GB955775A - Process for the electroles coating of metals or metal articles - Google Patents
Process for the electroles coating of metals or metal articlesInfo
- Publication number
- GB955775A GB955775A GB29706/62A GB2970662A GB955775A GB 955775 A GB955775 A GB 955775A GB 29706/62 A GB29706/62 A GB 29706/62A GB 2970662 A GB2970662 A GB 2970662A GB 955775 A GB955775 A GB 955775A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- sodium
- coating
- magnesium
- solution
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/54—Contact plating, i.e. electroless electrochemical plating
-
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/60—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 using aqueous solutions using alkaline aqueous solutions with pH greater than 8
Abstract
In a process of electroless coating magnesium and/or iron, steel, copper or brass with tin, the metals are contacted with an aqueous solution containing an alkali metal pyrophosphate and a stannate and in the case of the metals other than magnesium they are also in continuous or intermittent contact with an anodic metal, such as magnesium, which is below sodium in the EMF series. The coating solution contains 37-60 g/l. of potassium or sodium stannate (K2SnO3.3H2O), 30-100 g/l. of tetra sodium pyrophosphate (Na4P2O7), 0-12.5 g/l. NaOH or KOH to give a pH value of 12-13.2 and 0-30 g/l. of potassium, sodium or ammonium acetate. The metal surfaces are first cleaned and may then be given an activated pickle in phosphoric acid-ammonium acid fluoride. With the acetate in the coating solution this activated pickle may be avoided. Coating is carried out by immersion, brushing or spraying with the solution at 80-85 DEG C., and in the case of the iron, steel, copper or brass the plating is carried out so that the metal is in contact with an anodic metal, e.g. a barrel plating process in which the barrel is lined with magnesium. The coated metal is then neutralized by immersion in an aqueous 5% ammonium acid fluoride solution or an aqueous 5% sodium bifluoride solution. U.S.A. Specification 2,901,409 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US129505A US3231396A (en) | 1961-08-07 | 1961-08-07 | Stannate immersion coating for magnesium, magnesium-dissimilar metal couples, and other metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB955775A true GB955775A (en) | 1964-04-22 |
Family
ID=22440304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29706/62A Expired GB955775A (en) | 1961-08-07 | 1962-08-02 | Process for the electroles coating of metals or metal articles |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3231396A (en) |
| BE (1) | BE621154A (en) |
| DE (1) | DE1237871B (en) |
| GB (1) | GB955775A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3496004A (en) * | 1965-07-02 | 1970-02-17 | Dollfus Mieg Et Cie | Methods of surface-treating hook members of metal slide fasteners and slide fasteners thus obtained |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3338725A (en) * | 1964-05-14 | 1967-08-29 | M & T Chemicals Inc | Novel plating process and composition |
| CN102560484B (en) * | 2010-12-30 | 2015-03-11 | 鸿富锦精密工业（深圳）有限公司 | Anti-corrosion processing method for magnesium alloy surface and magnesium products thereof |
| CN105483658B (en) * | 2014-09-19 | 2019-07-16 | 上海航天设备制造总厂 | Magnesium lithium alloy multilayer chemistry Nickel Plating Treatment method |
| CN113789508A (en) * | 2021-08-17 | 2021-12-14 | 北京科技大学 | Chemical conversion solution for magnesium alloy surface conductive corrosion-resistant treatment and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2085543A (en) * | 1935-05-21 | 1937-06-29 | Du Pont | Process for coating metals |
| US2822325A (en) * | 1955-02-11 | 1958-02-04 | Metal & Thermit Corp | Process of, and composition for cleaning and tinning |
| US2901409A (en) * | 1956-08-03 | 1959-08-25 | Dow Chemical Co | Anodizing magnesium |
| US2947639A (en) * | 1958-05-19 | 1960-08-02 | Chrysler Corp | Process and composition for immersion tin plating of aluminum and aluminum alloys |
-
0
- BE BE621154D patent/BE621154A/xx unknown
-
1961
- 1961-08-07 US US129505A patent/US3231396A/en not_active Expired - Lifetime
-
1962
- 1962-08-02 GB GB29706/62A patent/GB955775A/en not_active Expired
- 1962-08-07 DE DED39576A patent/DE1237871B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3496004A (en) * | 1965-07-02 | 1970-02-17 | Dollfus Mieg Et Cie | Methods of surface-treating hook members of metal slide fasteners and slide fasteners thus obtained |
Also Published As
| Publication number | Publication date |
|---|---|
| BE621154A (en) | |
| US3231396A (en) | 1966-01-25 |
| DE1237871B (en) | 1967-03-30 |
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