GB301478A - Process for the electrolytic deposition of chromium - Google Patents
Process for the electrolytic deposition of chromiumInfo
- Publication number
- GB301478A GB301478A GB23/28A GB2328A GB301478A GB 301478 A GB301478 A GB 301478A GB 23/28 A GB23/28 A GB 23/28A GB 2328 A GB2328 A GB 2328A GB 301478 A GB301478 A GB 301478A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gms
- chromium
- solution
- boiled
- filtered
- 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
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical group [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title abstract 3
- 229910052804 chromium Inorganic materials 0.000 title abstract 3
- 239000011651 chromium Substances 0.000 title abstract 3
- 230000008021 deposition Effects 0.000 title 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract 4
- 239000004327 boric acid Substances 0.000 abstract 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical class OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 abstract 3
- XHFVDZNDZCNTLT-UHFFFAOYSA-H chromium(3+);tricarbonate Chemical compound [Cr+3].[Cr+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O XHFVDZNDZCNTLT-UHFFFAOYSA-H 0.000 abstract 3
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 abstract 3
- 235000011006 sodium potassium tartrate Nutrition 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical class OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 abstract 2
- 239000003792 electrolyte Substances 0.000 abstract 2
- 230000007935 neutral effect Effects 0.000 abstract 2
- 150000003839 salts Chemical class 0.000 abstract 2
- 239000001632 sodium acetate Substances 0.000 abstract 2
- 235000017281 sodium acetate Nutrition 0.000 abstract 2
- IULJSGIJJZZUMF-UHFFFAOYSA-N 2-hydroxybenzenesulfonic acid Chemical class OC1=CC=CC=C1S(O)(=O)=O IULJSGIJJZZUMF-UHFFFAOYSA-N 0.000 abstract 1
- FQHYQCXMFZHLAE-UHFFFAOYSA-N 25405-85-0 Chemical compound CC1(C)C2(OC(=O)C=3C=CC=CC=3)C1C1C=C(CO)CC(C(C(C)=C3)=O)(O)C3C1(O)C(C)C2OC(=O)C1=CC=CC=C1 FQHYQCXMFZHLAE-UHFFFAOYSA-N 0.000 abstract 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical class CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 abstract 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 abstract 1
- 150000001447 alkali salts Chemical class 0.000 abstract 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 150000001649 bromium compounds Chemical class 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 150000001845 chromium compounds Chemical class 0.000 abstract 1
- 229910000423 chromium oxide Inorganic materials 0.000 abstract 1
- GRWVQDDAKZFPFI-UHFFFAOYSA-H chromium(III) sulfate Chemical compound [Cr+3].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRWVQDDAKZFPFI-UHFFFAOYSA-H 0.000 abstract 1
- 239000000084 colloidal system Substances 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 235000019441 ethanol Nutrition 0.000 abstract 1
- 235000011187 glycerol Nutrition 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 abstract 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- 235000006408 oxalic acid Nutrition 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 abstract 1
- 239000001509 sodium citrate Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 235000000346 sugar Nutrition 0.000 abstract 1
- 235000002906 tartaric acid Nutrition 0.000 abstract 1
- 239000011975 tartaric acid Substances 0.000 abstract 1
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
- C25D3/10—Electroplating: Baths therefor from solutions of chromium characterised by the organic bath constituents used
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
301,478. Langbein-Pfanhauser-Werke Akt.-Ges. Dec. 1, 1927, [Convention date]. Chromium, depositing. - The electrolyte consists of a solution of a tri-valent chromium compound which is maintained as neutral as possible, chromium oxide or basic salts being retained in solution by addition agents such as Rochelle salt, sodium citrate or salts of oxalic acid or phenol sulphonic acid or alcohol, glycerine or sugar. The hydrogen ion concentration pH should be maintained between 4 and 6; the current efficiency is higher at the upper limit. Weak boric acid mav be added as a buffer. Bivalent bromium compounds may be present. If bright deposits are desired colloids or substances having a capillary action such as hydroxyl derivatives of aromatic hydrocarbons or derivatives thereof are added. A current density between 0.25 amps. and 2 or 3 amps. per sq. dcm. and a temperature of 20-60‹ C. may be employed. Oxidation of the bath should be prevented when no diaphragm is employed, by using chromium anodes and, if necessary, adding a reducing agent such as a bisulphite or a chromous salt. A graphite, carbon or other insoluble anode may be used with a diaphragm, a solution of Rochelle sale being used as anolyte, preferably at a lower concentration than the catholyte. The electrolyte or the catholyte is preferably stirred and also circulated and filtered during use. The catholyte is preferably saturated with carbon dioxide by suspending chromium carbonate in linen bags in the cathode chamber. Suitable baths may be prepared as follows (1) 150 gms. chromic acetate are dissolved in 1 litre of water and excess acetic acid driven off by boiling. 50 gms. Rochelle salt and 20 gms. boric acid are then added and the solution again boiled and filtered. (2) 200 gms. chromium carbonate are mixed in 1 litre of water with tartaric acid and boiled till the solution contains neutral chromium carbonate. 50 gms. sodium acetate and 25 gms. boric acid are then added and the solution boiled and filtered. (3) 250 gms. chromium sulphate, 50 gms. Rochelle salt, 50 gms. sodium acetate and 10 gms. boric acid are boiled in 1 litre of water and filtered. Articles of complicated shape may be plated without the use of auxiliary anodes. Small articles may be plated in mass.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE301478X | 1927-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB301478A true GB301478A (en) | 1929-02-21 |
Family
ID=6100282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23/28A Expired GB301478A (en) | 1927-12-01 | 1928-01-02 | Process for the electrolytic deposition of chromium |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB301478A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4374007A (en) * | 1980-03-10 | 1983-02-15 | International Business Machines Corporation | Trivalent chromium electroplating solution and process |
| EP0100133A1 (en) * | 1982-07-28 | 1984-02-08 | M & T Chemicals, Inc. | Zinc and nickel tolerant trivalent chromium plating baths and plating process |
| US4612091A (en) * | 1982-06-30 | 1986-09-16 | Asociation Pour La Recherche Et Le Developpement Des Methodes Et Processus Industriels | Chromium electroplating trivalent chrominum bath therefore and method of making such bath |
-
1928
- 1928-01-02 GB GB23/28A patent/GB301478A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4374007A (en) * | 1980-03-10 | 1983-02-15 | International Business Machines Corporation | Trivalent chromium electroplating solution and process |
| US4612091A (en) * | 1982-06-30 | 1986-09-16 | Asociation Pour La Recherche Et Le Developpement Des Methodes Et Processus Industriels | Chromium electroplating trivalent chrominum bath therefore and method of making such bath |
| EP0100133A1 (en) * | 1982-07-28 | 1984-02-08 | M & T Chemicals, Inc. | Zinc and nickel tolerant trivalent chromium plating baths and plating process |
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