GB392728A - Process for the protection against corrosion of aluminium and its alloys and magnesium and its alloys - Google Patents
Process for the protection against corrosion of aluminium and its alloys and magnesium and its alloysInfo
- Publication number
- GB392728A GB392728A GB12006/32A GB1200632A GB392728A GB 392728 A GB392728 A GB 392728A GB 12006/32 A GB12006/32 A GB 12006/32A GB 1200632 A GB1200632 A GB 1200632A GB 392728 A GB392728 A GB 392728A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluoride
- bath
- alloys
- aluminium
- addition
- 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
- C23C22/68—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 solutions with pH between 6 and 8
Abstract
A protective coating is formed on aluminium, magnesium, or their alloys by treatment in a bath, preferably hot, containing one or more neutral complex salts, the anion of which comprises the element fluorine with one or several other elements, the cation being of any character, and one of the elements in the salt being an element above aluminium in the electro-chemical potential series. Baths containing molybdenum compounds or salts of metals of the iron group are excluded from the scope of the invention. The bath may be replenished either by the addition of the complex fluoride or by the addition of a simple fluoride which will react in the bath to form the complex salt. The following baths are specified: (a) a solution containing potassium ortho-or meta-fluoranadate, sodium fluosilicate, and sodium potassium tartrate as a pickling agent; (b) a solution containing potassium fluotitanate, chromium fluoride, and sodium fluoride. The latter bath may be replenished by the addition of titanium fluoride. Tartrates, citrates, fluorides, &c. may be added to dissolve or precipitate the secondary products of the reaction. The coatings formed may be subsequently treated with greases, oils, waxes, gums, tar, &c. Specifications 302,943 and 273,956, [both in Class 82 (ii), Washing granular &c.], are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR732230T | 1931-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB392728A true GB392728A (en) | 1933-05-25 |
Family
ID=9121175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12006/32A Expired GB392728A (en) | 1931-04-27 | 1932-04-26 | Process for the protection against corrosion of aluminium and its alloys and magnesium and its alloys |
Country Status (4)
Country | Link |
---|---|
US (1) | US1957354A (en) |
BE (1) | BE388139A (en) |
FR (1) | FR732230A (en) |
GB (1) | GB392728A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4148670A (en) * | 1976-04-05 | 1979-04-10 | Amchem Products, Inc. | Coating solution for metal surface |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE750367C (en) * | 1936-02-26 | 1945-01-16 | Process for the production of corrosion-resistant coatings on magnesium and its alloys | |
DE764929C (en) * | 1938-11-09 | 1954-04-05 | Bosch Gmbh Robert | Process for producing fluoride-containing protective layers on workpieces made of magnesium and its alloys |
US2431595A (en) * | 1942-08-06 | 1947-11-25 | Aluminum Co Of America | Method for cleaning aluminum |
NL174337B (en) * | 1952-04-03 | Corning Glass Works | DEVICE FOR REINDING A CONTINUOUS FIBER, IN PARTICULAR GLASS FIBER, ON SPOOLS. | |
US3090709A (en) * | 1953-08-10 | 1963-05-21 | Lubrizol Corp | Phosphate coating of metals |
US2946728A (en) * | 1955-06-23 | 1960-07-26 | Cleveland Pneumatic Ind Inc | Adherent electroplating on titanium |
US2836525A (en) * | 1956-05-18 | 1958-05-27 | American Chem Paint Co | Method of and composition for coating zirconium |
US2955061A (en) * | 1957-08-02 | 1960-10-04 | Parker Rust Proof Co | Fluoride coating on zirconium |
JP2003147544A (en) * | 2001-11-07 | 2003-05-21 | Nippon Parkerizing Co Ltd | Surface treatment film of zinc plated film, surface treatment solution for zinc plated film, and surface treatment method |
-
0
- BE BE388139D patent/BE388139A/xx unknown
-
1931
- 1931-04-27 FR FR732230D patent/FR732230A/en not_active Expired
-
1932
- 1932-04-26 GB GB12006/32A patent/GB392728A/en not_active Expired
- 1932-04-26 US US607670A patent/US1957354A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4148670A (en) * | 1976-04-05 | 1979-04-10 | Amchem Products, Inc. | Coating solution for metal surface |
Also Published As
Publication number | Publication date |
---|---|
BE388139A (en) | |
US1957354A (en) | 1934-05-01 |
FR732230A (en) | 1932-09-15 |
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