欠点を除去するためなされたもので、４５
０℃以下の温度で封着が可能となり、しかもαが８８〜
１００ Ｘ １０−’／’Ｃの範囲内にあって照度の向
上を可能とする封着用ガラス組成物を提供することを目
的とする。The present invention has been made to eliminate the above-mentioned drawbacks, and
Sealing is possible at temperatures below 0℃, and α is 88~
It is an object of the present invention to provide a sealing glass composition that is within the range of 100 x 10-'/'C and can improve illuminance.
（問題点を解決するための手段）
本発明の封着用ガラス組成物は軟化点３７０℃以下のＰ
ｂＯ−Ｂ、０．系低融点ガラス組成物で、ガラス粉末７
０〜９５重量％、フィラー粉末５〜３０重量％からなる
ものである。(Means for solving the problem) The sealing glass composition of the present invention has a softening point of 370°C or less.
bO-B, 0. Based on a low melting point glass composition, glass powder 7
0 to 95% by weight, and 5 to 30% by weight of filler powder.
（作 用）
ガラス粉末はＰｂＯ，Ｂ、、０１． Ｓｉｎ、、 ｌＱ
、０１、Ｂｉ２Ｏ，。(Function) The glass powder is PbO, B, 01. Sin,, lQ
,01,Bi2O,.
およびＬｉ、 ０１Ｎａ２０のいずれか一方または両方
からなるガラス組成物に対しＦ−を添加してなるもので
あり、これらからなるガラスは３７０℃以下の軟化点を
有している。しかしながら、αにおいては１１０〜１３
５ Ｘ ＩＰ’／”Ｃであるため、αが８８〜１００×
１０−’／”Ｃの照明用ガラス部材とは整合性の点で一
致しない。It is made by adding F- to a glass composition consisting of either or both of Li, 01Na20 and Li, and the glass made of these has a softening point of 370°C or less. However, at α, it is 110 to 13
5 × IP'/”C, so α is 88 to 100 ×
It does not match the lighting glass member of 10-'/''C in terms of consistency.
したがって、小さいαを有し、しかも４５０℃の封着温
度で変化しないフィラー粉末を適当量混合してαを調整
するものである。このフィラー粉末としては特に珪酸ジ
ルコニウムが効果的であった。Therefore, α is adjusted by mixing an appropriate amount of filler powder that has a small α and does not change at a sealing temperature of 450°C. Zirconium silicate was particularly effective as this filler powder.
ガラス粉末におけるどはＰｂＦ、等の弗化物として添加
され、ガラス中には他の＋イオンと化合した形で−イオ
ンとして検出される。また、このＦ−はガラス中にコロ
イド状として存在し、封着部を白色に発色させるととも
に、粘性を下げ濡れ性を向りさせる作用を有する。Fluorides such as PbF are added to glass powder, and are detected in the glass as - ions in combination with other + ions. Further, this F- exists in the form of a colloid in the glass, and has the effect of causing the sealed portion to develop a white color, as well as lowering the viscosity and improving the wettability.
（実施例）
以下、本発明の詳細を一実施例について説明する。軟化
点３７０℃以下のＰｂＯ−Ｂ、Ｏ１系低融点ガラスを形
成するためのガラス粉末は重量百分率でＰｂＯ７５〜９
０％、Ｂ、０．５〜２０％、ＳｉＯ２０．５〜５％、＾
ｎ２０゜０．５〜３％、Ｂｉ２Ｏ，，０，５〜２％、Ｌ
ｉ、０． Ｎａ、Ｏは合量で０．５〜２％、Ｆ−２〜１
２％であり、このガラス粉末７０〜９５重量％と、残余
をフィラー粉末としたたとえば珪酸ジルコニウム５〜３
０重量％と、によって封着用ガラス組成物が構成される
。欣に各組成の限定理由は以下の通りである。 ＰｂＯ
が７５％を下回ると流動性が劣り、ガラスの被封着面を
濡らさずその強度および気密性を損なう。また９０％を
上回るとαが大となりかつ濡れ性が低下する。Ｂ、０．
が５％を下回ると溶融性が悪く、また２０％を上回ると
流動性が低下するａ ＳｚＯ，が０．５％を下回ると流
動性、耐水性が低下し、５％を上回ると軟化温度が上昇
し溶融性が悪化する。＾Ｑ、０．が０．５％を下回ると
Ｓｉｎ、と同じく耐候性が低下し、３％を上回ると同様
に溶融性が悪化する。 Ｂｉ、Ｏ，は０．５％を下回る
と同じく耐候性が低下し、また２％を上回ると溶融性が
悪化する。しｉ、、０． Ｎａ、Ｏは溶融性を促進させ
るために加えるが０．５％を下回ると効果がなく、２％
を上回ると耐候性が低下する。Ｆ−４Ｌ）：記ガラス組
成物に対し２〜１２％添加させたが２％を下回ると白色
に発色せず効果がないが１２％を上回ると、蒸発揮散し
てしまい無駄である。(Example) Hereinafter, details of the present invention will be described with reference to an example. The glass powder for forming PbO-B, O1-based low melting point glass with a softening point of 370°C or less is PbO75 to 9 in weight percentage.
0%, B, 0.5-20%, SiO20.5-5%, ^
n20゜0.5-3%, Bi2O, 0.5-2%, L
i, 0. Total amount of Na and O is 0.5 to 2%, F-2 to 1
2%, and 70 to 95% by weight of this glass powder and the remainder as filler powder, for example, 5 to 3% of zirconium silicate.
The sealing glass composition is composed of 0% by weight. The reasons for limiting each composition are as follows. PbO
If it is less than 75%, the fluidity is poor and the glass surface to be sealed is not wetted, impairing its strength and airtightness. Moreover, when it exceeds 90%, α becomes large and wettability decreases. B, 0.
If SzO is less than 5%, the meltability will be poor, and if it exceeds 20%, the fluidity will be reduced. It increases and the meltability deteriorates. ^Q, 0. If it is less than 0.5%, the weather resistance will deteriorate like Sin, and if it exceeds 3%, the meltability will similarly deteriorate. If Bi, O, is less than 0.5%, weather resistance similarly decreases, and if it exceeds 2%, meltability deteriorates. Shii,,0. Na and O are added to promote melting properties, but they have no effect if less than 0.5%, and 2%
If it exceeds , weather resistance decreases. F-4L): It was added in an amount of 2 to 12% to the glass composition, but if it is less than 2%, it will not develop a white color and will not be effective, but if it exceeds 12%, it will evaporate and transpire, which is wasteful.
以上の組成からなるガラス粉末のαを照明用ガラスと整
合するに適したαに調整するため混合するフィラー粉末
は５％を下回ると目的とするαの調整が得られず、また
３０％を一ヒ回ると流動性が低下して封着を困難とする
。If the filler powder that is mixed in order to adjust the α of the glass powder having the above composition to an α suitable for matching with lighting glass is less than 5%, the desired α adjustment cannot be obtained, and if the filler powder is less than 5%, If it turns too much, the fluidity decreases and sealing becomes difficult.
次表は本発明者の行った実験例の一部を示すもので、試
料＆１〜４は本発明の範囲内における好結果を示すもの
で、＆５はフィラー粉末の比率過多に起因して目的を達
成し得なかった参−例である。The following table shows some of the experimental examples conducted by the present inventor. Samples &1 to 4 show good results within the scope of the present invention, and sample &5 fails to meet the objective due to an excessive proportion of filler powder. This is an example of something that could not be achieved.
まず、表に示す組成となるように各原料を秤量。First, weigh each raw material so that it has the composition shown in the table.
混合し白金ルツボ中に収容し、電気炉中で１ 、０００
〜１ 、１００℃１〜２時間攪拌、溶融した０次にこの
溶融ガラスをフレーク状に成形、冷却、ポールミルで平
均粒径１０〜１５ミクロンに粉砕し、これに同程度粒度
のフィラー粉末をバインダとともにボールミルに入れ混
合してペーストを作成した。しかるのち、このペースト
をソーダライムガラス板に塗布、さらにその上部に照明
用ガラス部材を載置、自然乾燥後電気炉中で２００℃、
１０分間放置、さらに４５０℃、１０分間の加熱を行っ
た。Mixed, placed in a platinum crucible, and heated in an electric furnace for 1,000
~1, stirred at 100°C for 1 to 2 hours, melted. Next, this molten glass was molded into flakes, cooled, and ground to an average particle size of 10 to 15 microns in a Pall mill. Filler powder of similar particle size was added to this as a binder. They were mixed together in a ball mill to create a paste. After that, this paste was applied to a soda lime glass plate, a lighting glass member was placed on top of it, and after air drying, it was heated at 200°C in an electric furnace.
The mixture was left to stand for 10 minutes, and then heated at 450° C. for 10 minutes.
なお、ソーダライムガラス板に換えて照明用金属板を用
いたが同様の結果が得られた。すなわち、表に示すとお
り、濡れ性は十分に良好でガラス対ガラス、金属対ガラ
スとの整合性はもち論、ガラス対セラミックスとの整合
性も良好で、しかも、光を効果的に反射または拡散させ
る白色に発色する封着用ガラス組成物を得ることができ
た。Note that similar results were obtained when a metal plate for lighting was used instead of the soda lime glass plate. In other words, as shown in the table, the wettability is sufficiently good, and the compatibility with glass to glass, metal to glass, and glass to ceramics is also good, and moreover, it reflects or diffuses light effectively. It was possible to obtain a sealing glass composition that developed a white color.
（以下余白）
〔発明の効果〕
本発明は以上詳述したように軟化点３７０’Ｃ以下のＰ
ｂＯ−ａ、ｏ、系の低融点ガラス組成物でガラス粉末７
０ないし９５重量％と、フィラー粉末５ないし３０重量
％からなる封着用ガラス組成物であるから、４５０℃以
下の温度で封着が可能となり、かつ被封着物との整合性
もすこぶる良好となり、特に照明用の封着ガラスとして
封着部を白色に発色させることにより照度の向上に寄与
し、また美観をも損なうことのないすぐれた利点を有す
る。(The following is a blank space) [Effects of the Invention] As detailed above, the present invention provides P with a softening point of 370'C or less.
Glass powder 7 with a low melting point glass composition of the bO-a, o, system
Since the glass composition for sealing is composed of 0 to 95% by weight of filler powder and 5 to 30% by weight of filler powder, it is possible to seal at a temperature of 450°C or less, and the compatibility with the object to be sealed is very good. In particular, as a sealing glass for lighting, it contributes to improving illuminance by coloring the sealed portion white, and also has the excellent advantage of not impairing the aesthetic appearance.
Claims (3)
融点ガラス組成物でガラス粉末７０ないし９５重量％と
、フィラー粉末５ないし３０重量％からなることを特徴
とする封着用ガラス組成物。(1) A glass composition for sealing, which is a PbO-B_2O_3-based low melting point glass composition having a softening point of 370° C. or less and comprising 70 to 95% by weight of glass powder and 5 to 30% by weight of filler powder.
、Ｂ＿２Ｏ＿３ ５〜２０％、ＳｉＯ＿２ ０．５〜５
％、Ａｌ＿２Ｏ＿３ ０．５〜３％、Ｂｉ＿２Ｏ＿３
０．５〜２％、Ｌｉ＿２Ｏ、Ｎａ＿２Ｏのいずれか一方
または合量で０．５〜２％からなるガラス組成物に対し
Ｆ＾−２〜１２％を添加してなることを特徴とする特許
請求の範囲第１項記載の封着用ガラス組成物。(2) Glass powder is PbO 75-90% by weight percentage
, B_2O_3 5-20%, SiO_2 0.5-5
%, Al_2O_3 0.5-3%, Bi_2O_3
A patent claim characterized in that F^-2 to 12% is added to a glass composition consisting of 0.5 to 2%, Li_2O, Na_2O or the total amount of 0.5 to 2%. The sealing glass composition according to item 1.
特徴とする特許請求の範囲第１項記載の封着用ガラス組
成物。(3) The sealing glass composition according to claim 1, wherein the filler powder is made of zirconium silicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP108887A JPS63170241A (en) | 1987-01-08 | 1987-01-08 | Glass composition for sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP108887A JPS63170241A (en) | 1987-01-08 | 1987-01-08 | Glass composition for sealing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63170241A true JPS63170241A (en) | 1988-07-14 |
| JPH0461824B2 JPH0461824B2 (en) | 1992-10-02 |
Family
ID=11491743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP108887A Granted JPS63170241A (en) | 1987-01-08 | 1987-01-08 | Glass composition for sealing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63170241A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040868C (en) * | 1992-11-11 | 1998-11-25 | E·I·内穆尔杜邦公司 | Partially crystallizable low melting glass |
| JP2006512275A (en) * | 2003-01-03 | 2006-04-13 | バッテル メモリアル インスティチュート | Glass ceramic material and manufacturing method thereof |
| CN112299720A (en) * | 2020-11-16 | 2021-02-02 | 成都光明光电有限责任公司 | Low temperature sealing glass |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5747743A (en) * | 1980-07-31 | 1982-03-18 | Ibm | Amorphous seal glass |
| JPS5939379A (en) * | 1982-08-26 | 1984-03-03 | 新神戸電機株式会社 | Exhaust collector |
| JPS60103050A (en) * | 1983-11-04 | 1985-06-07 | Futaba Corp | Glass composition for seal bonding |
| JPS62270440A (en) * | 1986-05-16 | 1987-11-24 | Toshiba Glass Co Ltd | Glass composition for sealing |
-
1987
- 1987-01-08 JP JP108887A patent/JPS63170241A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5747743A (en) * | 1980-07-31 | 1982-03-18 | Ibm | Amorphous seal glass |
| JPS5939379A (en) * | 1982-08-26 | 1984-03-03 | 新神戸電機株式会社 | Exhaust collector |
| JPS60103050A (en) * | 1983-11-04 | 1985-06-07 | Futaba Corp | Glass composition for seal bonding |
| JPS62270440A (en) * | 1986-05-16 | 1987-11-24 | Toshiba Glass Co Ltd | Glass composition for sealing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040868C (en) * | 1992-11-11 | 1998-11-25 | E·I·内穆尔杜邦公司 | Partially crystallizable low melting glass |
| JP2006512275A (en) * | 2003-01-03 | 2006-04-13 | バッテル メモリアル インスティチュート | Glass ceramic material and manufacturing method thereof |
| CN112299720A (en) * | 2020-11-16 | 2021-02-02 | 成都光明光电有限责任公司 | Low temperature sealing glass |
| CN112299720B (en) * | 2020-11-16 | 2022-04-12 | 成都光明光电有限责任公司 | Low temperature sealing glass |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0461824B2 (en) | 1992-10-02 |
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