GB1245286A - Method of phosphatization of iron products or iron-based alloy products - Google Patents

Method of phosphatization of iron products or iron-based alloy products

Info

Publication number
GB1245286A
GB1245286A GB55526/68A GB5552668A GB1245286A GB 1245286 A GB1245286 A GB 1245286A GB 55526/68 A GB55526/68 A GB 55526/68A GB 5552668 A GB5552668 A GB 5552668A GB 1245286 A GB1245286 A GB 1245286A
Authority
GB
United Kingdom
Prior art keywords
iron
articles
zinc
potential difference
phosphatization
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
GB55526/68A
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Publication of GB1245286A publication Critical patent/GB1245286A/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
    • C23C22/12—Orthophosphates containing zinc cations
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/36—Phosphatising
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/02—Etching
    • C25F3/06—Etching of iron or steel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less

Abstract

1,245,286. Phosphatisation of iron; electrolytically producing iron ions. INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE. Nov. 22, 1968 [Dec.4, 1967], No. 55526/68. Headings C7B and C7U. Protective phosphate coatings are formed on the surface of iron or iron alloy articles by a process in which the articles are immersed in a phosphatizing bath containing zinc in solution, the first stage of the process consisting in enriching the metal/solution interface with iron ions by surface dissolution by means of a direct potential difference applied between a counterelectrode and the articles constituting respectively the cathode and the anode of an electrolytic cell, and the second stage of the process consisting in cancelling the said potential difference to bring about the formation on the surface of said articles of a layer of phosphates rich in iron from iron ions localized at the metal/solution interface and of a layer of zinc phosphate from the zinc introduced initially into the phosphatization bath. The phosphatization bath may contain zinc phosphate, accelerated with zinc nitrate, and the potential difference is maintained for a time sufficient for 1À8 to 5 coulombs per square cm. to pass through the electrolytic cell.
GB55526/68A 1967-12-04 1968-11-22 Method of phosphatization of iron products or iron-based alloy products Expired GB1245286A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR130842 1967-12-04

Publications (1)

Publication Number Publication Date
GB1245286A true GB1245286A (en) 1971-09-08

Family

ID=8642700

Family Applications (1)

Application Number Title Priority Date Filing Date
GB55526/68A Expired GB1245286A (en) 1967-12-04 1968-11-22 Method of phosphatization of iron products or iron-based alloy products

Country Status (5)

Country Link
US (1) US3544390A (en)
BE (1) BE724457A (en)
FR (1) FR1554824A (en)
GB (1) GB1245286A (en)
LU (1) LU57403A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5645706A (en) * 1992-04-30 1997-07-08 Nippondenso Co., Ltd. Phosphate chemical treatment method
DE4238242C2 (en) * 1992-09-17 2003-04-24 Rieger Franz Metallveredelung Process for pretreating light metals according to patent DE 4231052 C2
US20140042030A1 (en) * 2012-08-10 2014-02-13 General Electric Company Sealed laminated structure, system and method for electrolytic processing the same
US9393759B2 (en) 2013-10-24 2016-07-19 General Electric Company Metal laminate structures with systems and methods for treating

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US870937A (en) * 1907-04-09 1907-11-12 Thomas Watts Coslett Treatment of iron or steel for preventing oxidation or rusting.
US1007069A (en) * 1910-11-25 1911-10-31 Thomas Watts Coslett Treatment of iron or steel to prevent the oxidation or rusting thereof.
US1867527A (en) * 1930-04-15 1932-07-12 Bullard Co Process for anodic removal of surface metal film
US2132438A (en) * 1933-12-11 1938-10-11 American Chem Paint Co Method of coating metal
BE410815A (en) * 1934-08-13
US2366477A (en) * 1939-06-22 1945-01-02 William Bayley Company Protective coating
US2590927A (en) * 1948-07-17 1952-04-01 Westinghouse Electric Corp Electrolytic method of removing burrs

Also Published As

Publication number Publication date
US3544390A (en) 1970-12-01
LU57403A1 (en) 1969-03-04
BE724457A (en) 1969-05-02
FR1554824A (en) 1969-01-24

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