GB463889A - Improvements in or relating to intermediate glasses for sealing conductors into quartz vessels - Google Patents
Improvements in or relating to intermediate glasses for sealing conductors into quartz vesselsInfo
- Publication number
- GB463889A GB463889A GB228536A GB228536A GB463889A GB 463889 A GB463889 A GB 463889A GB 228536 A GB228536 A GB 228536A GB 228536 A GB228536 A GB 228536A GB 463889 A GB463889 A GB 463889A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crucible
- tungsten
- batch
- molybdenum
- per cent
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent 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
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/04—Joining glass to metal by means of an interlayer
- C03C27/042—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts
- C03C27/044—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts of glass, glass-ceramic or ceramic material only
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container 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)
- Glass Compositions (AREA)
Abstract
463,889. Glass manufacture. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand- Ges. f³r Elektrische Gl³hlampen) Jan. 24, 1936, Nos. 2285 and 7525. Drawings to Specification. [Class 56] [Also in Group XXXVI] An intermediate glass or vitreous body, for sealing a conductor of tungsten, molybdenum, or like metal into a quartz vessel, is composed of 65-95 per cent of silica, 4-20 per cent. of alumina, and 0-30 per cent. of an alkalineearth oxide, preferably calcium oxide or barium oxide or both together. Compositions of a number of glasses with their expansion co-efficients and softening temperatures are given in the Specification. The batch may be melted in a crucible of refractory metal, particularly of tungsten or molybdenum, the crucible being surrounded by a neutral or reducing atmosphere when these metals are used. Alternatively, the batch is not melted but is sintered to form a mass of the required shape. In this case, a crucible is not required, the batch being compressed in moulds, or formed into a slurry and cast in the required shape, and then heated until the material sinters into a coherent body which is preferably glazed, at least on one surface. The tungsten or molybdenum conductors may be placed in their proper positions in the shaped material before sintering, and the junction between the material and the metal conductor is heated so strongly that a vitreous layer is formed at the contact between them. Specification 2176/13, [Class 56], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB228536A GB463889A (en) | 1936-01-24 | 1936-01-24 | Improvements in or relating to intermediate glasses for sealing conductors into quartz vessels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB228536A GB463889A (en) | 1936-01-24 | 1936-01-24 | Improvements in or relating to intermediate glasses for sealing conductors into quartz vessels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB463889A true GB463889A (en) | 1937-04-08 |
Family
ID=9736860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB228536A Expired GB463889A (en) | 1936-01-24 | 1936-01-24 | Improvements in or relating to intermediate glasses for sealing conductors into quartz vessels |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB463889A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2517019A (en) * | 1948-09-24 | 1950-08-01 | Corning Glass Works | Graded seal |
| US2561520A (en) * | 1940-03-27 | 1951-07-24 | Hartford Nat Bank & Trust Co | Vacuumtight seal for electrical apparatus and method of forming such seals |
-
1936
- 1936-01-24 GB GB228536A patent/GB463889A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2561520A (en) * | 1940-03-27 | 1951-07-24 | Hartford Nat Bank & Trust Co | Vacuumtight seal for electrical apparatus and method of forming such seals |
| US2517019A (en) * | 1948-09-24 | 1950-08-01 | Corning Glass Works | Graded seal |
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