GB644626A - Improvements in or relating to ceramic insulators - Google Patents

Improvements in or relating to ceramic insulators

Info

Publication number
GB644626A
GB644626A GB35189/47A GB3518947A GB644626A GB 644626 A GB644626 A GB 644626A GB 35189/47 A GB35189/47 A GB 35189/47A GB 3518947 A GB3518947 A GB 3518947A GB 644626 A GB644626 A GB 644626A
Authority
GB
United Kingdom
Prior art keywords
oxides
titanium dioxide
sintering
impurities
relating
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
GB35189/47A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB644626A publication Critical patent/GB644626A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

A ceramic insulator having a dielectric constant of at least 95 and a dielectric loss factor not exceeding 20 X 10-4 at 200 metres is made by sintering titanium dioxide containing not more than 1 per cent basic impurities and sufficient of another oxide or oxides which will form salts with basic oxides to neutralize the impurities. Oxides of beryllium, aluminium, silicon and zirconium are suitable additions. Subsequent to sintering, rapid cooling is effected from a temperature slightly below the temperature of dissociation of the titanium dioxide to at least 700 DEG C. Specification 510,475 is referred to.
GB35189/47A 1939-05-17 1947-12-31 Improvements in or relating to ceramic insulators Expired GB644626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL644626X 1939-05-17

Publications (1)

Publication Number Publication Date
GB644626A true GB644626A (en) 1950-10-11

Family

ID=19791881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35189/47A Expired GB644626A (en) 1939-05-17 1947-12-31 Improvements in or relating to ceramic insulators

Country Status (1)

Country Link
GB (1) GB644626A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2338478A (en) * 1998-06-15 1999-12-22 South Bank Univ Entpr Ltd Ceramic composites; resonators

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2338478A (en) * 1998-06-15 1999-12-22 South Bank Univ Entpr Ltd Ceramic composites; resonators
GB2338478B (en) * 1998-06-15 2002-12-24 South Bank Univ Entpr Ltd Ceramic composites

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