GB740045A - Improvements in the production of phosphate coatings on metal surfaces - Google Patents
Improvements in the production of phosphate coatings on metal surfacesInfo
- Publication number
- GB740045A GB740045A GB8631/54A GB863154A GB740045A GB 740045 A GB740045 A GB 740045A GB 8631/54 A GB8631/54 A GB 8631/54A GB 863154 A GB863154 A GB 863154A GB 740045 A GB740045 A GB 740045A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vibrations
- diaphragm
- phosphate
- solution
- production
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
In a process of forming a phosphate coating on a metal surface by immersion of the surface in an aqueous acidic phosphate solution, the solution is subjected to vibrations of ultrasonic frequency. The vibrations may be applied by fixing a vibrating device to the underside of the tank containing the solution, e.g. a diaphragm may be held in position across a hole in the bottom of the tank by a casing containing an electrically actuated vibrator covered in oil, the vibrations being transmitted through the oil to the diaphragm, or a quartz crystal subjected to an alternating voltage may be put in contact with the diaphragm. The use of manganese phosphate and zinc phosphate solutions vibrated at 400 kilocycles are described by way of example.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR740045X | 1953-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB740045A true GB740045A (en) | 1955-11-09 |
Family
ID=9133166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8631/54A Expired GB740045A (en) | 1953-03-24 | 1954-03-24 | Improvements in the production of phosphate coatings on metal surfaces |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB740045A (en) |
-
1954
- 1954-03-24 GB GB8631/54A patent/GB740045A/en not_active Expired
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