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GB794748A - Wave-guides - Google Patents

Wave-guides

Info

Publication number
GB794748A
GB794748A GB2392455A GB2392455A GB794748A GB 794748 A GB794748 A GB 794748A GB 2392455 A GB2392455 A GB 2392455A GB 2392455 A GB2392455 A GB 2392455A GB 794748 A GB794748 A GB 794748A
Authority
GB
United Kingdom
Prior art keywords
per cent
waveguide
aluminium
guides
wave
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
GB2392455A
Inventor
Harold Everard Monteagl Barlow
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB2392455A priority Critical patent/GB794748A/en
Publication of GB794748A publication Critical patent/GB794748A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F3/00—Brightening metals by chemical means
    • C23F3/02—Light metals
    • C23F3/03—Light metals with acidic solutions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
    • H01P11/001—Manufacturing waveguides or transmission lines of the waveguide type
    • H01P11/002—Manufacturing hollow waveguides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

To improve surface conductivity, a waveguide is subjected to a chemical-dip brightening process. A suitable process for aluminium or aluminium-alloy waveguides utilizes the following solution: ..by volume .Phosphoric acid (s.g. 1.75).78 per cent .Nitric acid (s.g. 1.42).11 per cent .Sulphuric acid (s.g. 1.84).11 per cent to each litre of which is added 0.86 grms. of ferrous sulphate (FeSO4.7H2O). The waveguide is immersed in this solution at a temperature of 95 DEG -100 DEG C. for 15-60 seconds
GB2392455A 1955-08-19 1955-08-19 Wave-guides Expired GB794748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2392455A GB794748A (en) 1955-08-19 1955-08-19 Wave-guides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2392455A GB794748A (en) 1955-08-19 1955-08-19 Wave-guides

Publications (1)

Publication Number Publication Date
GB794748A true GB794748A (en) 1958-05-07

Family

ID=10203517

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2392455A Expired GB794748A (en) 1955-08-19 1955-08-19 Wave-guides

Country Status (1)

Country Link
GB (1) GB794748A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024189515A1 (en) * 2023-03-13 2024-09-19 Swissto12 Sa Method for adapting the frequency response of a radiofrequency device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024189515A1 (en) * 2023-03-13 2024-09-19 Swissto12 Sa Method for adapting the frequency response of a radiofrequency device

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