GB563511A - Improvements in and relating to electric contacting elements - Google Patents
Improvements in and relating to electric contacting elementsInfo
- Publication number
- GB563511A GB563511A GB3068/43A GB306843A GB563511A GB 563511 A GB563511 A GB 563511A GB 3068/43 A GB3068/43 A GB 3068/43A GB 306843 A GB306843 A GB 306843A GB 563511 A GB563511 A GB 563511A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- copper
- effect
- feb
- pressed
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
- Contacts (AREA)
Abstract
563,511. Alloys. MALLORY METALLURGICAL PRODUCTS, Ltd. Feb. 25, 1943, No. 3068. Convention date, Feb. 25, 1942. [Classes 72 and 82 (i)] An electric contacting .element comprises a compact bonded mass of pressed and sintered metal powder composed of silver with up to 15 per cent of copper. The mass may also contain a total amount of 0.1 to 10 per cent of one or more of the metals iron, chromium, nickel, cobalt. The powdered alloy or mixed powdered metals are pressed, sintered and repressed to increase the density. The compacted body is then heated below the melting- point of silver, e.g. to a temperature between 800‹-800‹ C. for 2-16 hours, to effect recrystallisation and grain growth therein and to effect the solid solution of a portion of the copper in the silver, and is then quenched and finally aged, e.g. at a temperature between 200‹ and 400‹ C. for ¢-10 hours, to effect precipitation of at least part of the copper from the solid solution.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US563511XA | 1942-02-25 | 1942-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB563511A true GB563511A (en) | 1944-08-17 |
Family
ID=22003833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3068/43A Expired GB563511A (en) | 1942-02-25 | 1943-02-25 | Improvements in and relating to electric contacting elements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB563511A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2671953A (en) * | 1948-07-23 | 1954-03-16 | Fansteel Metallurgical Corp | Metal body of high porosity |
| EP0338401A1 (en) * | 1988-04-16 | 1989-10-25 | DODUCO GMBH + Co Dr. Eugen DÀ¼rrwächter | Powder-metallurgical process for the production of a semi-finished product for electrical contacts made from a composite material based on silver and iron |
| WO1996026526A1 (en) * | 1995-02-24 | 1996-08-29 | Mabuchi Motor Co., Ltd. | Sliding contact material, clad composite material, commutator employing said material and direct current motor employing said commutator |
-
1943
- 1943-02-25 GB GB3068/43A patent/GB563511A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2671953A (en) * | 1948-07-23 | 1954-03-16 | Fansteel Metallurgical Corp | Metal body of high porosity |
| EP0338401A1 (en) * | 1988-04-16 | 1989-10-25 | DODUCO GMBH + Co Dr. Eugen DÀ¼rrwächter | Powder-metallurgical process for the production of a semi-finished product for electrical contacts made from a composite material based on silver and iron |
| WO1996026526A1 (en) * | 1995-02-24 | 1996-08-29 | Mabuchi Motor Co., Ltd. | Sliding contact material, clad composite material, commutator employing said material and direct current motor employing said commutator |
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