GB1114355A - Improvements relating to methods of manufacturing dielectric materials - Google Patents

Improvements relating to methods of manufacturing dielectric materials

Info

Publication number
GB1114355A
GB1114355A GB4065566A GB4065566A GB1114355A GB 1114355 A GB1114355 A GB 1114355A GB 4065566 A GB4065566 A GB 4065566A GB 4065566 A GB4065566 A GB 4065566A GB 1114355 A GB1114355 A GB 1114355A
Authority
GB
United Kingdom
Prior art keywords
weight
titanium dioxide
mixture
methods
dielectric materials
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
GB4065566A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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
Priority claimed from FR31508A external-priority patent/FR88645E/en
Application filed by Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1114355A publication Critical patent/GB1114355A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • C03C3/07—Glass compositions containing silica with less than 40% silica by weight containing lead
    • C03C3/072—Glass compositions containing silica with less than 40% silica by weight containing lead containing boron
    • 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
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0054—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing PbO, SnO2, B2O3
    • 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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/102—Glass compositions containing silica with 40% to 90% silica, by weight containing lead
    • C03C3/108—Glass compositions containing silica with 40% to 90% silica, by weight containing lead containing boron
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Insulating Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

A method of manufacturing a dielectric material, comprising preparing a mixture of boron trioxide, aluminium oxide, silicon dioxide, lead monoxide, titanium dioxide and/or equivalent compounds of these oxides, heating the mixtures to form a vitreous material having a positive temperature coefficient of dielectric constant, and heating this vitreous material between 500 DEG C. and 1200 DEG C. until sufficient titanium dioxide has been precipitated in the material in the form of rutile so that the temperature coefficient of dielectric constant, within a desired temperature range is not positive wherein the mixture contains 2-15% by weight of titanium dioxide and less than 50% by weight of silicon dioxide. The other materials of the mixture are preferably present in the following amounts expressed in percentage by weight BaO3 10-55%; Al2O3 5-25%; PbO 10-50%. A number of specific examples are given.
GB4065566A 1965-09-15 1966-09-12 Improvements relating to methods of manufacturing dielectric materials Expired GB1114355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR31508A FR88645E (en) 1963-12-30 1965-09-15 Manufacturing process of materials for dielectric applications

Publications (1)

Publication Number Publication Date
GB1114355A true GB1114355A (en) 1968-05-22

Family

ID=8588398

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4065566A Expired GB1114355A (en) 1965-09-15 1966-09-12 Improvements relating to methods of manufacturing dielectric materials

Country Status (1)

Country Link
GB (1) GB1114355A (en)

Similar Documents

Publication Publication Date Title
GB966732A (en) Improved method of glass treatment and product
GB1105111A (en) Improvements in dental materials
ES294612A1 (en) Method of manufacture of glass articles of high mechanical resistance (Machine-translation by Google Translate, not legally binding)
JPS51138711A (en) Glass having high content of silber oxide and method of manufacturing thereof
GB812344A (en) Improvements in ferroelectric ceramic compositions
GB1098958A (en) Improvements relating to electrical insulators
GB1114355A (en) Improvements relating to methods of manufacturing dielectric materials
GB1081730A (en) Ceramic materials
US2294931A (en) Vitreous enamel containing zirconium and process for preparing same
GB1085250A (en) Improvements relating to a method of manufacturing dielectric materials
GB1419522A (en) Marble-like materials
GB1051703A (en)
Ptak et al. Influence of temperature on lead removal from a mixture of oxides: ZnO, Fe sub 2 O sub 3, CaO, Al sub 2 O sub 3, and SiO sub 2 containing PbSO sub 4
GB1121524A (en) A process for the production of ceramic pigments
GB1151770A (en) Improvements relating to Methods of Manufacturing Semi-Crystalling Objects.
GB1015068A (en) Improvements relating to methods of manufacturing glass objects
GB949401A (en) Improvements in or relating to micaceous insulating materials
GB736117A (en) Improvements relating to ceramic dielectric materials
GB758129A (en) Improvements in or relating to mouldable micaceous insulating materials
GB896617A (en) Ceramic compositions and their preparation
GB882944A (en) Improvements in or relating to heat resistant dielectrics
GB974909A (en) Improvements in or relating to glass
GB1153278A (en) Method of Conditioning Glass Forming Rollers
GB996033A (en)
GB823636A (en) Improvements in or relating to dielectric ceramic material and the manufacture of such material