JPS5777045A - Glass containing phosphate - Google Patents

Glass containing phosphate

Info

Publication number
JPS5777045A
JPS5777045A JP15104080A JP15104080A JPS5777045A JP S5777045 A JPS5777045 A JP S5777045A JP 15104080 A JP15104080 A JP 15104080A JP 15104080 A JP15104080 A JP 15104080A JP S5777045 A JPS5777045 A JP S5777045A
Authority
JP
Japan
Prior art keywords
mgo
glass
coefft
cao
thermal expansion
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.)
Pending
Application number
JP15104080A
Other languages
Japanese (ja)
Inventor
Mikihiko Yagi
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP15104080A priority Critical patent/JPS5777045A/en
Publication of JPS5777045A publication Critical patent/JPS5777045A/en
Pending 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
    • C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron

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

PURPOSE: To especially reduce the coefft. of thermal expansion of alumina-phosphate-borate glass, to relatively drop the melting temp. and to raise the transition point and hardness by adding MgO as an essential component to the glass.
CONSTITUTION: This glass has a composition ≥95wt% of which consists of, by wt., 9W36% P2O5, 8W45% SiO2, 3W42% B2O3, 18W32% Al2O3 and 6W32% MgO+ CaO (0W8%CaO). since quantitative importance is attached to MgO between said MgO and CaO, the coefft. of thermal expansion can be reduced especially. By said composition this glass contg. phosphate has physical properties such as about 30W 80×10-7cm/cm.°C coefft. of thermal expansion, about 630W740°C transition point, about 427W542kg/mm2 Knoop hardness and about 685W782°C sofening point, and it is suitable for various uses as a heat resistant material, an electrically insulating material, etc.
COPYRIGHT: (C)1982,JPO&Japio
JP15104080A 1980-10-28 1980-10-28 Glass containing phosphate Pending JPS5777045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15104080A JPS5777045A (en) 1980-10-28 1980-10-28 Glass containing phosphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15104080A JPS5777045A (en) 1980-10-28 1980-10-28 Glass containing phosphate

Publications (1)

Publication Number Publication Date
JPS5777045A true JPS5777045A (en) 1982-05-14

Family

ID=15509978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15104080A Pending JPS5777045A (en) 1980-10-28 1980-10-28 Glass containing phosphate

Country Status (1)

Country Link
JP (1) JPS5777045A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2428674A (en) * 2005-07-21 2007-02-07 Schott Ag Glass composition consisting of oxides which at low temperatures form volatile fluorides by reaction with fluorine
JP2007516933A (en) * 2003-12-31 2007-06-28 コーニング インコーポレイテッド Aluminum silicate glass
EP2857369A4 (en) * 2012-05-28 2016-03-23 Nichias Corp Si-Mg-BASED INORGANIC FIBER AND COMPOSITION CONTAINING SAME
JP2016074575A (en) * 2014-10-08 2016-05-12 株式会社オハラ Glass
WO2022230535A1 (en) * 2021-04-27 2022-11-03 株式会社 オハラ Glass, optical glass, and optical element

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007516933A (en) * 2003-12-31 2007-06-28 コーニング インコーポレイテッド Aluminum silicate glass
GB2428674A (en) * 2005-07-21 2007-02-07 Schott Ag Glass composition consisting of oxides which at low temperatures form volatile fluorides by reaction with fluorine
GB2428674B (en) * 2005-07-21 2008-07-09 Schott Ag Glass Composition Exclusively Consisting Of Oxides Which Already At Low Temperatures Form Volatile Fluorides By Reaction With Fluorine And Its Use
US7566672B2 (en) 2005-07-21 2009-07-28 Schott Ag Glass composition exclusively consisting of oxides which already at low temperatures form volatile fluorides by reaction with fluorine and its use
EP2857369A4 (en) * 2012-05-28 2016-03-23 Nichias Corp Si-Mg-BASED INORGANIC FIBER AND COMPOSITION CONTAINING SAME
JP2016074575A (en) * 2014-10-08 2016-05-12 株式会社オハラ Glass
WO2022230535A1 (en) * 2021-04-27 2022-11-03 株式会社 オハラ Glass, optical glass, and optical element

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