GB1368748A - Electrodeposition of chromium - Google Patents
Electrodeposition of chromiumInfo
- Publication number
- GB1368748A GB1368748A GB448471A GB448471A GB1368748A GB 1368748 A GB1368748 A GB 1368748A GB 448471 A GB448471 A GB 448471A GB 448471 A GB448471 A GB 448471A GB 1368748 A GB1368748 A GB 1368748A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- metal
- chromium
- feb
- electro
- 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
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/04—Electroplating: Baths therefor from solutions of chromium
- C25D3/06—Electroplating: Baths therefor from solutions of chromium from solutions of trivalent chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
1368748 Electro-depositing chromium metal or alloy BRITISH NON-FERROUS METAL RESEARCH ASSOCIATION 8 Feb 1972 [11 Feb 1971] 4484/71 Heading C7B Chromium is electro-deposited from a solution of trivalent chromium, ammonium and halide ions, e.g. added as CrCl 3 and NH 4 Cl, in a Ni-free homogeneous liquid mixture of water and a dipolar organic compound containing a highly electronegative oxygen atom (i.e. activated by an adjacent electron-donating atom or group) e.g. dimethylformamide, the proportion by volume of water to dipolar organic compound being greater than 60:40 but not greater than 95:5. Preferably the halide ion concentration is increased to more than 5 molar e.g. by adding CaCl 2 , AlCl 3 or NaCl. The solution may also contain boric acid and one or more brighteners, such as aliphatic or aromatic (substituted) aldehyde e.g. salicylaldehyde, or levellers, such as coumarin or aliphatic alcohol e.g. ethanol. A cationic surfactant may also be added as in Specification 1368749. The anode may be of graphite with the solution agitated in its vicinity by air or mechanical means. Another metal may be incorporated in the solution to obtain a bi-metal co-deposit or alloy. Specifications 1368747 and 1213556 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB448471A GB1368748A (en) | 1972-02-08 | 1972-02-08 | Electrodeposition of chromium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB448471A GB1368748A (en) | 1972-02-08 | 1972-02-08 | Electrodeposition of chromium |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1368748A true GB1368748A (en) | 1974-10-02 |
Family
ID=9778051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB448471A Expired GB1368748A (en) | 1972-02-08 | 1972-02-08 | Electrodeposition of chromium |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1368748A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103014792A (en) * | 2012-12-13 | 2013-04-03 | 合肥华清方兴表面技术有限公司 | Tin-cobalt alloy decorative chromium-substituted electroplate liquid and electroplate method thereof |
CN103014784A (en) * | 2012-12-13 | 2013-04-03 | 合肥华清方兴表面技术有限公司 | Constant-temperature environment-friendly trivalent chromium electroplating liquid and electroplating method thereof |
CN109652827A (en) * | 2019-01-16 | 2019-04-19 | 陈建平 | A kind of trivalent chromium sulfate plating solution and its manufacture craft and electroplating technology |
-
1972
- 1972-02-08 GB GB448471A patent/GB1368748A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103014792A (en) * | 2012-12-13 | 2013-04-03 | 合肥华清方兴表面技术有限公司 | Tin-cobalt alloy decorative chromium-substituted electroplate liquid and electroplate method thereof |
CN103014784A (en) * | 2012-12-13 | 2013-04-03 | 合肥华清方兴表面技术有限公司 | Constant-temperature environment-friendly trivalent chromium electroplating liquid and electroplating method thereof |
CN103014792B (en) * | 2012-12-13 | 2016-03-30 | 合肥华清方兴表面技术有限公司 | A kind of ornamental chromium replacement electroplating liquid of tin-cobalt alloy and electro-plating method thereof |
CN109652827A (en) * | 2019-01-16 | 2019-04-19 | 陈建平 | A kind of trivalent chromium sulfate plating solution and its manufacture craft and electroplating technology |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
426 | Order made revoking patent and granting patent of addition in lieu thereof (sect. 26(2)/1949) | ||
PCNP | Patent ceased through non-payment of renewal fee |