GB853919A - Method for controlling the thickness and crystalline grain structure of phosphate coatings formed upon metallic surfaces - Google Patents
Method for controlling the thickness and crystalline grain structure of phosphate coatings formed upon metallic surfacesInfo
- Publication number
- GB853919A GB853919A GB670359A GB670359A GB853919A GB 853919 A GB853919 A GB 853919A GB 670359 A GB670359 A GB 670359A GB 670359 A GB670359 A GB 670359A GB 853919 A GB853919 A GB 853919A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chlorate
- solution
- unaccelerated
- concentration
- coating
- 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
- C23C22/77—Controlling or regulating of the coating 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
The thickness of coatings formed on metallic surfaces by chlorate-accelerated heavy-metal phosphate coating solutions under constant conditions of time and temperature is controlled by varying the concentration of chlorate present in the otherwise constant solution in inverse logarithmic proportion to the thickness of coating desired. The grain size of the coating is simultaneously controlled since the coarseness thereof similarly varies as an invere logarithmic function of the chlorate concentration. Where the coatings are formed by dipping, the chlorate concentration may be varied by injecting additional amounts of the chlorate or of the unaccelerated ingredients into the bath. Where the coatings are formed by spraying, the chlorate concentration may be varied by (a) injecting the required amount thereof into the pipeline feeding unaccelerated solution to the spray nozzles, (b) using separate spray nozzles for a solution of the accelerator and for the unaccelerated solution, or (c) using separate spray nozzles for the unaccelerated solution and for the same solution containing the maximum desired chlorate concentration. The example relates to the coating of steel panels using a sodium chlorate accelerated zinc phosphate solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB670359A GB853919A (en) | 1959-02-26 | 1959-02-26 | Method for controlling the thickness and crystalline grain structure of phosphate coatings formed upon metallic surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB670359A GB853919A (en) | 1959-02-26 | 1959-02-26 | Method for controlling the thickness and crystalline grain structure of phosphate coatings formed upon metallic surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB853919A true GB853919A (en) | 1960-11-09 |
Family
ID=9819242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB670359A Expired GB853919A (en) | 1959-02-26 | 1959-02-26 | Method for controlling the thickness and crystalline grain structure of phosphate coatings formed upon metallic surfaces |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB853919A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426600A (en) * | 2021-07-09 | 2021-09-24 | 飞荣达科技(江苏)有限公司 | Method for controlling flux coating amount of brazing liquid cold plate |
-
1959
- 1959-02-26 GB GB670359A patent/GB853919A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426600A (en) * | 2021-07-09 | 2021-09-24 | 飞荣达科技(江苏)有限公司 | Method for controlling flux coating amount of brazing liquid cold plate |
| CN113426600B (en) * | 2021-07-09 | 2024-03-19 | 飞荣达科技(江苏)有限公司 | Control method for brazing flux coating amount of brazing liquid cooling plate |
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