GB381576A - Improvements in and relating to electrical apparatus and electrodes therefor - Google Patents
Improvements in and relating to electrical apparatus and electrodes thereforInfo
- Publication number
- GB381576A GB381576A GB14066/32A GB1406632A GB381576A GB 381576 A GB381576 A GB 381576A GB 14066/32 A GB14066/32 A GB 14066/32A GB 1406632 A GB1406632 A GB 1406632A GB 381576 A GB381576 A GB 381576A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- vacuo
- silver
- filling
- copper
- 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 abstract 4
- 239000002184 metal Substances 0.000 abstract 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 2
- 229910052802 copper Inorganic materials 0.000 abstract 2
- 239000010949 copper Substances 0.000 abstract 2
- 229910052709 silver Inorganic materials 0.000 abstract 2
- 239000004332 silver Substances 0.000 abstract 2
- 238000005245 sintering Methods 0.000 abstract 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 230000001066 destructive effect Effects 0.000 abstract 1
- 239000007772 electrode material Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/39—Selection of materials for electrodes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
An electrode subject to destructive arcing in operation comprises a porous body of a metal of high melting point in the pores of which is embedded a metal of high thermal and electrical conductivity, amounting to at least 25 per cent of the electrode material. Preferably lightly-pounded tungsten powder is sintered in vacuo and the interstices remaining in the body are filled with the other metal which may be copper, silver, or a nobler metal. Where silver is used as the filling the tungsten powder is superficially carbonized by heating carbon present in the vacuum furnace, the body then being soldered to its carrier. In the case of copper, the body is cast on to its carrier in vacuo in the manufacture thereof. The percentage of filling may be as high as 50 and is determined by the pressure applied to the powder during sintering and by the sintering temperature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE373195X | 1930-02-17 | ||
| DE381576X | 1930-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB381576A true GB381576A (en) | 1932-10-07 |
Family
ID=31888934
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5052/31A Expired GB373195A (en) | 1930-02-17 | 1931-02-17 | Improvements in and relating to electric switch contacts |
| GB14066/32A Expired GB381576A (en) | 1930-02-17 | 1931-07-07 | Improvements in and relating to electrical apparatus and electrodes therefor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5052/31A Expired GB373195A (en) | 1930-02-17 | 1931-02-17 | Improvements in and relating to electric switch contacts |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE377423A (en) |
| FR (1) | FR711383A (en) |
| GB (2) | GB373195A (en) |
-
0
- BE BE377423D patent/BE377423A/xx unknown
-
1931
- 1931-02-17 GB GB5052/31A patent/GB373195A/en not_active Expired
- 1931-02-17 FR FR711383D patent/FR711383A/en not_active Expired
- 1931-07-07 GB GB14066/32A patent/GB381576A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB373195A (en) | 1932-05-17 |
| BE377423A (en) | |
| FR711383A (en) | 1931-09-07 |
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