GB1243830A - Method and apparatus for anodizing thin-films - Google Patents
Method and apparatus for anodizing thin-filmsInfo
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/005—Apparatus 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.
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)
| 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)
| 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 |
-
1967
- 1967-11-10 FR FR127648A patent/FR1554760A/fr not_active Expired
-
1968
- 1968-10-29 GB GB51168/68A patent/GB1243830A/en not_active Expired
- 1968-10-31 BE BE723227D patent/BE723227A/xx unknown
- 1968-10-31 NL NL6815523A patent/NL6815523A/xx unknown
- 1968-11-04 US US773185A patent/US3563862A/en not_active Expired - Lifetime
- 1968-11-09 DE DE19681808103 patent/DE1808103B2/en active Pending
Cited By (1)
| 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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