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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

    • 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
    • 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

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 [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee