GB870767A - Process for the manufacture of solderable shaped electric contact elements of silver-cadmium oxide - Google Patents
Process for the manufacture of solderable shaped electric contact elements of silver-cadmium oxideInfo
- Publication number
- GB870767A GB870767A GB481759A GB481759A GB870767A GB 870767 A GB870767 A GB 870767A GB 481759 A GB481759 A GB 481759A GB 481759 A GB481759 A GB 481759A GB 870767 A GB870767 A GB 870767A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- solderable
- cadmium
- crucible
- oxidation
- 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
-
- 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
- H01H1/023—Composite material having a noble metal as the basic material
- H01H1/0231—Composite material having a noble metal as the basic material provided with a solder layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Manufacture Of Switches (AREA)
Abstract
870,767. Making electric contacts. DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT. Feb. 11, 1959, No. 4817/59. Class 83 (2). In the manufacture of solderable electriccontact elements of silver-cadmium oxide by oxidation of the cadmium in a silver-cadmium alloy, those surfaces of the element which are subsequently to be soldered are protected against oxidation during the oxidation treatment. A moulded element of silver-cadmium is partially enclosed in a crucible of refractory material and is oxidized by calcining in air at 700-850 C. The surface of the element which projects into the crucible is protected from oxidation; an inert or reducing gas may be introduced into the crucible. Alternatively, the solderable surface of the element may be protected by a gas-tight layer of a ceramic material such as aluminium oxide applied by a flame-spraying process. In another embodiment two sheet-like elements of silver-cadmium alloy are superposed with their solderable surfaces in contact. These surfaces are sealed around the edges, for example, by welding, and the elements are then calcined in oxygen for 70 hours at 800 C. The two sheets are then separated.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED26772A DE1055147B (en) | 1957-11-05 | 1957-11-05 | Process for the production of solderable molded bodies from silver-cadmium-oxide for contact purposes |
| GB481759A GB870767A (en) | 1959-02-11 | 1959-02-11 | Process for the manufacture of solderable shaped electric contact elements of silver-cadmium oxide |
| FR788108A FR1218150A (en) | 1959-02-11 | 1959-03-02 | Process for preparing weldable shaped bodies, in particular for electrical contacts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB481759A GB870767A (en) | 1959-02-11 | 1959-02-11 | Process for the manufacture of solderable shaped electric contact elements of silver-cadmium oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB870767A true GB870767A (en) | 1961-06-21 |
Family
ID=9784366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB481759A Expired GB870767A (en) | 1957-11-05 | 1959-02-11 | Process for the manufacture of solderable shaped electric contact elements of silver-cadmium oxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB870767A (en) |
-
1959
- 1959-02-11 GB GB481759A patent/GB870767A/en not_active Expired
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