GB1463698A - Coatings for ferrous metals - Google Patents

Coatings for ferrous metals

Info

Publication number
GB1463698A
GB1463698A GB2818174A GB2818174A GB1463698A GB 1463698 A GB1463698 A GB 1463698A GB 2818174 A GB2818174 A GB 2818174A GB 2818174 A GB2818174 A GB 2818174A GB 1463698 A GB1463698 A GB 1463698A
Authority
GB
United Kingdom
Prior art keywords
june
composition
weight
hydroxide
complex
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
GB2818174A
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.)
Merck and Co Inc
Original Assignee
Merck and Co Inc
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 Merck and Co Inc filed Critical Merck and Co Inc
Publication of GB1463698A publication Critical patent/GB1463698A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14766—Fe-Si based alloys
    • H01F1/14775—Fe-Si based alloys in the form of sheets
    • H01F1/14783—Fe-Si based alloys in the form of sheets with insulating coating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • 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
    • C23C24/00—Coating starting from inorganic powder
    • 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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Glass Compositions (AREA)

Abstract

1463698 Enamelling metals MERCK & CO Inc 25 June 1974 [26 June 1973] 28181/74 Heading C1M [Also in Division C7] A composition for coating on to ferrous materials prior to annealing comprises magnesium oxide and/or hydroxide; a boron compound; an amorphous magnesia-silica complex in which the mole ratio MgO : SiO 2 is in the range 1 : 25 to 14 : 1; and 0À001 to 2À0% by weight of alkali metal oxide or hydroxide based on the weight of the complex. A slurry of the composition may be coated on to silicon steel by immersion, brushing or spraying. The steel is then annealed in a neutral or reducing atmosphere at a temperature between 950 and 1500‹ C. for 2 to 50 hours.
GB2818174A 1973-06-26 1974-06-25 Coatings for ferrous metals Expired GB1463698A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37372873A 1973-06-26 1973-06-26

Publications (1)

Publication Number Publication Date
GB1463698A true GB1463698A (en) 1977-02-02

Family

ID=23473629

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2818174A Expired GB1463698A (en) 1973-06-26 1974-06-25 Coatings for ferrous metals

Country Status (8)

Country Link
JP (1) JPS5037632A (en)
BE (1) BE816841A (en)
CA (1) CA1042322A (en)
DE (1) DE2430425A1 (en)
FR (1) FR2296701A1 (en)
GB (1) GB1463698A (en)
IT (1) IT1016136B (en)
SE (1) SE7407600L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5843466B2 (en) * 1979-06-07 1983-09-27 新日本製鐵株式会社 Annealing separator for unidirectional silicon steel sheets

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB587374A (en) * 1943-11-10 1947-04-23 Westinghouse Electric Int Co Improvements in or relating to magnetic members and material and to coating compositions for use therewith
GB1287424A (en) * 1968-11-01 1972-08-31 Nippon Steel Corp Process for producing oriented magnetic steel plates low in the iron loss
BE754777A (en) * 1969-08-18 1971-02-12 Morton Int Inc COMPOSITION OF COATING BASED ON MAGNESIUM OXIDE AND PROCEDURE FOR USING THIS COMPOSITION
JPS4813814B1 (en) * 1969-12-18 1973-05-01
BE790822A (en) * 1971-11-02 1973-04-30 Merck & Co Inc COATINGS FOR FERROUS SUBSTRATES

Also Published As

Publication number Publication date
FR2296701A1 (en) 1976-07-30
JPS5037632A (en) 1975-04-08
FR2296701B1 (en) 1978-08-11
DE2430425A1 (en) 1975-01-16
IT1016136B (en) 1977-05-30
BE816841A (en) 1974-12-27
CA1042322A (en) 1978-11-14
SE7407600L (en) 1974-12-27

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee