SE8405681D0 - PROCEDURES ACROSS HEART CHROME SEPARATION ON ANY METAL ALLOYING UNDER WESRIGEN, CHROMESEURE AND SUSPENSION ACTIONS CONTAINING ELECTROLYTES - Google Patents
PROCEDURES ACROSS HEART CHROME SEPARATION ON ANY METAL ALLOYING UNDER WESRIGEN, CHROMESEURE AND SUSPENSION ACTIONS CONTAINING ELECTROLYTESInfo
- Publication number
- SE8405681D0 SE8405681D0 SE8405681A SE8405681A SE8405681D0 SE 8405681 D0 SE8405681 D0 SE 8405681D0 SE 8405681 A SE8405681 A SE 8405681A SE 8405681 A SE8405681 A SE 8405681A SE 8405681 D0 SE8405681 D0 SE 8405681D0
- Authority
- SE
- Sweden
- Prior art keywords
- wesrigen
- chromeseure
- chrome
- heart
- procedures
- Prior art date
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
- C25D3/10—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)
- Electroplating Methods And Accessories (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
For the purpose of increasing the current efficiency in a process for the deposition of hard chromium on workpieces of a metal alloy from an aqueous electrolyte containing chromic acid and sulphuric acid, a saturated aliphatic sulphonic acid with a maximum of two carbon atoms and a maximum of six sulphonic acid groups or their salts or halogen derivatives is added and operation is with a concentration of more than 0.5 g/l of the organic substance, with a bath temperature of 20 DEG to 70 DEG C and with a current density of 15 to 100 A/dm<2>. A working cathodic current efficiency of over 20% is achieved.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843402554 DE3402554A1 (en) | 1984-01-26 | 1984-01-26 | DEPOSITION OF HARD CHROME ON A METAL ALLOY FROM AN AQUEOUS ELECTROLYTE CONTAINING CHROME ACID AND SULFURIC ACID |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8405681D0 true SE8405681D0 (en) | 1984-11-13 |
SE8405681L SE8405681L (en) | 1985-07-27 |
SE461663B SE461663B (en) | 1990-03-12 |
Family
ID=6225909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8405681A SE461663B (en) | 1984-01-26 | 1984-11-13 | PROCEDURES FOR EXPOSURE OF HEAVY CHROMES ON STEEL OR AN ALUMINUM ALLOY OF Aqueous, CR0 AND SULFUR ACID CONTAINING ELECTROLYT |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE3402554A1 (en) |
FR (1) | FR2558852B1 (en) |
GB (1) | GB2153387B (en) |
HK (1) | HK102588A (en) |
SE (1) | SE461663B (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4588481A (en) * | 1985-03-26 | 1986-05-13 | M&T Chemicals Inc. | Chromium plating bath for producing non-iridescent, adherent, bright chromium deposits at high efficiencies and substantially free of cathodic low current density etching |
DE3933896C1 (en) * | 1989-10-11 | 1990-10-11 | Lpw-Chemie Gmbh, 4040 Neuss, De | |
AU638512B2 (en) * | 1989-11-06 | 1993-07-01 | Atotech Deutschland Gmbh | Protection of lead-containing anodes during chromium electroplating |
DE4011201C1 (en) * | 1990-04-06 | 1991-08-22 | Lpw-Chemie Gmbh, 4040 Neuss, De | Coating workpiece with chromium for improved corrosion resistance - comprises using aq. electrolyte soln. contg. chromic acid sulphate ions, and fluoro:complexes to increase deposition |
US5196108A (en) * | 1991-04-24 | 1993-03-23 | Scot Industries, Inc. | Sucker rod oil well pump |
DE4432512C2 (en) * | 1994-09-13 | 1998-12-17 | Lpw Chemie Gmbh | Use of a process for the electrolytic deposition of chrome layers |
US5735136A (en) * | 1995-09-11 | 1998-04-07 | Howe Corporation | Flake freezing machine and system using same |
DE19828545C1 (en) * | 1998-06-26 | 1999-08-12 | Cromotec Oberflaechentechnik G | Galvanic bath for forming a hard chromium layer on machine parts |
DE19913273C2 (en) * | 1999-03-24 | 2003-07-24 | Lpw Chemie Gmbh | Process for producing pearl chrome layers on workpieces made of metal, in particular steel |
DE10255853A1 (en) | 2002-11-29 | 2004-06-17 | Federal-Mogul Burscheid Gmbh | Manufacture of structured hard chrome layers |
DE102004019370B3 (en) * | 2004-04-21 | 2005-09-01 | Federal-Mogul Burscheid Gmbh | Production of optionally coated structurized hard chrome layer, used e.g. for decoration, protection or functional coating on printing roller or stamping, embossing or deep drawing tool uses aliphatic sulfonic acid in acid plating bath |
JP4650157B2 (en) | 2005-01-12 | 2011-03-16 | マツダ株式会社 | Plating film for sliding part and method for forming the same |
DE102008017270B3 (en) * | 2008-04-04 | 2009-06-04 | Federal-Mogul Burscheid Gmbh | Structured chromium solid particle layer and method for its production and coated machine element |
EP2792770B1 (en) | 2013-04-17 | 2015-06-24 | ATOTECH Deutschland GmbH | Functional chromium layer with improved corrosion resistance |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2949040A (en) * | 1954-06-30 | 1960-08-16 | Rockwell Standard Co | Vehicle drive mechanism |
DE1034545B (en) * | 1955-05-16 | 1958-07-17 | Leon Stock | Loading and unloading device, in particular for loading and unloading of fertilizer or the like. |
DE1034945B (en) * | 1956-05-15 | 1958-07-24 | Riedel & Co | Smoothing agent and bath for electrolytic chrome plating from an aqueous hexavalent chromic acid solution |
US3745097A (en) * | 1969-05-26 | 1973-07-10 | M & T Chemicals Inc | Electrodeposition of an iridescent chromium coating |
US3758390A (en) * | 1971-06-18 | 1973-09-11 | M & T Chemicals Inc | Novel cromium plating compositions |
US4450052A (en) * | 1982-07-28 | 1984-05-22 | M&T Chemicals Inc. | Zinc and nickel tolerant trivalent chromium plating baths |
-
1984
- 1984-01-26 DE DE19843402554 patent/DE3402554A1/en active Granted
- 1984-11-13 SE SE8405681A patent/SE461663B/en not_active IP Right Cessation
- 1984-12-03 FR FR8418402A patent/FR2558852B1/en not_active Expired - Lifetime
- 1984-12-20 GB GB08432194A patent/GB2153387B/en not_active Expired
-
1988
- 1988-12-15 HK HK102588A patent/HK102588A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2558852B1 (en) | 1990-02-02 |
FR2558852A1 (en) | 1985-08-02 |
GB2153387A (en) | 1985-08-21 |
DE3402554A1 (en) | 1985-08-08 |
GB2153387B (en) | 1988-01-20 |
GB8432194D0 (en) | 1985-01-30 |
HK102588A (en) | 1988-12-23 |
SE461663B (en) | 1990-03-12 |
SE8405681L (en) | 1985-07-27 |
DE3402554C2 (en) | 1987-09-10 |
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