GB983332A - Improvements relating to insulated metal objects - Google Patents

Improvements relating to insulated metal objects

Info

Publication number
GB983332A
GB983332A GB3874262A GB3874262A GB983332A GB 983332 A GB983332 A GB 983332A GB 3874262 A GB3874262 A GB 3874262A GB 3874262 A GB3874262 A GB 3874262A GB 983332 A GB983332 A GB 983332A
Authority
GB
United Kingdom
Prior art keywords
sodium phosphate
laminations
insulation
parts
solution
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
GB3874262A
Inventor
Duane Lowell Barney
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to GB3874262A priority Critical patent/GB983332A/en
Publication of GB983332A publication Critical patent/GB983332A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
    • H01B3/087—Chemical composition of glass
    • 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
    • C03C4/00—Compositions for glass with special properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

A layer of insulation on the surface of a metal object is formed by applying a solution of glassy sodium phosphate to said surface and curing to a hard glassy substance. The sodium phosphate used is in the range 1Na2O/1P2O5 to 1.4Na2O/1P2O5, in particular, hexametaphosphate or metaphosphate. Aqueous solutions of 25-50 parts by weight phosphate to 100 parts by weight water are used. Curing temperatures range 475-800 DEG C. for 1/2 -10 minutes. Coatings may be used as the insulation for steel laminations, and to construct magnetic cores for electrical apparatus, to inhibit the flow of eddy currents. The solution may contain a filler material, e.g. silica aerogel, to increase the gap between successive coated laminations where extra spacing is required. It is stated that the annealing of laminations produces an oxide coating with which liquid sodium phosphate reacts.
GB3874262A 1962-10-12 1962-10-12 Improvements relating to insulated metal objects Expired GB983332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3874262A GB983332A (en) 1962-10-12 1962-10-12 Improvements relating to insulated metal objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3874262A GB983332A (en) 1962-10-12 1962-10-12 Improvements relating to insulated metal objects

Publications (1)

Publication Number Publication Date
GB983332A true GB983332A (en) 1965-02-17

Family

ID=10405415

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3874262A Expired GB983332A (en) 1962-10-12 1962-10-12 Improvements relating to insulated metal objects

Country Status (1)

Country Link
GB (1) GB983332A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025379A (en) 1973-05-03 1977-05-24 Whetstone Clayton N Method of making laminated magnetic material
FR2410682A1 (en) * 1977-11-30 1979-06-29 Westinghouse Electric Corp COATINGS RESISTANT TO THE PENETRATION OF HYDROGEN AND ITS ISOTOPES
GB2118977A (en) * 1982-02-16 1983-11-09 Standard Telephones Cables Ltd Corrosion inhibiting coatings for non-ferrous metal surfaces
DE10357540A1 (en) * 2003-12-10 2005-07-14 Deutsches Zentrum für Luft- und Raumfahrt e.V. Process for depositing aerogels onto a metallic conducting surface used as a heat protection layer, e.g. on turbine blades comprises contacting a metallic surface with a sol and applying a voltage, and depositing the sol on the surface

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025379A (en) 1973-05-03 1977-05-24 Whetstone Clayton N Method of making laminated magnetic material
FR2410682A1 (en) * 1977-11-30 1979-06-29 Westinghouse Electric Corp COATINGS RESISTANT TO THE PENETRATION OF HYDROGEN AND ITS ISOTOPES
GB2118977A (en) * 1982-02-16 1983-11-09 Standard Telephones Cables Ltd Corrosion inhibiting coatings for non-ferrous metal surfaces
DE10357540A1 (en) * 2003-12-10 2005-07-14 Deutsches Zentrum für Luft- und Raumfahrt e.V. Process for depositing aerogels onto a metallic conducting surface used as a heat protection layer, e.g. on turbine blades comprises contacting a metallic surface with a sol and applying a voltage, and depositing the sol on the surface
DE10357540B4 (en) * 2003-12-10 2007-08-16 Deutsches Zentrum für Luft- und Raumfahrt e.V. Process for the electrochemical deposition of aerogels on metallic surfaces, anisotropic coating and their use

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