GB554645A - Improvements relating to the manufacture of alternating electric current rectifiers - Google Patents

Improvements relating to the manufacture of alternating electric current rectifiers

Info

Publication number
GB554645A
GB554645A GB5983/42A GB598342A GB554645A GB 554645 A GB554645 A GB 554645A GB 5983/42 A GB5983/42 A GB 5983/42A GB 598342 A GB598342 A GB 598342A GB 554645 A GB554645 A GB 554645A
Authority
GB
United Kingdom
Prior art keywords
manufacture
electric current
alternating electric
improvements relating
current rectifiers
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
GB5983/42A
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
Priority to GB5983/42A priority Critical patent/GB554645A/en
Publication of GB554645A publication Critical patent/GB554645A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/16—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising cuprous oxide or cuprous iodide
    • H01L21/161—Preparation of the foundation plate, preliminary treatment oxidation of the foundation plate, reduction treatment
    • H01L21/164—Oxidation and subsequent heat treatment of the foundation plate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104—Forming layers
    • H01L21/02365—Forming inorganic semiconducting materials on a substrate
    • H01L21/02518—Deposited layers
    • H01L21/02521—Materials
    • H01L21/02565—Oxide semiconducting materials not being Group 12/16 materials, e.g. ternary compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104—Forming layers
    • H01L21/02365—Forming inorganic semiconducting materials on a substrate
    • H01L21/02612—Formation types
    • H01L21/02614—Transformation of metal, e.g. oxidation, nitridation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Thermistors And Varistors (AREA)
  • Conductive Materials (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

554,645. Asymmetrically-conducting resistances. TOMLINSON, A. V. (Union Switch & Signal Co.). May 4, 1942, No. 5983. [Class 37] The copper plates of a rectifier are oxidized in an atmosphere containing a small percentage of chlorine. For example, plates are first heated in clean air and subsequently in an atmosphere containing not more than 0.01 per cent of chlorine.
GB5983/42A 1942-05-04 1942-05-04 Improvements relating to the manufacture of alternating electric current rectifiers Expired GB554645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5983/42A GB554645A (en) 1942-05-04 1942-05-04 Improvements relating to the manufacture of alternating electric current rectifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5983/42A GB554645A (en) 1942-05-04 1942-05-04 Improvements relating to the manufacture of alternating electric current rectifiers

Publications (1)

Publication Number Publication Date
GB554645A true GB554645A (en) 1943-07-13

Family

ID=9806260

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5983/42A Expired GB554645A (en) 1942-05-04 1942-05-04 Improvements relating to the manufacture of alternating electric current rectifiers

Country Status (1)

Country Link
GB (1) GB554645A (en)

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