GB1418025A - Electrical contact materials - Google Patents

Electrical contact materials

Info

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
Application number
GB1218972A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric USA Inc
Original Assignee
Square D Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Square D Co filed Critical Square D Co
Priority to GB1218972A priority Critical patent/GB1418025A/en
Priority to US05/620,909 priority patent/US4011052A/en
Priority to US05/622,786 priority patent/US4011053A/en
Publication of GB1418025A publication Critical patent/GB1418025A/en
Priority to US05/863,543 priority patent/USRE29986E/en
Priority to US05/863,542 priority patent/USRE30052E/en
Expired legal-status Critical Current

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.
GB1218972A 1972-03-15 1972-03-15 Electrical contact materials Expired GB1418025A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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