GB963128A - Improvements in or relating to the formation of chemical conversion coating upon metal surfaces - Google Patents
Improvements in or relating to the formation of chemical conversion coating upon metal surfacesInfo
- Publication number
- GB963128A GB963128A GB11328/63A GB1132863A GB963128A GB 963128 A GB963128 A GB 963128A GB 11328/63 A GB11328/63 A GB 11328/63A GB 1132863 A GB1132863 A GB 1132863A GB 963128 A GB963128 A GB 963128A
- Authority
- GB
- United Kingdom
- Prior art keywords
- litre
- amine
- concentration
- gms
- nitrite ion
- 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
- 230000015572 biosynthetic process Effects 0.000 title 1
- 238000007739 conversion coating Methods 0.000 title 1
- 239000002184 metal Substances 0.000 title 1
- 239000000126 substance Substances 0.000 title 1
- 150000001412 amines Chemical class 0.000 abstract 7
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 abstract 4
- -1 amine compound Chemical class 0.000 abstract 3
- 229940005654 nitrite ion Drugs 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 abstract 2
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 150000001342 alkaline earth metals Chemical class 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 abstract 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 abstract 1
- UAOMVDZJSHZZME-UHFFFAOYSA-N diisopropylamine Chemical compound CC(C)NC(C)C UAOMVDZJSHZZME-UHFFFAOYSA-N 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 235000010288 sodium nitrite Nutrition 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 239000000080 wetting agent Substances 0.000 abstract 1
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
- C23C22/10—Orthophosphates containing oxidants
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)
Abstract
Iron and steel surfaces are phosphated with aqueous acidic alkali metal (to include ammonium mono-hydrogen- and ammonium dihydrogen-) phosphate solutions containing nitrite ion (NO2-) and an amine compound of general formula HNR1R2; where R1, R2 the same or not, each being a saturated straight or branched alkyl or o -hydroxyalykyl group having 2-4 carbon atoms: when the amine concentration ranges from 0.3-1.0 gms./litre the <FORM:0963128/C6-C7/1> and when the amine exceeds 1.0 gm./litre [NO2-] ranges from 0.3/amine m.w. X 46 to 10.0 gms./ litre. The pH of the solutions ranges from 4.0-5.8, preferably 4.5-5.7. The temperature is at least 120 DEG F. (49 DEG C.), the operating range being 120-150 DEG F. (49-66 DEG C.) and preferably 130-145 DEG F. (57-63 DEG C.). The amines comprise diethyl amine, di-2-ethanolamine, di-i-propanolamine, di-butylamine, di-i-propylamine and di-butanol-amines. Coating time varies between 30 seconds and 5 minutes, preferably 1-3 minutes. Concentration of the nitrite ion varies directly with respect to concentration of the amine compound up to 1.0 gm./litre of the latter as prescribed by the above formula. For amine contents in excess of 1.0 gm./litre the nitrite ion concentration may rise to a maximum of 10 gms./litre. 30 gms./litre or more of amine may be used as determined only by solubility considerations but in practice quantities are limited to 1.0 gm./litre. The nitrite ion may be introduced as a salt of alkali or alkaline earth metals, preferably NaNO2. Although at least 0.3 gm./litre of amine compound must be incorporated in the solutions, it is preferred to use 0.5 gm./litre of amine as the practical minimum concentration due to drag-out losses. A wetting agent may be incorporated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US184959A US3129121A (en) | 1962-04-04 | 1962-04-04 | Phosphate coating solution and method of coating ferriferous metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB963128A true GB963128A (en) | 1964-07-08 |
Family
ID=22678999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11328/63A Expired GB963128A (en) | 1962-04-04 | 1963-03-21 | Improvements in or relating to the formation of chemical conversion coating upon metal surfaces |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3129121A (en) |
| DE (1) | DE1269452B (en) |
| FR (1) | FR1352568A (en) |
| GB (1) | GB963128A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2418118A1 (en) * | 1974-04-13 | 1975-10-23 | Collardin Gmbh Gerhard | Phosphate spray coating for iron and steel - from aq acid soln of alkali- and/or ammonium-orthophosphate and accelerator |
| DE2505172A1 (en) * | 1975-02-07 | 1976-09-16 | Collardin Gmbh Gerhard | Phosphate coating of iron and steel sheet - by two step process improving bath life |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3432270A (en) * | 1966-07-25 | 1969-03-11 | Amchem Prod | Method for determining nitrite concentration in acidic accelerated phosphating solutions |
| US5073196A (en) * | 1989-05-18 | 1991-12-17 | Henkel Corporation | Non-accelerated iron phosphating |
| IT1397902B1 (en) * | 2010-01-26 | 2013-02-04 | Np Coil Dexter Ind Srl | PRETREATMENT PROCESSES FOR PAINTING, LOW ENVIRONMENTAL IMPACT, ALTERNATIVE TO TRADITIONAL PHOSPHATE TREATMENTS. |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1936533A (en) * | 1931-09-08 | 1933-11-21 | Du Pont | Phosphates of alkylolamine compounds and their production |
| US2298280A (en) * | 1939-02-02 | 1942-10-13 | Parker Rust Proof Co | Treatment of metal |
| US2333206A (en) * | 1939-05-13 | 1943-11-02 | Du Pont | Protection of ferrous metals against corrosion |
| US2328540A (en) * | 1940-06-08 | 1943-09-07 | Monsanto Chemicals | Method of and material for treating metal |
| US2318606A (en) * | 1941-07-31 | 1943-05-11 | Du Pont | Corrosion inhibition |
| US2574955A (en) * | 1948-07-14 | 1951-11-13 | Tide Water Associated Oil Comp | Esterified alkylolamine salts of acid esters of phosphorus acids |
| NL187985B (en) * | 1953-06-08 | Elf Aquitaine | PROCEDURE FOR CONTROLLING WATER INFLUENCE DURING OR AFTER DRILLING A BORE WELL. | |
| US2835618A (en) * | 1954-03-09 | 1958-05-20 | Parker Rust Proof Co | Solution and method for producing heat resistant electrical insulation coatings on ferrous surfaces |
-
1962
- 1962-04-04 US US184959A patent/US3129121A/en not_active Expired - Lifetime
-
1963
- 1963-03-21 GB GB11328/63A patent/GB963128A/en not_active Expired
- 1963-04-02 FR FR930178A patent/FR1352568A/en not_active Expired
- 1963-04-02 DE DEP1269452A patent/DE1269452B/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2418118A1 (en) * | 1974-04-13 | 1975-10-23 | Collardin Gmbh Gerhard | Phosphate spray coating for iron and steel - from aq acid soln of alkali- and/or ammonium-orthophosphate and accelerator |
| DE2505172A1 (en) * | 1975-02-07 | 1976-09-16 | Collardin Gmbh Gerhard | Phosphate coating of iron and steel sheet - by two step process improving bath life |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1352568A (en) | 1964-02-14 |
| DE1269452B (en) | 1968-05-30 |
| US3129121A (en) | 1964-04-14 |
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