GB806837A - Glass compositions - Google Patents

Glass compositions

Info

Publication number
GB806837A
GB806837A GB1133456A GB1133456A GB806837A GB 806837 A GB806837 A GB 806837A GB 1133456 A GB1133456 A GB 1133456A GB 1133456 A GB1133456 A GB 1133456A GB 806837 A GB806837 A GB 806837A
Authority
GB
United Kingdom
Prior art keywords
per cent
glass
april
weight
gallium oxide
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
GB1133456A
Inventor
John Edwin Stanworth
Peter Lewis Baynton
Harold Rawson
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB1133456A priority Critical patent/GB806837A/en
Priority to FR1171125D priority patent/FR1171125A/en
Publication of GB806837A publication Critical patent/GB806837A/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
    • 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
    • C03C3/12—Silica-free oxide glass compositions

Landscapes

  • Chemical & Material Sciences (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)
  • Glass Compositions (AREA)

Abstract

806,837. Glass. BRITISH THOMSONHOUSTON CO. Ltd. April 16, 1957 [April 13, 1956], No. 11334/56. Class 56. Glass for transmitting infra-red radiation consists substantially wholly of calcium and gallium oxides, with the gallium oxide being between 59 and 69 per cent. weight of the total, but up to 8 per cent. of the gallium oxide can be replaced by silica. A particular example which is transparent and pale yellow is made from a batch composition, by weight, CaO 33À2; Ga 2 O 3 59À8; Si O2 7À0. This melts at 1400‹C, and anneals at 700‹C. A sample 4 mm. thick transmits 60-70 per cent. of incident radiation between 3À4 and 4À6 micron. Its refractive index is approximately 1À7.
GB1133456A 1956-04-13 1956-04-13 Glass compositions Expired GB806837A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1133456A GB806837A (en) 1956-04-13 1956-04-13 Glass compositions
FR1171125D FR1171125A (en) 1956-04-13 1957-04-11 Improvements to transparent infrared glasses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1133456A GB806837A (en) 1956-04-13 1956-04-13 Glass compositions

Publications (1)

Publication Number Publication Date
GB806837A true GB806837A (en) 1958-12-31

Family

ID=9984339

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1133456A Expired GB806837A (en) 1956-04-13 1956-04-13 Glass compositions

Country Status (2)

Country Link
FR (1) FR1171125A (en)
GB (1) GB806837A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4942144A (en) * 1989-01-23 1990-07-17 Iowa State University Research Foundation, Inc. Infrared transmitting glasses with high glass transition temperatures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4942144A (en) * 1989-01-23 1990-07-17 Iowa State University Research Foundation, Inc. Infrared transmitting glasses with high glass transition temperatures

Also Published As

Publication number Publication date
FR1171125A (en) 1959-01-22

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