GB1081932A - Electrodeposition of chromium - Google Patents
Electrodeposition of chromiumInfo
- Publication number
- GB1081932A GB1081932A GB34138/64A GB3413864A GB1081932A GB 1081932 A GB1081932 A GB 1081932A GB 34138/64 A GB34138/64 A GB 34138/64A GB 3413864 A GB3413864 A GB 3413864A GB 1081932 A GB1081932 A GB 1081932A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrolyte
- ions
- cro3
- chromium
- total
- 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
- 238000004070 electrodeposition Methods 0.000 title abstract 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 abstract 6
- 239000003792 electrolyte Substances 0.000 abstract 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 3
- 150000002500 ions Chemical class 0.000 abstract 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 abstract 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 2
- 229910052731 fluorine Inorganic materials 0.000 abstract 2
- 239000011737 fluorine Substances 0.000 abstract 2
- 229910052719 titanium Inorganic materials 0.000 abstract 2
- 239000010936 titanium Substances 0.000 abstract 2
- 229910052726 zirconium Inorganic materials 0.000 abstract 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 abstract 1
- GSKQIBITEDNGRM-UHFFFAOYSA-N [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O GSKQIBITEDNGRM-UHFFFAOYSA-N 0.000 abstract 1
- 239000000470 constituent Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000011669 selenium Substances 0.000 abstract 1
- 229910052711 selenium Inorganic materials 0.000 abstract 1
- 229940065287 selenium compound Drugs 0.000 abstract 1
- 150000003343 selenium compounds Chemical class 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 1
- -1 sulphate ions Chemical class 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
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)
- Electroplating Methods And Accessories (AREA)
Abstract
In a process for the electro-deposition of chromium from a sodium tetrachromate electrolyte containing tetrachromate ions as the predominant chromium-containing constituent and having a CrO3; Na2O molar ratio of 3.5 - 8.0: 1 and a temperature of 18-40 DEG C., the electrolyte also includes in amounts calculated on the total CrO3 content 0.05-0.80% sulphate ions, and fluoride and titanate and/or zirconate ions or complex ions containing fluorine and titanium or zirconium in amounts providing 0.03-2.5% fluorine and a total of 0.1-2.0% titanium and zirconium. The electrolyte may contain 150-600 grams total CrO3 per litre, and may also contain 0.005-0.015 gm selenium in the form of a soluble selenium compound. According to ion-content and temperature of electrolyte, the resulting deposit may be bright or micro-cracked. The current density used may lie in the range 36-460 amps/sq.ft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER0035983 | 1963-08-26 | ||
| CH35564A CH441919A (en) | 1963-08-26 | 1964-06-23 | Chrome plating process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1081932A true GB1081932A (en) | 1967-09-06 |
Family
ID=25684322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34138/64A Expired GB1081932A (en) | 1963-08-26 | 1964-08-20 | Electrodeposition of chromium |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3418220A (en) |
| CH (1) | CH441919A (en) |
| DE (1) | DE1496967A1 (en) |
| FR (1) | FR1400157A (en) |
| GB (1) | GB1081932A (en) |
| NL (1) | NL6409261A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1496978B2 (en) * | 1966-01-18 | 1970-11-12 | Roggendorf, Wilhelm, 7640 Kehl | Galvanic chrome bath |
| US3514380A (en) * | 1967-02-17 | 1970-05-26 | Kewanee Oil Co | Chromium plating from a fluosilicate type bath containing sodium,ammonium and/or magnesium ions |
| GB1289117A (en) * | 1969-10-10 | 1972-09-13 | ||
| US4039399A (en) * | 1971-03-11 | 1977-08-02 | Dana Corporation | Method of making a bearing surface |
| US3770286A (en) * | 1971-03-11 | 1973-11-06 | Dana Corp | Piston ring |
| AU4610272A (en) * | 1971-09-07 | 1974-03-07 | M & T Chemicals Inc | Wearing surface |
| WO2008003011A2 (en) * | 2006-06-27 | 2008-01-03 | Enduro Industries, Inc. | Improved direct current chrome plating process and variant layered chrome product |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA654782A (en) * | 1962-12-25 | Mahlstedt Henry | Process for chromium plating | |
| FR754299A (en) * | 1932-07-29 | 1933-11-02 | ||
| US2686756A (en) * | 1953-05-20 | 1954-08-17 | United Chromium Inc | Chromium plating |
| US2800443A (en) * | 1955-07-26 | 1957-07-23 | Metal & Thermit Corp | Method of chromium plating |
| GB798590A (en) * | 1955-09-14 | 1958-07-23 | British Non Ferrous Metals Res | Improvements in or relating to chromium plating |
| DE1106575B (en) * | 1958-09-01 | 1961-05-10 | Wilhelm Roggendorf | Bath for the galvanic deposition of high-gloss chrome coatings from cold-working tetrachromate tubes |
| US2962428A (en) * | 1959-01-15 | 1960-11-29 | Metal & Thermit Corp | Process for chromium plating |
| US2952590A (en) * | 1959-08-14 | 1960-09-13 | Metal & Thermit Corp | Process for chromium plating |
| US3157585A (en) * | 1959-12-18 | 1964-11-17 | Gen Motors Corp | Chromium plating |
-
0
- DE DENDAT1496967 patent/DE1496967A1/de active Pending
-
1964
- 1964-06-23 CH CH35564A patent/CH441919A/en unknown
- 1964-07-02 FR FR8113A patent/FR1400157A/en not_active Expired
- 1964-08-12 NL NL6409261A patent/NL6409261A/xx unknown
- 1964-08-18 US US390463A patent/US3418220A/en not_active Expired - Lifetime
- 1964-08-20 GB GB34138/64A patent/GB1081932A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL6409261A (en) | 1965-03-01 |
| CH441919A (en) | 1967-08-15 |
| FR1400157A (en) | 1965-05-21 |
| US3418220A (en) | 1968-12-24 |
| DE1496967A1 (en) |
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