GB560717A - Improvements in or relating to methods of making hermetic glass-to-metal seals - Google Patents
Improvements in or relating to methods of making hermetic glass-to-metal sealsInfo
- Publication number
- GB560717A GB560717A GB14125/42A GB1412542A GB560717A GB 560717 A GB560717 A GB 560717A GB 14125/42 A GB14125/42 A GB 14125/42A GB 1412542 A GB1412542 A GB 1412542A GB 560717 A GB560717 A GB 560717A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- silver
- plunger
- mould
- ring
- 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
- 229910052751 metal Inorganic materials 0.000 title abstract 6
- 239000002184 metal Substances 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 2
- 239000011521 glass Substances 0.000 abstract 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 3
- 238000001816 cooling Methods 0.000 abstract 3
- 229910052742 iron Inorganic materials 0.000 abstract 3
- 150000002739 metals Chemical class 0.000 abstract 3
- 229910052709 silver Inorganic materials 0.000 abstract 3
- 239000004332 silver Substances 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 abstract 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 1
- 239000004133 Sodium thiosulphate Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 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
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 238000005336 cracking Methods 0.000 abstract 1
- 229910000464 lead oxide Inorganic materials 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 abstract 1
- 238000007747 plating Methods 0.000 abstract 1
- 239000011591 potassium Substances 0.000 abstract 1
- 229910000027 potassium carbonate Inorganic materials 0.000 abstract 1
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 abstract 1
- 229910001950 potassium oxide Inorganic materials 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical class [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- 229910001948 sodium oxide Inorganic materials 0.000 abstract 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 abstract 1
- 235000019345 sodium thiosulphate Nutrition 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- PGWMQVQLSMAHHO-UHFFFAOYSA-N sulfanylidenesilver Chemical compound [Ag]=S PGWMQVQLSMAHHO-UHFFFAOYSA-N 0.000 abstract 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
- 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
- C03C27/046—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 metals, metal oxides or metal salts only
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Joining Of Glass To Other Materials (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
560,717. Glass manufacture. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 8, 1942, No. 14125. Convention date, Oct. 8, 1941. [Class 56] [Also in Group XXXVI] Oxidizable metals such as iron or steel are sealed into glass by coating them with silver, the thickness of the coating and the time of heating during sealing being such as to permit only such a small oxidation of the metals as to make a better seal than that provided by the uncoated metals. The silver film is preferably between .00004 and .00025 inches thick and an overcoating of black silver sulphide may be provided. The iron is degreased with sodium carbonate, etched and rinsed, and then plated in a striking solution containing silver and potassium cyanide and potassium carbonate. It is then transferred to a plating bath containing in addition sodium thiosulphate and ammonia. The glass consists of two parts silica and one part lead oxide with small proportions of aluminium, potassium and sodium oxides. The process is preferably carried out in a machine of the kind described in U.S.A. Specification 2,195,483 and consisting of a mould 20 and plunger 24. The mould supports the iron ring 2 and the silver-plated iron wires 5 which pass through a glass button and through the plunger. The plunger carries an exhaust tube 6 welded to the button and flared by a plunger 32. Pins 22 raise the ring above the mould so that the gas flames can play upon the ring without unduly heating the mould. To avoid cracking the glass upon cooling, the ring is cooled by streams of cold air at a quicker rate than the glass until they are both at the same temperature. The metal is then mildly heated to reduce its rate of cooling until the glass solidifies, when both metal and glass are allowed to complete their cooling at the same rate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US560717XA | 1941-10-08 | 1941-10-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB560717A true GB560717A (en) | 1944-04-18 |
Family
ID=22001973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14125/42A Expired GB560717A (en) | 1941-10-08 | 1942-10-08 | Improvements in or relating to methods of making hermetic glass-to-metal seals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB560717A (en) |
-
1942
- 1942-10-08 GB GB14125/42A patent/GB560717A/en not_active Expired
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