GB531688A - Improvements in and relating to the sealing into glass of objects consisting of tungsten - Google Patents
Improvements in and relating to the sealing into glass of objects consisting of tungstenInfo
- Publication number
- GB531688A GB531688A GB1922239A GB1922239A GB531688A GB 531688 A GB531688 A GB 531688A GB 1922239 A GB1922239 A GB 1922239A GB 1922239 A GB1922239 A GB 1922239A GB 531688 A GB531688 A GB 531688A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- tungsten
- sealing
- per cent
- july
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
-
- 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)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Glass Compositions (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
531,688. Glass manufacture. PHILIPS LAMPS, Ltd. July 1, 1939, No. 19222. Convention date, July 4, 1938. [Class 56] [Also in Group XXXVI] In the sealing of an article consisting of tungsten, especially tungsten wire, into glass having a content of alkaline oxide exceeding 1 per cent., the tungsten, during the sealing operation, is raised to such a temperature e.g. 1800‹C that the sealed-in object has a clean surface. The glass used preferably has a softening temperature exceeding 550‹C and an alumina content of 15-21 per cent. In an example, the glass contains 50 per cent. SiO 2 , 21 of B 2 O 3 , 16 of Al 2 O 3 , 3 of MgO, 2 of ZnO, 3 of CaO, 2 of BaO and 3 of Na 2 O. The glass is applied in a soft condition to the tungsten object e.g. with the aid of a rod which is made of the glass referred to, one end of which is heated in the proximity of the tungsten surface.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL88668 | 1938-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB531688A true GB531688A (en) | 1941-01-09 |
Family
ID=33095790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1922239A Expired GB531688A (en) | 1938-07-04 | 1939-07-01 | Improvements in and relating to the sealing into glass of objects consisting of tungsten |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH214491A (en) |
| DE (1) | DE1077840B (en) |
| FR (1) | FR859798A (en) |
| GB (1) | GB531688A (en) |
-
1939
- 1939-07-01 GB GB1922239A patent/GB531688A/en not_active Expired
- 1939-07-03 CH CH214491D patent/CH214491A/en unknown
- 1939-07-03 DE DEP2153D patent/DE1077840B/en active Pending
- 1939-07-03 FR FR859798D patent/FR859798A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH214491A (en) | 1941-04-30 |
| DE1077840B (en) | 1960-03-17 |
| FR859798A (en) | 1940-12-28 |
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