GB1180777A - Improvements in and relating to hermetic metal-to-glass seals, to a method of making such seals and to capacitors using such seals. - Google Patents
Improvements in and relating to hermetic metal-to-glass seals, to a method of making such seals and to capacitors using such seals.Info
- Publication number
- GB1180777A GB1180777A GB5374767A GB5374767A GB1180777A GB 1180777 A GB1180777 A GB 1180777A GB 5374767 A GB5374767 A GB 5374767A GB 5374767 A GB5374767 A GB 5374767A GB 1180777 A GB1180777 A GB 1180777A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- metal
- seals
- terminal
- expansion
- 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
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
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/02—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing by fusing glass directly to metal
-
- 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
- C03C29/00—Joining metals with the aid of glass
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Joining Of Glass To Other Materials (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
1,180,777. Glass - - to - metal seals. ISOTRONICS Inc. 27 Nov., 1967, No. 53747/67. Heading C1M. An hermetic seal component, especially for use with capacitors, comprises a terminal of tantalum or niobium extending through a mass of glass fused thereto and forming a positive meniscus with respect to the terminal, the glass having a coefficient of expansion greater than that of the metal of the terminal, the surface of the metal terminal being substantially free of any oxide so that after assembly of the seal an electrolytic oxide may be formed thereon. Preferably the glass has a coefficient of expansion of 9 x 10<-6>/‹ C. In the preferred form of the invention the seal component is also sealed into a metal eyelet, of silver or silver-clad steel or stainless steel, the metal of the eyelet having a coefficient of expansion at least as great as that of the glass. If desired, the eyelet may be very thin so that it follows the expansion and contraction characteristics of the glass to which it is bonded. To obtain a good hermetic seal the components are heated to a temperature of 1900‹ F. in an inert atmosphere, and after cooling to room temperature in that atmosphere an oxide is electrolytically formed on the metal terminal at the glass-terminal interface. A suitable sealing glass is a potash-soda-lead or metallic-oxide type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5374767A GB1180777A (en) | 1967-11-27 | 1967-11-27 | Improvements in and relating to hermetic metal-to-glass seals, to a method of making such seals and to capacitors using such seals. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5374767A GB1180777A (en) | 1967-11-27 | 1967-11-27 | Improvements in and relating to hermetic metal-to-glass seals, to a method of making such seals and to capacitors using such seals. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1180777A true GB1180777A (en) | 1970-02-11 |
Family
ID=10468846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5374767A Expired GB1180777A (en) | 1967-11-27 | 1967-11-27 | Improvements in and relating to hermetic metal-to-glass seals, to a method of making such seals and to capacitors using such seals. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1180777A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556741A (en) * | 2014-12-26 | 2015-04-29 | 中国航天科技集团公司第六研究院第十一研究所 | Non-matched sealing method for high-temperature alloy and glass |
-
1967
- 1967-11-27 GB GB5374767A patent/GB1180777A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556741A (en) * | 2014-12-26 | 2015-04-29 | 中国航天科技集团公司第六研究院第十一研究所 | Non-matched sealing method for high-temperature alloy and glass |
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