GB948647A - Improvements in or relating to sintered bodies - Google Patents
Improvements in or relating to sintered bodiesInfo
- Publication number
- GB948647A GB948647A GB1176961A GB1176961A GB948647A GB 948647 A GB948647 A GB 948647A GB 1176961 A GB1176961 A GB 1176961A GB 1176961 A GB1176961 A GB 1176961A GB 948647 A GB948647 A GB 948647A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- sintering
- metal
- pict
- mould
- 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
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)
- Powder Metallurgy (AREA)
Abstract
<PICT:0948647/C1/1> <PICT:0948647/C1/2> <PICT:0948647/C1/3> A process for producing a sintered body from a composition comprising finely divided glass, preferably soft lead glass, and more than 8% but less than 12% by weight finely divided aluminium oxide, includes the steps of placing the composition in a shaped pressure mould, subjecting the mould to at least one pressing operation and to at least one sintering operation. The glass/alumina composition is preferably of uniform particle size and usefully 10 microns. Sintering may take place in a nitrogen atmosphere or a reducing flame at about 1200 DEG C., after which the mould is immediately pressed for a second time. The invention also includes attaching metal parts to the sintered body, wherein after the first pressing and sintering the formed body is immersed in a borax solution, dried and re-sintered. The metal inserts which may be wires are preferably copper coated or copper foil inserts may be used between the metal and the glass. The second sintering may be effected by radio-frequency heating. The metal to glass seal produced is claimed to be vacuum tight and employs alloys of iron, chromium and/or nickel. The order of assembly and dipping in borax may be raised. The invention is particularly described with reference to the vacuum tube components illustrated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1960S0067844 DE1261288B (en) | 1960-03-31 | 1960-03-31 | Vacuum-tight insulating sintered body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB948647A true GB948647A (en) | 1964-02-05 |
Family
ID=7499853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1176961A Expired GB948647A (en) | 1960-03-31 | 1961-03-30 | Improvements in or relating to sintered bodies |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1261288B (en) |
| GB (1) | GB948647A (en) |
| SE (1) | SE301856B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB477462A (en) * | 1936-06-30 | 1937-12-30 | Gen Electric Co Ltd | Improvements in or relating to metallic electric conductors sealed through quartz |
| DE754804C (en) * | 1940-03-28 | 1953-02-23 | Aeg | Melting iron-nickel alloys in glass |
| CH246111A (en) * | 1943-10-07 | 1946-12-15 | Fides Gmbh | Vacuum-tight implementation and process for their production. |
| DE905651C (en) * | 1944-11-12 | 1954-03-04 | Siemens Ag | Process for the production of a vacuum-tight connection between glass and metal |
| AT167194B (en) * | 1945-09-27 | 1950-11-25 | Siemens Ag | Process for the production of glass bodies with inserted metal parts |
| AT190233B (en) * | 1954-06-15 | 1957-06-25 | Alfred Dipl Ing Melamed | Process for producing a glass plate, a glass pane or the like with a vacuum-tight inserted glass tube |
| GB827844A (en) * | 1954-09-09 | 1960-02-10 | Alfredo Luigi Guiseppe Cianchi | Improvements in or relating to glass to metal seals |
-
1960
- 1960-03-31 DE DE1960S0067844 patent/DE1261288B/en active Pending
-
1961
- 1961-03-30 GB GB1176961A patent/GB948647A/en not_active Expired
- 1961-03-30 SE SE344861A patent/SE301856B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE301856B (en) | 1968-06-24 |
| DE1261288B (en) | 1968-02-15 |
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