SE7506746L - WAY TO PRODUCE ELECTRICALLY CONDUCTIVE, COMPOSITE MATERIAL - Google Patents
WAY TO PRODUCE ELECTRICALLY CONDUCTIVE, COMPOSITE MATERIALInfo
- Publication number
- SE7506746L SE7506746L SE7506746A SE7506746A SE7506746L SE 7506746 L SE7506746 L SE 7506746L SE 7506746 A SE7506746 A SE 7506746A SE 7506746 A SE7506746 A SE 7506746A SE 7506746 L SE7506746 L SE 7506746L
- Authority
- SE
- Sweden
- Prior art keywords
- cadmium
- silver
- powder
- metal
- composite material
- Prior art date
Links
Classifications
-
- 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
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
-
- 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
- H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Switches (AREA)
- Conductive Materials (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The process for preparing an electrical contact material for use in medium-size power switches comprises mixing silver powder with cadmium oxide powder or cadmium powder, whereupon the mixed powders are compacted at approximately 800 kp/cm<2>, and the compact is heated in a reducing atmosphere to obtain a porous alloy of cadmium in silver, without melting the compacted components. The reduced compact is then heated in an oxidising atmosphere in order to reoxidise or oxidise the cadmium in its interior without a melting process. Alternatively, other metals, for example copper instead of silver, can be used in this process. It is also possible to admix an oxide of a third metal, for example lithium or another alkali metal in powdered form. A fourth metal can be added to achieve other desired properties of the material. The contacts are stamped, or are punched from the composite material and treated by further metallurgical techniques such as sintering or rolling, in order to prepare the final contact material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2664774A GB1469976A (en) | 1974-06-15 | 1974-06-15 | Method for producing an electrical power contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7506746L true SE7506746L (en) | 1976-02-23 |
| SE427142B SE427142B (en) | 1983-03-07 |
Family
ID=10246950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7506746A SE427142B (en) | 1974-06-15 | 1975-06-12 | SET TO MAKE A CONTACT MATERIAL OF SILVER WITH CADMIUM, TIN OR ZINC |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS5111193A (en) |
| BE (1) | BE830241A (en) |
| CH (1) | CH618808A5 (en) |
| DE (1) | DE2521585A1 (en) |
| DK (1) | DK267375A (en) |
| FR (1) | FR2274999A1 (en) |
| GB (1) | GB1469976A (en) |
| IT (1) | IT1038958B (en) |
| MX (1) | MX3419E (en) |
| SE (1) | SE427142B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4095977A (en) * | 1976-08-13 | 1978-06-20 | Square D Company | Material for making electrical contacts, process for making materials, and contacts made with the material |
| JPS5459377A (en) * | 1977-10-14 | 1979-05-12 | Kiyokuyou Kk | Skin peeling method of fishes |
| JPS6219072A (en) * | 1985-07-16 | 1987-01-27 | Tsuda Tekko Kk | Method of polishing onion |
| JPH046694U (en) * | 1990-05-07 | 1992-01-22 | ||
| US9028586B2 (en) | 2011-12-29 | 2015-05-12 | Umicore | Oxidation method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1397319A (en) * | 1972-08-25 | 1975-06-11 | Square D Co | Electrically conductive materials |
-
1974
- 1974-06-15 GB GB2664774A patent/GB1469976A/en not_active Expired
-
1975
- 1975-05-15 DE DE19752521585 patent/DE2521585A1/en not_active Ceased
- 1975-06-03 FR FR7517263A patent/FR2274999A1/en active Granted
- 1975-06-09 CH CH738075A patent/CH618808A5/en not_active IP Right Cessation
- 1975-06-11 IT IT2428175A patent/IT1038958B/en active
- 1975-06-12 SE SE7506746A patent/SE427142B/en not_active IP Right Cessation
- 1975-06-13 MX MX10022175U patent/MX3419E/en unknown
- 1975-06-13 BE BE157335A patent/BE830241A/en not_active IP Right Cessation
- 1975-06-13 JP JP7181075A patent/JPS5111193A/en active Granted
- 1975-06-13 DK DK267375A patent/DK267375A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5111193A (en) | 1976-01-29 |
| FR2274999B1 (en) | 1978-09-22 |
| FR2274999A1 (en) | 1976-01-09 |
| MX3419E (en) | 1980-11-13 |
| JPS5416442B2 (en) | 1979-06-22 |
| DE2521585A1 (en) | 1976-01-02 |
| IT1038958B (en) | 1979-11-30 |
| BE830241A (en) | 1975-10-01 |
| DK267375A (en) | 1975-12-16 |
| GB1469976A (en) | 1977-04-14 |
| SE427142B (en) | 1983-03-07 |
| CH618808A5 (en) | 1980-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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