GB470624A - Improvements in and relating to methods of producing zinc coatings - Google Patents
Improvements in and relating to methods of producing zinc coatingsInfo
- Publication number
- GB470624A GB470624A GB6933/37A GB693337A GB470624A GB 470624 A GB470624 A GB 470624A GB 6933/37 A GB6933/37 A GB 6933/37A GB 693337 A GB693337 A GB 693337A GB 470624 A GB470624 A GB 470624A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- methods
- producing zinc
- zinc coatings
- anhydrous sodium
- 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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/04—Heavy metals
- C23F3/06—Heavy metals with acidic solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Electrodeposited coatings of zinc are rendered bright by dipping in a bath containing 10-60 oz. chromic acid, 0,05-5,0 oz. anhydrous sodium sulphate and 0,1-1,0 oz. nitric acid per gallon. A preferred bath contains 40 oz. chromic acid, 2 oz. anhydrous sodium sulphate and 0,7 oz. nitric acid per gallon.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US470624XA | 1936-03-10 | 1936-03-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB470624A true GB470624A (en) | 1937-08-18 |
Family
ID=21946867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6933/37A Expired GB470624A (en) | 1936-03-10 | 1937-03-09 | Improvements in and relating to methods of producing zinc coatings |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB470624A (en) |
-
1937
- 1937-03-09 GB GB6933/37A patent/GB470624A/en not_active Expired
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