ES2000386A6 - Process for forming adherent chromium electrodeposits from a high energy efficient bath. - Google Patents
Process for forming adherent chromium electrodeposits from a high energy efficient bath.Info
- Publication number
- ES2000386A6 ES2000386A6 ES8600893A ES8600893A ES2000386A6 ES 2000386 A6 ES2000386 A6 ES 2000386A6 ES 8600893 A ES8600893 A ES 8600893A ES 8600893 A ES8600893 A ES 8600893A ES 2000386 A6 ES2000386 A6 ES 2000386A6
- Authority
- ES
- Spain
- Prior art keywords
- activating
- solution
- high energy
- energy efficient
- mixture
- 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 compound [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
- 238000000034 method Methods 0.000 title abstract 3
- 230000001464 adherent effect Effects 0.000 title 1
- 239000002659 electrodeposit Substances 0.000 title 1
- 230000003213 activating effect Effects 0.000 abstract 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000000758 substrate Substances 0.000 abstract 2
- 229910001018 Cast iron Inorganic materials 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000005530 etching Methods 0.000 abstract 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 238000007747 plating Methods 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 239000010935 stainless steel 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
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
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
The use of high efficiency chromium plating processes has been hampered by the inability to obtain adequate coating adhesion. The invention relates to a method of electrodepositing chromium on a metal substrate such as ferrous metal, stainless steel or cast iron which includes the step of activating the substrate by electrolytically etching in an activating solution. The activating solution is selected from a) a substantially neutral solution, b) a mixture of sulfuric acid, added sulfate ion and an inorganic oxidizing agent c) a mixture of chromic acid and chloride ion or d) an anodic oxidizing polarizing solution. It has been found that the use of such activating solutions overcomes the previously encountered adhesion problems.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/764,273 US4585530A (en) | 1985-08-09 | 1985-08-09 | Process for forming adherent chromium electrodeposits from high energy efficient bath on ferrous metal substrates |
| US06/780,469 US4668348A (en) | 1985-09-26 | 1985-09-26 | Method for forming adherent, bright, smooth and hard chromium electrodeposits on ferrous metal substrates from high energy efficient chromium baths |
| US06/787,403 US4664759A (en) | 1985-10-15 | 1985-10-15 | Method for forming adherent, bright, smooth and hard chromium electrodeposits on stainless steel substrates from high energy efficient chromium baths |
| US06/816,180 US4717456A (en) | 1986-01-06 | 1986-01-06 | Two-step electrolytic activation process for chromium electrodeposition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2000386A6 true ES2000386A6 (en) | 1988-02-16 |
Family
ID=27505697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES8600893A Expired ES2000386A6 (en) | 1985-08-09 | 1986-08-06 | Process for forming adherent chromium electrodeposits from a high energy efficient bath. |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0235173A1 (en) |
| AU (1) | AU6127486A (en) |
| BR (1) | BR8606816A (en) |
| DK (1) | DK166887D0 (en) |
| ES (1) | ES2000386A6 (en) |
| GR (1) | GR862069B (en) |
| IL (1) | IL79641A0 (en) |
| PT (1) | PT83165B (en) |
| WO (1) | WO1987000869A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5041138A (en) * | 1986-11-20 | 1991-08-20 | Massachusetts Institute Of Technology | Neomorphogenesis of cartilage in vivo from cell culture |
| US5741685A (en) * | 1995-06-07 | 1998-04-21 | Children's Medical Center Corporation | Parenchymal cells packaged in immunoprotective tissue for implantation |
| RU2155245C1 (en) * | 1999-08-19 | 2000-08-27 | Степченко Валерий Владимирович | Method for finishing treatment of metallic surface before electroplating (versions) |
| US8763173B2 (en) * | 2008-09-26 | 2014-07-01 | Kohler Co. | Stainless steel plumbing fixtures with resistant coatings |
| US20200032412A1 (en) * | 2018-07-25 | 2020-01-30 | The Boeing Company | Compositions and Methods for Activating Titanium Substrates |
| CN113737239A (en) * | 2021-08-30 | 2021-12-03 | 凯瑞电子(诸城)有限公司 | Liquid formula for preventing pressure sensor metal shell from being oxidized and treatment process |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2915444A (en) * | 1955-12-09 | 1959-12-01 | Enthone | Process for cleaning and plating ferrous metals |
| US3694326A (en) * | 1969-11-03 | 1972-09-26 | Allegheny Ludlum Steel | Pretreatment of stainless steel for electroplating |
| BE786737A (en) * | 1971-07-27 | 1973-01-26 | Bayer Rickmann Gmbh | PRE-TREATMENT PROCESS OF STEEL SHEETS FOR ONE-LAYER ENAMELING AFTER FORMING |
| US3726773A (en) * | 1971-08-02 | 1973-04-10 | Us Army | Surface preparation of maraging steel for electroplating |
| DE2500730C3 (en) * | 1975-01-10 | 1980-04-24 | Bergische Metallwarenfabrik Dillenberg & Co Kg, 5601 Gruiten | Galvanic chrome bath |
| IT1047584B (en) * | 1975-09-26 | 1980-10-20 | Centro Speriment Metallurg | METHOD FOR IMPROVING THE SUSCETTI BILITA OF STEEL TO COATINGS |
| DE2908846A1 (en) * | 1978-03-08 | 1979-09-13 | Yissum Res Dev Co | GALVANIC CHROME BATH |
| US4412892A (en) * | 1981-07-13 | 1983-11-01 | The United States Of America As Represented By The Secretary Of The Army | Pretreatment of superalloys and stainless steels for electroplating |
| JPS6057519B2 (en) * | 1981-08-20 | 1985-12-16 | 住友金属工業株式会社 | Oil country tubular joint with excellent seizure resistance and its manufacturing method |
| US4472249A (en) * | 1981-08-24 | 1984-09-18 | M&T Chemicals Inc. | Bright chromium plating baths and process |
| DE3278369D1 (en) * | 1982-02-09 | 1988-05-26 | Ibm | Electrodeposition of chromium and its alloys |
| US4450050A (en) * | 1983-02-03 | 1984-05-22 | M&T Chemicals Inc. | Process for bonding high efficiency chromium electrodeposits |
-
1986
- 1986-06-24 EP EP86904565A patent/EP0235173A1/en not_active Withdrawn
- 1986-06-24 WO PCT/US1986/001351 patent/WO1987000869A1/en not_active Ceased
- 1986-06-24 AU AU61274/86A patent/AU6127486A/en not_active Abandoned
- 1986-06-24 BR BR8606816A patent/BR8606816A/en unknown
- 1986-08-05 GR GR862069A patent/GR862069B/en unknown
- 1986-08-06 IL IL79641A patent/IL79641A0/en unknown
- 1986-08-06 ES ES8600893A patent/ES2000386A6/en not_active Expired
- 1986-08-07 PT PT83165A patent/PT83165B/en unknown
-
1987
- 1987-04-01 DK DK166887A patent/DK166887D0/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| PT83165A (en) | 1986-09-01 |
| DK166887A (en) | 1987-04-01 |
| GR862069B (en) | 1986-12-24 |
| WO1987000869A1 (en) | 1987-02-12 |
| AU6127486A (en) | 1987-03-05 |
| IL79641A0 (en) | 1986-11-30 |
| EP0235173A4 (en) | 1987-07-13 |
| DK166887D0 (en) | 1987-04-01 |
| BR8606816A (en) | 1987-10-13 |
| PT83165B (en) | 1988-01-04 |
| EP0235173A1 (en) | 1987-09-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 20000202 |