US2261348A - Manufacture of rectifier elements - Google Patents

Manufacture of rectifier elements Download PDF

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Publication number
US2261348A
US2261348A US238493A US23849338A US2261348A US 2261348 A US2261348 A US 2261348A US 238493 A US238493 A US 238493A US 23849338 A US23849338 A US 23849338A US 2261348 A US2261348 A US 2261348A
Authority
US
United States
Prior art keywords
metals
copper
manufacture
copper oxide
elements
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 - Lifetime
Application number
US238493A
Other languages
English (en)
Inventor
Doucot Roger
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.)
Hitachi Rail STS USA Inc
Original Assignee
Union Switch and Signal Inc
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 Union Switch and Signal Inc filed Critical Union Switch and Signal Inc
Application granted granted Critical
Publication of US2261348A publication Critical patent/US2261348A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D48/00—Individual devices not covered by groups H10D1/00 - H10D44/00
    • H10D48/01—Manufacture or treatment
    • H10D48/07—Manufacture or treatment of devices having bodies comprising cuprous oxide [Cu2O] or cuprous iodide [CuI]
    • H10D48/078—Treatment of the complete device, e.g. electroforming or ageing
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D48/00—Individual devices not covered by groups H10D1/00 - H10D44/00
    • H10D48/01—Manufacture or treatment
    • H10D48/07—Manufacture or treatment of devices having bodies comprising cuprous oxide [Cu2O] or cuprous iodide [CuI]
    • H10D48/071—Preparation of the foundation plate, preliminary treatment oxidation of the foundation plate or reduction treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S420/00—Alloys or metallic compositions
    • Y10S420/903—Semiconductive

Definitions

  • PatentedNom l 1941 UNITED STATE 2.261.348 MANUFACTURE OF RECTIFIER, ELEMENTS Roger Doucot,
  • the present invention relates to the manufacture of elements showing the phenomenon of asymmetric conductivity (rectifiers), for example, of the copper oxide type and has for its object to stabilise the resistance in the blocking direction and at the same time to enable the element's being exposed without deterioration to service voltages exceeding those which can be applied to such elements according to the present state of the art.
  • rectifiers for example, of the copper oxide type
  • a metal or number of metals belonging to the eighth group of the periodical classification of the elements is or are added, for example, iron, nickel, or cobalt, by direct incorporation resulting in a mixture, an alloy or even a compound, or furthermore, by being deposited on the surface oi the copper, which may for example be carried out electrolytically.
  • the incorporation of the foreign metal or metals can further be effected by hot decomposition of a salt, for example nitrate, which when heated yields an oxide which is thus incorporated fcr example in the copper oxide
  • a salt for example nitrate
  • the curve of the current in the blocking direction obtained by a predetermined constant voltage as a function of the time, that is to say the curve of the intensities passing from the copper to the oxide, shows a much more flattened attitude and clearly lower ordinates than the curve for elements produced by the customary process.
  • It is furthermore found that increased percentages of the metal or metals of the eighth group bring about a further reduction or" the value of the ordinates of this curve.
  • a copper oxide rectifier element having deposited'on the copper from which the element is formed one or more of the metals of the eighth periodic group.
  • a copper oxide rectifier element having I electrolytically deposited on the copper from which the element is formed one or more of the metals iron, nickel, or cobalt.

Landscapes

  • Rectifiers (AREA)
  • Compositions Of Oxide Ceramics (AREA)
US238493A 1938-04-20 1938-11-02 Manufacture of rectifier elements Expired - Lifetime US2261348A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR845071T 1938-04-20

Publications (1)

Publication Number Publication Date
US2261348A true US2261348A (en) 1941-11-04

Family

ID=9312698

Family Applications (1)

Application Number Title Priority Date Filing Date
US238493A Expired - Lifetime US2261348A (en) 1938-04-20 1938-11-02 Manufacture of rectifier elements

Country Status (3)

Country Link
US (1) US2261348A (fr)
FR (1) FR845071A (fr)
GB (1) GB521456A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701285A (en) * 1951-04-03 1955-02-01 Gen Electric Electric cutout
US2739276A (en) * 1951-02-23 1956-03-20 Gen Electric Copper oxide rectifier and method of making the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2739276A (en) * 1951-02-23 1956-03-20 Gen Electric Copper oxide rectifier and method of making the same
US2701285A (en) * 1951-04-03 1955-02-01 Gen Electric Electric cutout

Also Published As

Publication number Publication date
GB521456A (en) 1940-05-22
FR845071A (fr) 1939-08-10

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