GB758481A - Process for the surface treatment of objects of aluminium or aluminium alloys - Google Patents
Process for the surface treatment of objects of aluminium or aluminium alloysInfo
- Publication number
- GB758481A GB758481A GB519454A GB519454A GB758481A GB 758481 A GB758481 A GB 758481A GB 519454 A GB519454 A GB 519454A GB 519454 A GB519454 A GB 519454A GB 758481 A GB758481 A GB 758481A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- mols
- solution
- per litre
- alloys
- 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
- C23F3/02—Light metals
- C23F3/03—Light 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)
- ing And Chemical Polishing (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
Surfaces of aluminium and alloys thereof, particularly those containing one or more of Mn, Mg, Si, Cu and Zn, are chemically polished by treatment at temperatures above atmospheric, preferably at 60 DEG -120 DEG C., in a bath containing per litre of solution, 10-16 gm. mols. of phosphoric acid, 4-9 gm. mols. of nitric acid and 0,01-0,25 gm. mols. of citric acid. After chemical polishing, the surfaces may be oxidised anodically or chemically e.g. by the action of a solution of 0,16 gms. per litre of sodium silicate and 60 gms. per litre of a mixture of 5 parts of sodium carbonate and 1,5 parts of sodium chromate, followed by boiling in a 2 per cent water glass solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB519454A GB758481A (en) | 1954-02-22 | 1954-02-22 | Process for the surface treatment of objects of aluminium or aluminium alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB519454A GB758481A (en) | 1954-02-22 | 1954-02-22 | Process for the surface treatment of objects of aluminium or aluminium alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB758481A true GB758481A (en) | 1956-10-03 |
Family
ID=9791479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB519454A Expired GB758481A (en) | 1954-02-22 | 1954-02-22 | Process for the surface treatment of objects of aluminium or aluminium alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB758481A (en) |
-
1954
- 1954-02-22 GB GB519454A patent/GB758481A/en not_active Expired
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