GB1418025A - Electrical contact materials - Google Patents
Electrical contact materialsInfo
- Publication number
- GB1418025A GB1418025A GB1218972A GB1218972A GB1418025A GB 1418025 A GB1418025 A GB 1418025A GB 1218972 A GB1218972 A GB 1218972A GB 1218972 A GB1218972 A GB 1218972A GB 1418025 A GB1418025 A GB 1418025A
- Authority
- GB
- United Kingdom
- Prior art keywords
- caesuim
- silver
- mercury
- cadmium
- sieving
- 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
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0021—Matrix based on noble metals, Cu or alloys thereof
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1078—Alloys containing non-metals by internal oxidation of material in solid state
-
- 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
- H01H1/02372—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te
- H01H1/02374—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te containing as major component CdO
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
1418025 Silver-base electrical contact materials SQUARE D CO 9 March 1973 [15 March 1972] 12189/72 Headings C7A and C7D An electrical contact material consists by weight of:- 2.5 to 20% cadmium oxide not more than 3% caesuim and optionally up to 3% mercury the balance being silver. Caesuim-containing materials are produced by mixing cadmium oxide and silver powders; adding a solution of a caesium compound to form a slurry; air drying the slurry at e.g. 60 C; sieving the dried powder mixture; compacting and sintering. Preferred caesuim compounds are caesuim nitrate, caesuim carbonate caesuim iodide in propanol. Mercury and caesuim-containing materials are produced by mixing cadmium oxide, mercuric oxide and silver powders; reducing the mixture in, e.g. hydrogen at 200-700‹C to produce a silver-cadmium; mercury alloy; internally oxidizing the cadmium; sieving the resulting mixture; incorporating a caesuim-compound solution fo form a slurry; airdrying and sieving the powder again; compacting and then sintering in a pressurized enclosure to prevent undesirable loss of mercury.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1218972A GB1418025A (en) | 1972-03-15 | 1972-03-15 | Electrical contact materials |
US05/620,909 US4011052A (en) | 1972-03-15 | 1975-10-08 | Electrical contact material and process |
US05/622,786 US4011053A (en) | 1972-03-15 | 1975-10-15 | Electrical contact material and process |
US05/863,543 USRE29986E (en) | 1972-03-15 | 1977-12-23 | Electrical contact material and process |
US05/863,542 USRE30052E (en) | 1972-03-15 | 1977-12-23 | Electrical contact material and process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1218972A GB1418025A (en) | 1972-03-15 | 1972-03-15 | Electrical contact materials |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1418025A true GB1418025A (en) | 1975-12-17 |
Family
ID=9999980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1218972A Expired GB1418025A (en) | 1972-03-15 | 1972-03-15 | Electrical contact materials |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1418025A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103706795A (en) * | 2013-12-30 | 2014-04-09 | 桂林电器科学研究院有限公司 | Preparation method of atomized silver and zinc oxide electrical contact materials containing additives |
-
1972
- 1972-03-15 GB GB1218972A patent/GB1418025A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103706795A (en) * | 2013-12-30 | 2014-04-09 | 桂林电器科学研究院有限公司 | Preparation method of atomized silver and zinc oxide electrical contact materials containing additives |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |