GB1243830A - Method and apparatus for anodizing thin-films - Google Patents

Method and apparatus for anodizing thin-films

Info

Publication number
GB1243830A
GB1243830A GB51168/68A GB5116868A GB1243830A GB 1243830 A GB1243830 A GB 1243830A GB 51168/68 A GB51168/68 A GB 51168/68A GB 5116868 A GB5116868 A GB 5116868A GB 1243830 A GB1243830 A GB 1243830A
Authority
GB
United Kingdom
Prior art keywords
film
pad
resistors
electrolyte
value
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
GB51168/68A
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.)
Lignes Telegraphiques et Telephoniques LTT SA
Original Assignee
Lignes Telegraphiques et Telephoniques LTT SA
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 Lignes Telegraphiques et Telephoniques LTT SA filed Critical Lignes Telegraphiques et Telephoniques LTT SA
Publication of GB1243830A publication Critical patent/GB1243830A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/04Anodisation of aluminium or alloys based thereon
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/005Apparatus specially adapted for electrolytic conversion coating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)

Abstract

1,243,830. Electrolytically oxidizing resistors. LIGNES TELEGRAPHIQUES ET TELEPHONIQUES. 29 Oct., 1968 [10 Nov., 1967], No. 51168/68. Heading H1S. [Also in Division C7] A thin metallic film 1 e.g. a resistor has its resistance adjusted to a desired value by oxidation using a pad 3 filled with electrolyte which is brought into contact intermittently with film 1 when (alternating) current is passed through the film, the film surface being dried and the resistance value between fixed contacts on the film being measured during the intervals when the film and pad are apart. The pad 3 may be moved away from film 1 (or the film may be moved) during alternate half cycles by electromagnet 5, the anodizing current passing during the other half cycles. The electrolyte may be 0À1% aqueous orthophosphoric acid solution replenished by injection every 3 minutes under the control of an electromagnetic valve. The pad 3 may be of felt, plastic foam, chamois skin &c. Drying may be by hot air or the separating movement of the film from the pad may be arranged to remove electrolyte from the film surface. The final value of the resistor may be controlled by comparing the measured value with the required value stored in a memory to derive an error signal which controls or cuts off the anodizing current. A large number of resistors may be dealt with together, the values of these resistors being checked successively using a multi-switching device. The anodizing current may have a frequency of from 15 to 100 c/s.
GB51168/68A 1967-11-10 1968-10-29 Method and apparatus for anodizing thin-films Expired GB1243830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR127648 1967-11-10

Publications (1)

Publication Number Publication Date
GB1243830A true GB1243830A (en) 1971-08-25

Family

ID=8641505

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51168/68A Expired GB1243830A (en) 1967-11-10 1968-10-29 Method and apparatus for anodizing thin-films

Country Status (6)

Country Link
US (1) US3563862A (en)
BE (1) BE723227A (en)
DE (1) DE1808103B2 (en)
FR (1) FR1554760A (en)
GB (1) GB1243830A (en)
NL (1) NL6815523A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451018A1 (en) * 1979-03-03 1980-10-03 Dynamit Nobel Ag METHOD FOR INCREASING THE RESISTANCE OF PREDETERMINED GEOMETRIC PRIMING ELEMENTS

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1555334A (en) * 1975-06-13 1979-11-07 Imi Ltd Electrodeposition cell
DE2702207C2 (en) * 1977-01-20 1984-01-12 Robert Bosch Gmbh, 7000 Stuttgart Method and device for adjusting electronic circuits
DE4006363C1 (en) * 1990-03-01 1991-01-17 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451018A1 (en) * 1979-03-03 1980-10-03 Dynamit Nobel Ag METHOD FOR INCREASING THE RESISTANCE OF PREDETERMINED GEOMETRIC PRIMING ELEMENTS

Also Published As

Publication number Publication date
DE1808103A1 (en) 1969-09-25
NL6815523A (en) 1969-05-13
US3563862A (en) 1971-02-16
FR1554760A (en) 1969-01-24
BE723227A (en) 1969-04-01
DE1808103B2 (en) 1971-05-19

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