GB830632A - Improvements relating to the production of coatings on metallic surfaces - Google Patents
Improvements relating to the production of coatings on metallic surfacesInfo
- Publication number
- GB830632A GB830632A GB3300/58A GB330058A GB830632A GB 830632 A GB830632 A GB 830632A GB 3300/58 A GB3300/58 A GB 3300/58A GB 330058 A GB330058 A GB 330058A GB 830632 A GB830632 A GB 830632A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluoride
- alloys
- sodium
- condensed
- iron
- 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
- C23C22/34—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 fluorides or complex fluorides
- C23C22/37—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 fluorides or complex fluorides containing also hexavalent chromium compounds
- C23C22/38—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 fluorides or complex fluorides containing also hexavalent chromium compounds containing also phosphates
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
An aqueous acidic solution for producing coatings on metallic surfaces contains hexavalent chromium, fluoride, and at least one condensed phosphate in an amount not exceeding 0.5% W/V calculated as the condensed sodium phosphate. Condensed phosphate is defined as the condensed phosphoric acids and their alkali metal and ammonium salts in which the mole ratio of cationic oxides (including water of composition), to anionic oxides is greater than 0 and less than 3. Hexavalent chromium may be introduced as chromic acid, alkali metal dichromate, ammonium dichromate or as the dichromate of zinc, calcium, cadmium or aluminium; fluoride may be introduced as hydrofluoric acid, sodium bifluoride, sodium fluoride + sulphuric acid, or as a complex fluoride of aluminium, titanium, zirconium, boron, silicon or iron, e.g. potassium titanium fluoride, potassium zirconium fluoride, fluoborate, and hydrofluosilicic acid; and specific condensed phosphates mentioned are disodium pyrophosphate, tetrasodium pyrophosphate, sodium tripolyphosphate and sodium hexametaphosphate. The solution may also contain nickel sulphate and ferrous sulphate. The acidity of the solutions is adjusted during operation by the addition of nitric acid. Metals which may be coated are aluminium and alloys thereof, iron and alloys thereof, nodular graphite iron, galvanised iron, zinc and alloys thereof, and magnesium and alloys thereof. The coatings are stated to form a good basis for paint, and for adhesives used in applying plastic sheets to metal surfaces.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US637350A US2868682A (en) | 1957-01-31 | 1957-01-31 | Chromate-fluoride type coating solutions and method of treating metal surfaces therewith |
Publications (1)
Publication Number | Publication Date |
---|---|
GB830632A true GB830632A (en) | 1960-03-16 |
Family
ID=24555550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3300/58A Expired GB830632A (en) | 1957-01-31 | 1958-01-31 | Improvements relating to the production of coatings on metallic surfaces |
Country Status (7)
Country | Link |
---|---|
US (1) | US2868682A (en) |
BE (1) | BE563956A (en) |
CH (1) | CH373616A (en) |
DE (1) | DE1096153B (en) |
FR (1) | FR1190562A (en) |
GB (1) | GB830632A (en) |
NL (2) | NL107091C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2179960A (en) * | 1985-09-06 | 1987-03-18 | Parker Chemical Co | Passivation of zinc and zinc-aluminium alloys |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3278343A (en) * | 1963-03-12 | 1966-10-11 | Amchem Prod | Conversion coating of magnesium alloy surfaces |
NL125324C (en) * | 1963-08-06 | 1900-01-01 | ||
US3717509A (en) * | 1970-11-06 | 1973-02-20 | Diamond Shamrock Corp | Coated metal and method |
US5451271A (en) * | 1990-02-21 | 1995-09-19 | Henkel Corporation | Conversion treatment method and composition for aluminum and aluminum alloys |
AU642478B2 (en) * | 1990-02-21 | 1993-10-21 | Henkel Corporation | Conversion treatment method and composition for aluminum and aluminum alloys |
EP0915996A4 (en) * | 1996-04-26 | 2001-06-13 | Henkel Corp | Chromate passivating and storage stable concentrate solutions therefor |
CN103194743B (en) * | 2013-03-13 | 2014-12-24 | 华东理工大学 | Surface treatment method of nickel metal strip for lithium-ion battery negative electrode ear |
CN111100972B (en) * | 2020-02-26 | 2021-12-31 | 江苏省沙钢钢铁研究院有限公司 | Method for preventing carbon sleeve roller of continuous annealing furnace from nodulation |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL65809C (en) * | 1945-06-30 | |||
US2438877A (en) * | 1945-09-06 | 1948-03-30 | American Chem Paint Co | Composition for and method of coating aluminum |
US2499261A (en) * | 1945-11-23 | 1950-02-28 | Hall Lab Inc | Compositions and methods for depositing amorphous metal-phosphate coatings on metal surfaces |
-
0
- NL NL224487D patent/NL224487A/xx unknown
- BE BE563956D patent/BE563956A/xx unknown
- NL NL107091D patent/NL107091C/xx active
-
1957
- 1957-01-31 US US637350A patent/US2868682A/en not_active Expired - Lifetime
- 1957-11-05 FR FR1190562D patent/FR1190562A/en not_active Expired
- 1957-12-19 CH CH5399257A patent/CH373616A/en unknown
-
1958
- 1958-01-16 DE DEM36422A patent/DE1096153B/en active Pending
- 1958-01-31 GB GB3300/58A patent/GB830632A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2179960A (en) * | 1985-09-06 | 1987-03-18 | Parker Chemical Co | Passivation of zinc and zinc-aluminium alloys |
GB2179960B (en) * | 1985-09-06 | 1990-01-24 | Parker Chemical Co | Passivation process and composition for zinc and zinc-aluminium alloys |
Also Published As
Publication number | Publication date |
---|---|
US2868682A (en) | 1959-01-13 |
NL107091C (en) | |
BE563956A (en) | |
DE1096153B (en) | 1960-12-29 |
CH373616A (en) | 1963-11-30 |
NL224487A (en) | |
FR1190562A (en) | 1959-10-14 |
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