GB386739A - Production of phosphate coatings on metals - Google Patents

Production of phosphate coatings on metals

Info

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
Application number
GB30357/31A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
METAL FINISHING RES CORP
Original Assignee
METAL FINISHING RES CORP
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24192476&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB386739(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by METAL FINISHING RES CORP filed Critical METAL FINISHING RES CORP
Publication of GB386739A publication Critical patent/GB386739A/en
Expired legal-status Critical Current

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.
GB30357/31A 1931-07-07 1931-11-02 Production of phosphate coatings on metals Expired GB386739A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (7)

* Cited by examiner, † Cited by third party
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
BE383250A (en) 1931-11-30
US1911726A (en) 1933-05-30
FR724422A (en) 1932-04-27

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