GB828916A - Improvements in and relating to the formation of phosphate coatings - Google Patents

Improvements in and relating to the formation of phosphate coatings

Info

Publication number
GB828916A
GB828916A GB10761/56A GB1076156A GB828916A GB 828916 A GB828916 A GB 828916A GB 10761/56 A GB10761/56 A GB 10761/56A GB 1076156 A GB1076156 A GB 1076156A GB 828916 A GB828916 A GB 828916A
Authority
GB
United Kingdom
Prior art keywords
nitrate
ratio
oxidant
phosphate
ions
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
GB10761/56A
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.)
Pyrene Co Ltd
Original Assignee
Pyrene Co Ltd
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
Application filed by Pyrene Co Ltd filed Critical Pyrene Co Ltd
Publication of GB828916A publication Critical patent/GB828916A/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
    • C23C22/22—Orthophosphates containing alkaline earth metal cations

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)
  • Lubricants (AREA)

Abstract

Iron, steel, zinc and aluminium surfaces are given fine-grained nodular phosphate coatings by treating with an aqueous acidic solution containing 0.05 to 1.5% (wt/vol) Zn, 0.012 to 7.5% Ca, the weight ratio of Ca to Zn being 0.25 to 5.0; phosphate ions and an oxidizing agent, the ratio of oxidant to phosphate ions being equivalent in effect on the rate of coating formation to a ratio of nitrate ions to phosphate ions of 0.2 to 5.0 by weight. A nitrate is the preferred oxidant but others may be a chlorate, nitrate, m-nitrobenzene sulphonate, hydrogen peroxide, dinitrobenzene sulphonate, bromate iodate, picric acid, t-butyl hydrogen peroxide or quinnone, or mixtures thereof. Equivalent ratios are said to be 0.02 to 2.0 for chlorate, 0.004 to 0.05 for nitrite, 0.06 to 3.0 for m-nitrobenzene sulphonate, 0.0008 to 0.01 for H2O2, 0.04 to 1.5 for dinitrobenzene sulphonate; for other oxidants and for mixtures the equivalent of the nitrate to phosphate ion ratio of 0.2 to 5.0 may be determined by trial. Chloride ions may be added if nitrate is not the oxidant. The Ca may be added as oxide, by dioxide, chloide, mono- or di-hydrogen phosphate, but preferably as nitrate. When nitrate or chlorate (or both) is the oxidant the ratio of Ca ion to NO3 and/or ClO3 ion should be 0.1 to 0.3 by weight; and generally the amount of Ca should increase with amount of oxidant. A replenishing mixture or concentrated aqueous solution contains Zn, Ca and PO4 radicals or ions, the ratio of Ca to Zn by weight being 0.06 to 1.4 and of Zn to PO4 being 0.2 to 0.4. The phosphated surface may be rinsed in hot water followed by aqueous chromic acid containing e.g. 0.7 gm/litre, and finally oiled, then if desired painted.
GB10761/56A 1955-04-08 1956-04-09 Improvements in and relating to the formation of phosphate coatings Expired GB828916A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US828916XA 1955-04-08 1955-04-08
US1149507XA 1955-04-08 1955-04-08
US344278XA 1955-04-08 1955-04-08
US1096152X 1955-04-08
US500287A US3161549A (en) 1955-04-08 1955-04-08 Solution for forming zinc phosphate coatings on metallic surfaces

Publications (1)

Publication Number Publication Date
GB828916A true GB828916A (en) 1960-02-24

Family

ID=61026489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10761/56A Expired GB828916A (en) 1955-04-08 1956-04-09 Improvements in and relating to the formation of phosphate coatings

Country Status (6)

Country Link
US (1) US3161549A (en)
BE (1) BE546590A (en)
CH (1) CH344278A (en)
DE (1) DE1096152B (en)
FR (1) FR1149507A (en)
GB (1) GB828916A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0793737A1 (en) * 1994-12-06 1997-09-10 Henkel Corporation Zinc phosphate conversion coating composition and process
EP0813620A1 (en) * 1995-03-07 1997-12-29 Henkel Corporation Composition and process for forming an underpaint coating on metals
US5888315A (en) * 1995-03-07 1999-03-30 Henkel Corporation Composition and process for forming an underpaint coating on metals
US5932292A (en) * 1994-12-06 1999-08-03 Henkel Corporation Zinc phosphate conversion coating composition and process

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB944897A (en) * 1961-07-18 1963-12-18 Amchem S A Improvements in or relating to the formation of chemical conversion coatings upon metal surfaces
DE1192023B (en) * 1961-08-04 1965-04-29 Metallgesellschaft Ag Process and solution or means for applying phosphate layers to metal surfaces
US3939014A (en) * 1974-11-20 1976-02-17 Amchem Products, Inc. Aqueous zinc phosphating solution and method of rapid coating of steel for deforming
US4140551A (en) * 1977-08-19 1979-02-20 Heatbath Corporation Low temperature microcrystalline zinc phosphate coatings, compositions, and processes for using and preparing the same
JPS6020463B2 (en) * 1982-06-04 1985-05-22 日本パ−カライジング株式会社 Cold working lubrication treatment method for steel materials
DE3800835A1 (en) * 1988-01-14 1989-07-27 Henkel Kgaa METHOD FOR PHOSPHATING METAL SURFACES

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE310756C (en) *
GB440215A (en) * 1934-06-27 1935-12-23 Frederick David Waterfall An improved treatment for producing a modified surface on ferrous articles
DE697506C (en) * 1935-11-27 1940-10-17 Metallgesellschaft Akt Ges Refill solution for solutions for the production of rust-resistant phosphate coatings on metal surfaces
US2125387A (en) * 1936-10-02 1938-08-02 Pittsburgh Plate Glass Co Protective coating
US2295545A (en) * 1938-02-04 1942-09-15 Parker Rust Proof Co Treatment of metal
US2375468A (en) * 1938-02-04 1945-05-08 Parker Rust Proof Co Phosphate coating of metals
US2272216A (en) * 1938-06-06 1942-02-10 Parker Rust Proof Co Method of coating copper and its alloys
DE907966C (en) * 1939-03-20 1954-04-01 Metallgesellschaft Ag Process for the production of phosphate coatings on metals
US2312855A (en) * 1940-09-07 1943-03-02 Parker Rust Proof Co Method of coating aluminum
DE741937C (en) * 1941-03-11 1943-11-20 Metallgesellschaft Ag Process for the production of phosphate coatings on metals
US2351605A (en) * 1942-03-02 1944-06-20 Parker Rust Proof Co Metal treatment
US2499261A (en) * 1945-11-23 1950-02-28 Hall Lab Inc Compositions and methods for depositing amorphous metal-phosphate coatings on metal surfaces
US2479423A (en) * 1946-02-07 1949-08-16 American Chem Paint Co Method of and materials for treating surfaces of iron, zinc, and alloys of each
US2540314A (en) * 1947-07-24 1951-02-06 Parker Rust Proof Co Process and compositions for applying phosphate coatings
NL70735C (en) * 1948-03-15 1952-09-15 Eivind Eckbo PROCESS FOR THE PREPARATION OF A DURABLE POWDERED PHOSPHATE FOR USE IN PROTECTING IRON AGAINST CORROSION
US2588234A (en) * 1950-10-31 1952-03-04 John A Henricks Method of drawing metal
US2724668A (en) * 1952-10-03 1955-11-22 Parker Rust Proof Co Combination cleaning and coating solution for metallic surfaces and method of forming coatings therewith

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0793737A1 (en) * 1994-12-06 1997-09-10 Henkel Corporation Zinc phosphate conversion coating composition and process
EP0793737A4 (en) * 1994-12-06 1998-03-04 Henkel Corp Zinc phosphate conversion coating composition and process
US5932292A (en) * 1994-12-06 1999-08-03 Henkel Corporation Zinc phosphate conversion coating composition and process
EP0813620A1 (en) * 1995-03-07 1997-12-29 Henkel Corporation Composition and process for forming an underpaint coating on metals
EP0813620A4 (en) * 1995-03-07 1998-02-25 Henkel Corp Composition and process for forming an underpaint coating on metals
US5888315A (en) * 1995-03-07 1999-03-30 Henkel Corporation Composition and process for forming an underpaint coating on metals

Also Published As

Publication number Publication date
FR1149507A (en) 1957-12-27
DE1096152B (en) 1960-12-29
CH344278A (en) 1960-01-31
US3161549A (en) 1964-12-15
BE546590A (en) 1956-04-14

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