GB599784A - Improvements in or relating to processes for the production of protective coatings on metal surfaces - Google Patents
Improvements in or relating to processes for the production of protective coatings on metal surfacesInfo
- Publication number
- GB599784A GB599784A GB14440/46A GB1444046A GB599784A GB 599784 A GB599784 A GB 599784A GB 14440/46 A GB14440/46 A GB 14440/46A GB 1444046 A GB1444046 A GB 1444046A GB 599784 A GB599784 A GB 599784A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- complex
- phosphates
- anion
- aluminium
- 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
- C23C22/05—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
- C23C22/06—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 aqueous acidic solutions with pH less than 6
- C23C22/07—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 aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Chemically Coating (AREA)
Abstract
In a process and solution for producing a protective coating on metal surfaces, e.g., iron, steel, zinc, aluminium and its alloys, the surface is treated with an aqueous solution containing the acid radical of phosphoric acid and having dissolved therein a minor proportion, i.e., an amount up to their maximum solubility in the bath, of one or more complex anhydrous ammonium metallo phosphates and/or solid solutions of one such complex phosphate in another such complex phosphate. The complex phosphate may be that of a divalent metal (zinc, cobalt, magnesium, cadmium) in which case all the metal is in the anion, the structural formula being given as:- <FORM:0599784/III/1> Where M is the divalent metal; or may be that of a trivalent + metal, e.g., aluminium, chromium, for which no structure is said to be known but in which the metal is not all in the anion. These phosphates are normally added to the phosphating bath-the baths described in Specifications 419487 and 447,176, [both in Group II], being preferred-in solution in phosphoric acid. Specification 599,728 also is referred to.ALSO:In a process and solution for producing a protective coating on metal surfaces, e.g. iron, steel, zinc, aluminium and its alloys, the surface is treated with an aqueous solution containing the acid radical of phosphoric acid and having dissolved therein a minor proportion, i.e. an amount up to their maximum solubility in the bath, of one or more complex anhydrous ammonium metallo phosphates and/or solid solutions of one such complex phosphate in another such complex phosphate. The complex phosphate may be that of a divalent metal (zinc, cobalt, magnesium, cadmium) in which case all the metal is in the anion, the structural formula being given as <FORM:0599784/II/1> where M is the divalent metal; or may be that of a trivalent metal, e.g. aluminium, chromium, for which no structure is said to be known but in which the metal is not all in the anion. These phosphates are usually added to the phosphating bath-the baths described in Specifications 419,487 and 447,176 being preferred-in solution in phosphoric acid. Specification 599,728 also is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1006634X | 1946-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB599784A true GB599784A (en) | 1948-03-19 |
Family
ID=10867679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14440/46A Expired GB599784A (en) | 1946-05-13 | 1946-05-13 | Improvements in or relating to processes for the production of protective coatings on metal surfaces |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2514941A (en) |
| BE (1) | BE476721A (en) |
| CH (1) | CH275162A (en) |
| FR (1) | FR1006634A (en) |
| GB (1) | GB599784A (en) |
| NL (1) | NL70717C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0826792A1 (en) * | 1996-09-02 | 1998-03-04 | Cfpi Industries | Bath and process for phosphating metal substrates, concentrates for preparing the bath and metal substrates treated according to the process |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE970846C (en) * | 1951-06-28 | 1958-11-06 | Metallgesellschaft Ag | Process to prevent sludge formation in phosphating baths with non-layer-forming metal ions |
| US3218200A (en) * | 1953-08-10 | 1965-11-16 | Lubrizol Corp | Phosphate coating of metals |
| US3090709A (en) * | 1953-08-10 | 1963-05-21 | Lubrizol Corp | Phosphate coating of metals |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE584411C (en) * | 1931-09-22 | 1933-09-20 | Aladar Pacz Dr | Process for the production of corrosion-resistant coatings on iron and steel |
| FR776283A (en) * | 1933-10-12 | 1935-01-22 | Anti-rust product and its manufacturing process | |
| US2418608A (en) * | 1939-05-22 | 1947-04-08 | Parker Rust Proof Co | Corrosion-resistant metallic article and method of making the same |
| US2312855A (en) * | 1940-09-07 | 1943-03-02 | Parker Rust Proof Co | Method of coating aluminum |
-
1946
- 1946-05-13 GB GB14440/46A patent/GB599784A/en not_active Expired
-
1947
- 1947-07-26 US US764029A patent/US2514941A/en not_active Expired - Lifetime
- 1947-10-15 BE BE476721D patent/BE476721A/en unknown
- 1947-10-22 CH CH275162D patent/CH275162A/en unknown
- 1947-10-23 FR FR1006634D patent/FR1006634A/en not_active Expired
- 1947-10-24 NL NL135595A patent/NL70717C/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0826792A1 (en) * | 1996-09-02 | 1998-03-04 | Cfpi Industries | Bath and process for phosphating metal substrates, concentrates for preparing the bath and metal substrates treated according to the process |
| FR2752851A1 (en) * | 1996-09-02 | 1998-03-06 | Cfpi Ind | BATH AND METHOD FOR PHOSPHATION OF METAL SUBSTRATES, CONCENTRATED FOR THE PREPARATION OF SUCH BATH, AND METALLIC SUBSTRATES TREATED WITH SUCH BATH AND METHOD |
| US6068709A (en) * | 1996-09-02 | 2000-05-30 | Cfpi Industries | Bath and process for the phosphatization of metallic substrates, concentrates for the preparation of said bath and metallic substrates having been subjected to a treatment by said bath and process |
Also Published As
| Publication number | Publication date |
|---|---|
| US2514941A (en) | 1950-07-11 |
| FR1006634A (en) | 1952-04-25 |
| BE476721A (en) | 1947-11-29 |
| CH275162A (en) | 1951-05-15 |
| NL70717C (en) | 1952-09-15 |
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