GB599728A - Improvements in or relating to processes for increasing the resistance of metals to corrosion - Google Patents
Improvements in or relating to processes for increasing the resistance of metals to corrosionInfo
- Publication number
- GB599728A GB599728A GB1938044A GB1938044A GB599728A GB 599728 A GB599728 A GB 599728A GB 1938044 A GB1938044 A GB 1938044A GB 1938044 A GB1938044 A GB 1938044A GB 599728 A GB599728 A GB 599728A
- Authority
- GB
- United Kingdom
- Prior art keywords
- complex
- phosphates
- solution
- phosphating
- metals
- 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
- 229910052751 metal Inorganic materials 0.000 title abstract 9
- 239000002184 metal Substances 0.000 title abstract 9
- 238000005260 corrosion Methods 0.000 title abstract 3
- 150000002739 metals Chemical class 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- 235000021317 phosphate Nutrition 0.000 abstract 10
- 150000003013 phosphoric acid derivatives Chemical class 0.000 abstract 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-K [O-]P([O-])([O-])=O Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 4
- 229910052802 copper Inorganic materials 0.000 abstract 4
- 239000010949 copper Substances 0.000 abstract 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 4
- 239000010452 phosphate Substances 0.000 abstract 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 4
- 239000004254 Ammonium phosphate Substances 0.000 abstract 2
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N Ammonium phosphates Chemical class [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 235000019289 ammonium phosphates Nutrition 0.000 abstract 2
- 150000001450 anions Chemical class 0.000 abstract 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract 2
- 229910052793 cadmium Inorganic materials 0.000 abstract 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract 2
- 229910052803 cobalt Inorganic materials 0.000 abstract 2
- 239000010941 cobalt Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 2
- 229910052725 zinc Inorganic materials 0.000 abstract 2
- 239000011701 zinc Substances 0.000 abstract 2
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)
Abstract
A process for producing a corrosion-resistant surface on metals-particularly iron, steel, zinc, cadmium, aluminium and its alloys-comprises applying to the metal surface a phosphatisation solution having dissolved therein a minor proportion, i.e., an amount up to their maximum solubility in the bath and normally not exceeding 1 per cent., of one or more hydrated complex ammonium phosphates of a bivalent metal in which at least 50 per cent. of the metal is in the anion. The structural formula of such complex phosphates is stated to be <FORM:0599728/III/1> where M is one of the metals cobalt, nickel or copper, and they are conveniently added to the phosphating bath whilst in solution in phosphoric acid. An improvement is stated to be obtained by heating the complex phosphate until the evolution of ammonia virtually ceases before adding it to the phosphating solution, and mixtures of such heated complex phosphates with the non-heated type may be used. The phosphating baths described in Specifications 419,487 and 447,176, [both in Group II], are said to be particularly suitable for receiving such complex phosphates, and a method of preparing the complex phosphate of copper is described.ALSO:A process for producing a corrosion-resistant surface on metals-particularly iron, steel, zinc, cadmium, aluminium and its alloys-comprises applying to the metal surface a phosphatisation solution having dissolved therein a minor proportion, i.e. an amount up to their maximum solubility in the bath and normally not exceeding 1 per cent of one or more hydrated complex ammonium phosphates of a bivalent metal in which at least 50 per cent of the metal is in the anion. The structural formula of such complex phosphates is stated to be (NH4)4+[M.(H2O)4]++ [PO4.M.PO4.M.PO4.M.PO4]...... where M is one of the metals cobalt, nickel or copper and they are conveniently added to the phosphating bath whilst in solution in phosphoric acid. An improvement is stated to be obtained by heating the complex phosphate until the evolution of ammonia virtually ceases before adding it to the phosphating solution, and mixtures of such heated complex phosphates with the non-heated type may be used. The phosphating baths described in Specifications 419,487 and 447,176 are said to be particularly suitable for receiving such complex phosphates, and a method of preparing the complex phosphate of copper is described.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB599728A true GB599728A (en) | 1948-03-19 |
Family
ID=1734674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1938044A Expired GB599728A (en) | 1944-10-09 | Improvements in or relating to processes for increasing the resistance of metals to corrosion |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB599728A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2758949A (en) * | 1951-06-28 | 1956-08-14 | Parker Rust Proof Co | Alkali metal phosphate coating solutions and the method of forming coatings therewith |
| 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 |
| CN115044895A (en) * | 2022-05-12 | 2022-09-13 | 华南理工大学 | Corrosion-resistant phosphating solution using enalapril maleate and preparation method and application thereof |
-
1944
- 1944-10-09 GB GB1938044A patent/GB599728A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2758949A (en) * | 1951-06-28 | 1956-08-14 | Parker Rust Proof Co | Alkali metal phosphate coating solutions and the method of forming coatings therewith |
| 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 |
| CN115044895A (en) * | 2022-05-12 | 2022-09-13 | 华南理工大学 | Corrosion-resistant phosphating solution using enalapril maleate and preparation method and application thereof |
| CN115044895B (en) * | 2022-05-12 | 2023-07-18 | 华南理工大学 | Corrosion-resistant phosphating solution using enalapril maleate and preparation method and application thereof |
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