GB386739A - Production of phosphate coatings on metals - Google Patents
Production of phosphate coatings on metalsInfo
- Publication number
- GB386739A GB386739A GB30357/31A GB3035731A GB386739A GB 386739 A GB386739 A GB 386739A GB 30357/31 A GB30357/31 A GB 30357/31A GB 3035731 A GB3035731 A GB 3035731A GB 386739 A GB386739 A GB 386739A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphate
- oxidizing agent
- copper
- zinc
- bath
- 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
- 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)
Abstract
The action of an acid phosphate solution on metals, e.g. iron, steel, zinc, or magnesium, is accelerated by the addition of an oxidizing agent capable of diminishing or removing the hydrogen blanket generated at the surface of the metal. When coating iron or steel or when using a solution containing ferrous phosphate, only oxidizing agents which do not react to any great extent with the ferrous iron in the bath, such as nitrates, nitrites, sulphites, nitric acid, sodium tungstate, uranyl acetate, chlorates, bromates, iodates, or organic compounds such as methylene blue, can be employed: in other cases common oxidizing agents such as air, hydrogen peroxide, manganates, permanganates, manganese dioxide, chromates, dichromates, and quinone are also satisfactory. In forming a powder for replenishing a bath the oxidizing agent, e.g. sodium nitrate, is preferably dusted with an inert material, e.g. calcium carbonate or zinc carbonate, to inhibit reaction between the oxidizing agent and the phosphate powder before they are dissolved. Copper may be added to the solution as an additional accelerator, a bath formed by dissolving zinc dihydrogen phosphate and copper nitrate, and a replenishing powder consisting of zinc dihydrogen phosphate, copper nitrate, and calcium carbonate, being described. Copper may be added in small quantities to a phosphate solution containing an oxidizing agent such as sodium nitrate. The solutions may be used at any temperature from room temperature to boiling-point.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US549312A US1911726A (en) | 1931-07-07 | 1931-07-07 | Production of phosphate coatings on metals |
Publications (1)
Publication Number | Publication Date |
---|---|
GB386739A true GB386739A (en) | 1933-01-26 |
Family
ID=24192476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30357/31A Expired GB386739A (en) | 1931-07-07 | 1931-11-02 | Production of phosphate coatings on metals |
Country Status (4)
Country | Link |
---|---|
US (1) | US1911726A (en) |
BE (1) | BE383250A (en) |
FR (1) | FR724422A (en) |
GB (1) | GB386739A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE910373C (en) * | 1941-05-26 | 1954-05-03 | Parker Rust Proof Company | Process for the production of a corrosion-resistant coating on iron or zinc |
DE971252C (en) * | 1954-12-24 | 1958-12-31 | Siemens Ag | Insulation sleeve for cage windings embedded in grooves |
DE974004C (en) * | 1937-06-02 | 1960-08-18 | Metallgesellschaft Ag | Process to improve the non-cutting deformation of workpieces made of iron and zinc |
FR2519028A1 (en) * | 1981-12-30 | 1983-07-01 | Asturienne Mines Comp Royale | PROCESS FOR THE PREPARATION OF A BLACK COATING ON THE SURFACE OF PARTS OF WHICH AT LEAST ONE FACE IS IN ZINC |
ES2178917A1 (en) * | 2000-04-05 | 2003-01-01 | Fundacion Inasmet | Chemical preservation of magnesium and its alloys consists of chemical conversion by a permanganate and phosphate mixture in solution, with cleaning |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE746470C (en) * | 1935-02-18 | 1944-07-21 | Metallgesellschaft Ag | Process for refreshing zinc phosphate rust protection baths |
DE966914C (en) * | 1936-05-01 | 1957-09-19 | Metallgesellschaft Ag | Process for the formation of phosphate coatings |
US2434525A (en) * | 1943-08-23 | 1948-01-13 | Rheem Mfg Co | Coating on metals |
US2434237A (en) * | 1943-09-13 | 1948-01-06 | Sk Wellman Co | Apparatus for applying powdered metal briquets to curved metallic surfaces |
US2465750A (en) * | 1944-05-23 | 1949-03-29 | Reid Engineering Company | Composition for preparing aluminum and the like for welding |
US2591479A (en) * | 1947-05-12 | 1952-04-01 | Parker Rust Proof Co | Method of and solution for coating surfaces chiefly of zinc |
US2487137A (en) * | 1947-09-10 | 1949-11-08 | Armco Steel Corp | Producing coatings on metal |
NL91161C (en) * | 1952-08-28 | |||
US2923608A (en) * | 1956-04-13 | 1960-02-02 | Fmc Corp | Method of improving the bonding properties of steel surfaces |
US3178320A (en) * | 1960-07-29 | 1965-04-13 | John A Henricks | Method and composition for the formation of smooth zinc phosphate coatings on steel |
US3141797A (en) * | 1961-09-07 | 1964-07-21 | Lubrizol Corp | Phosphating process |
US3425854A (en) * | 1966-05-02 | 1969-02-04 | Kern C Borden | Metal conditioning bath comprising sodium hydroxide,nitric acid,and gum arabic |
US4330345A (en) * | 1980-12-08 | 1982-05-18 | Chemfil Corporation | Phosphate coating process and composition |
CN105177548B (en) * | 2015-10-26 | 2017-08-04 | 东莞市圣龙特电子科技有限公司 | A kind of surface granosealing technique of copper powder |
-
1931
- 1931-07-07 US US549312A patent/US1911726A/en not_active Expired - Lifetime
- 1931-10-07 FR FR724422D patent/FR724422A/en not_active Expired
- 1931-10-08 BE BE383250D patent/BE383250A/xx unknown
- 1931-11-02 GB GB30357/31A patent/GB386739A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE974004C (en) * | 1937-06-02 | 1960-08-18 | Metallgesellschaft Ag | Process to improve the non-cutting deformation of workpieces made of iron and zinc |
DE910373C (en) * | 1941-05-26 | 1954-05-03 | Parker Rust Proof Company | Process for the production of a corrosion-resistant coating on iron or zinc |
DE971252C (en) * | 1954-12-24 | 1958-12-31 | Siemens Ag | Insulation sleeve for cage windings embedded in grooves |
FR2519028A1 (en) * | 1981-12-30 | 1983-07-01 | Asturienne Mines Comp Royale | PROCESS FOR THE PREPARATION OF A BLACK COATING ON THE SURFACE OF PARTS OF WHICH AT LEAST ONE FACE IS IN ZINC |
EP0083263A2 (en) * | 1981-12-30 | 1983-07-06 | Asturienne France | Process for applying a block coating to objects having at least one zinc surface |
EP0083263A3 (en) * | 1981-12-30 | 1984-05-09 | Asturienne Mines Comp Royale | Process for applying a block coating to objects having at least one zinc surface |
ES2178917A1 (en) * | 2000-04-05 | 2003-01-01 | Fundacion Inasmet | Chemical preservation of magnesium and its alloys consists of chemical conversion by a permanganate and phosphate mixture in solution, with cleaning |
Also Published As
Publication number | Publication date |
---|---|
FR724422A (en) | 1932-04-27 |
US1911726A (en) | 1933-05-30 |
BE383250A (en) | 1931-11-30 |
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