GB1397131A - Electrical contact material - Google Patents

Electrical contact material

Info

Publication number
GB1397131A
GB1397131A GB3046172A GB3046172A GB1397131A GB 1397131 A GB1397131 A GB 1397131A GB 3046172 A GB3046172 A GB 3046172A GB 3046172 A GB3046172 A GB 3046172A GB 1397131 A GB1397131 A GB 1397131A
Authority
GB
United Kingdom
Prior art keywords
potassium
gold
june
former
nickel
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
GB3046172A
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB3046172A priority Critical patent/GB1397131A/en
Priority to DE19732332710 priority patent/DE2332710A1/en
Priority to FR7323826A priority patent/FR2191231B1/fr
Publication of GB1397131A publication Critical patent/GB1397131A/en
Priority to US05/621,241 priority patent/US4081644A/en
Priority to HK15676A priority patent/HK15676A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Contacts (AREA)

Abstract

1397131 Switch contacts PLESSEY CO Ltd 21 June 1973 [29 June 1972] 30461/72 Heading H1N [Also in Divisions B2 and C7] An electrical contact material which has improved arc-erosion characteristics and is especially suited for contacts used in switching capacitive loads consists of a high electronic work function material which is one or more of the precious metals gold, palladium, ruthenium, platinum, rhodium or rhenium, or a silverpalladium alloy, together with up to 3 wt. per cent of a low electronic work function material which is lithium, potassium, rubidium, ceasium, barium, cadmium sulphide or sodium chloride, the latter materials may be distributed uniformly throughout the former, or may be at discrete sites on the surface of the former. In examples a mixture of gold and potassium, together with nickel as a hardener, is electrodeposited on to a nickel-iron substrate to form a layer in which potassium is distributed in the gold; in a further embodiment, this material is then boiled in saturated salt solution to provide a layer of sodium chloride crystals over the goldpotassium deposit.
GB3046172A 1972-06-29 1972-06-29 Electrical contact material Expired GB1397131A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB3046172A GB1397131A (en) 1972-06-29 1972-06-29 Electrical contact material
DE19732332710 DE2332710A1 (en) 1972-06-29 1973-06-27 MATERIAL FOR ELECTRICAL CONTACTS
FR7323826A FR2191231B1 (en) 1972-06-29 1973-06-29
US05/621,241 US4081644A (en) 1972-06-29 1975-10-09 Electrical contact material
HK15676A HK15676A (en) 1972-06-29 1976-03-18 An electrical contact material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3046172A GB1397131A (en) 1972-06-29 1972-06-29 Electrical contact material

Publications (1)

Publication Number Publication Date
GB1397131A true GB1397131A (en) 1975-06-11

Family

ID=10308067

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3046172A Expired GB1397131A (en) 1972-06-29 1972-06-29 Electrical contact material

Country Status (4)

Country Link
DE (1) DE2332710A1 (en)
FR (1) FR2191231B1 (en)
GB (1) GB1397131A (en)
HK (1) HK15676A (en)

Also Published As

Publication number Publication date
DE2332710A1 (en) 1974-01-10
HK15676A (en) 1976-03-26
FR2191231A1 (en) 1974-02-01
FR2191231B1 (en) 1976-11-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee