JPS569391A - Plating method for black chromium - Google Patents
Plating method for black chromiumInfo
- Publication number
- JPS569391A JPS569391A JP8204979A JP8204979A JPS569391A JP S569391 A JPS569391 A JP S569391A JP 8204979 A JP8204979 A JP 8204979A JP 8204979 A JP8204979 A JP 8204979A JP S569391 A JPS569391 A JP S569391A
- Authority
- JP
- Japan
- Prior art keywords
- substance
- conductive material
- electrically conductive
- current density
- employing
- 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.)
- Granted
Links
Landscapes
- Electroplating And Plating Baths Therefor (AREA)
Abstract
PURPOSE: To obtain an even, good black chrome plated film with a low current density by applying the plating on the surface of the electrically conductive material employing a bath in which a trace amount of F- is present in the chromic anhydride containing solution, containing no sulfuric acid root in substance.
CONSTITUTION: Prepared is a plating bath in which F- is present at the concentration of 1×10-2W1×10-24g/l in the water solution containing chromic anhydride at a rate of 250W600g per 1l of water, but not sulfuric root in substance. For the F- source, for example, MgF2 is used. Then, employing the afore-mentioned plating bath at the temperature of -10W50°C, a good black Cr film is formed on the surface of electrically conductive material such as copper and iron at the current density of 5W200A/dm2 without irradiation of ionizating radiation.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8204979A JPS569391A (en) | 1979-06-30 | 1979-06-30 | Plating method for black chromium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8204979A JPS569391A (en) | 1979-06-30 | 1979-06-30 | Plating method for black chromium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS569391A true JPS569391A (en) | 1981-01-30 |
JPS645118B2 JPS645118B2 (en) | 1989-01-27 |
Family
ID=13763646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8204979A Granted JPS569391A (en) | 1979-06-30 | 1979-06-30 | Plating method for black chromium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS569391A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3517655A1 (en) * | 2018-01-25 | 2019-07-31 | Franz GmbH | Method for black chromium plating |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS496975A (en) * | 1972-03-13 | 1974-01-22 | ||
JPS5325690A (en) * | 1976-07-30 | 1978-03-09 | Matsushita Electric Works Ltd | Polymer having high dielectric constant |
-
1979
- 1979-06-30 JP JP8204979A patent/JPS569391A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS496975A (en) * | 1972-03-13 | 1974-01-22 | ||
JPS5325690A (en) * | 1976-07-30 | 1978-03-09 | Matsushita Electric Works Ltd | Polymer having high dielectric constant |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3517655A1 (en) * | 2018-01-25 | 2019-07-31 | Franz GmbH | Method for black chromium plating |
Also Published As
Publication number | Publication date |
---|---|
JPS645118B2 (en) | 1989-01-27 |
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