GB837351A - Improvements in or relating to luminescent materials - Google Patents

Improvements in or relating to luminescent materials

Info

Publication number
GB837351A
GB837351A GB1329/58A GB132958A GB837351A GB 837351 A GB837351 A GB 837351A GB 1329/58 A GB1329/58 A GB 1329/58A GB 132958 A GB132958 A GB 132958A GB 837351 A GB837351 A GB 837351A
Authority
GB
United Kingdom
Prior art keywords
calcium
silicon
cerium
oxides
magnesium
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
GB1329/58A
Inventor
Peter Whitten Ranby
David Richard Palowkar
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.)
Thorn Electrical Industries Ltd
Original Assignee
Thorn Electrical 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
Application filed by Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd
Priority to GB1329/58A priority Critical patent/GB837351A/en
Publication of GB837351A publication Critical patent/GB837351A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7715—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing cerium
    • C09K11/77212—Silicates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Paper (AREA)

Abstract

837,351. Luminescent materials. THORN ELECTRICAL INDUSTRIES Ltd. Jan. 13, 1959 [Jan. 14, 1958], No.1329/58. Class 39(1). A method of preparing a luminescent material comprises mixing together oxides of calcium, or of calcium and magnesium and oxides of silicon, cerium and lithnium or compounds which will thermally decompose to yield these oxides and heating the resulting mixture in a non-oxidising atmosphere to a temperature above 850‹C and below the melting point of the product, at least part of the cerium being present in the cerous valency state. Preferably in the resulting mixture the atomic ratio of calcium to magnesium lies between 1 : 0 and 1 : 5, that of calcium and magnesium together to silicon between 1 : 2 and 6 : 1, that of cerium to silicon lies between 0À002 : 1 and 0À1 : 1 and that of lithnium to silicon between 0À002 : 1 and 1 : 1.
GB1329/58A 1958-01-14 1958-01-14 Improvements in or relating to luminescent materials Expired GB837351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1329/58A GB837351A (en) 1958-01-14 1958-01-14 Improvements in or relating to luminescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1329/58A GB837351A (en) 1958-01-14 1958-01-14 Improvements in or relating to luminescent materials

Publications (1)

Publication Number Publication Date
GB837351A true GB837351A (en) 1960-06-15

Family

ID=9720106

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1329/58A Expired GB837351A (en) 1958-01-14 1958-01-14 Improvements in or relating to luminescent materials

Country Status (1)

Country Link
GB (1) GB837351A (en)

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