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GB706315A - Improvements in and relating to the production of phosphate coatings on magnetic laminae - Google Patents

Improvements in and relating to the production of phosphate coatings on magnetic laminae

Info

Publication number
GB706315A
GB706315A GB22064/49A GB2206449A GB706315A GB 706315 A GB706315 A GB 706315A GB 22064/49 A GB22064/49 A GB 22064/49A GB 2206449 A GB2206449 A GB 2206449A GB 706315 A GB706315 A GB 706315A
Authority
GB
United Kingdom
Prior art keywords
chlorate
laminae
relating
production
phosphate coatings
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
GB22064/49A
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
Priority to GB22064/49A priority Critical patent/GB706315A/en
Publication of GB706315A publication Critical patent/GB706315A/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
    • C23C22/14—Orthophosphates containing zinc cations containing also chlorate anions
    • 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
    • C23C22/73—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 characterised by the process
    • C23C22/74—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 characterised by the process for obtaining burned-in conversion coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
    • H01F1/18—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets with insulating coating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

Insulating coatings are formed on laminae of magnetic ferrous alloys by treating them with an accelerated aqueous solution of a dihydrogen phosphate, the accelerator being a chlorate or a mixture of a chlorate and a nitrate, the proportions being such that the ratio (chlorate and nitrate): phosphate lies between 0.1 and 0.6. Treatment may be by immersion, spraying or flooding, e.g. at 170 DEG F. and the coated laminae may be baked, e.g. at 250 DEG F. and subsequently treated with a solution containing hexavalent chromium. The coatings may be used as basis for the application of other finishes.
GB22064/49A 1949-08-24 1949-08-24 Improvements in and relating to the production of phosphate coatings on magnetic laminae Expired GB706315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB22064/49A GB706315A (en) 1949-08-24 1949-08-24 Improvements in and relating to the production of phosphate coatings on magnetic laminae

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22064/49A GB706315A (en) 1949-08-24 1949-08-24 Improvements in and relating to the production of phosphate coatings on magnetic laminae

Publications (1)

Publication Number Publication Date
GB706315A true GB706315A (en) 1954-03-31

Family

ID=10173316

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22064/49A Expired GB706315A (en) 1949-08-24 1949-08-24 Improvements in and relating to the production of phosphate coatings on magnetic laminae

Country Status (1)

Country Link
GB (1) GB706315A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875111A (en) * 1954-12-06 1959-02-24 Parker Rust Proof Co Method of forming phosphate coatings on drawn wire
CN113299452A (en) * 2021-07-27 2021-08-24 零八一电子集团四川力源电子有限公司 Composite material structure, magnetic core body and magnetic core for high-voltage pulse transformer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875111A (en) * 1954-12-06 1959-02-24 Parker Rust Proof Co Method of forming phosphate coatings on drawn wire
CN113299452A (en) * 2021-07-27 2021-08-24 零八一电子集团四川力源电子有限公司 Composite material structure, magnetic core body and magnetic core for high-voltage pulse transformer
CN113299452B (en) * 2021-07-27 2021-09-28 零八一电子集团四川力源电子有限公司 Composite material structure, magnetic core body and magnetic core for high-voltage pulse transformer

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