JPS56149344A - Crystallized glass - Google Patents

Crystallized glass

Info

Publication number
JPS56149344A
JPS56149344A JP5011780A JP5011780A JPS56149344A JP S56149344 A JPS56149344 A JP S56149344A JP 5011780 A JP5011780 A JP 5011780A JP 5011780 A JP5011780 A JP 5011780A JP S56149344 A JPS56149344 A JP S56149344A
Authority
JP
Japan
Prior art keywords
zro
tio
glass
crystallized glass
crystallized
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.)
Granted
Application number
JP5011780A
Other languages
Japanese (ja)
Other versions
JPS6215495B2 (en
Inventor
Toshiro Yamanaka
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.)
Nippon Electric Glass Co Ltd
Original Assignee
Nippon Electric Glass 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 Nippon Electric Glass Co Ltd filed Critical Nippon Electric Glass Co Ltd
Priority to JP5011780A priority Critical patent/JPS56149344A/en
Publication of JPS56149344A publication Critical patent/JPS56149344A/en
Publication of JPS6215495B2 publication Critical patent/JPS6215495B2/ja
Granted 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
    • 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
    • C03C10/0036—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 SiO2, Al2O3 and a divalent metal oxide as main constituents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (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 provide crystallized glass having a high coefft. of thermal expansion, dense crystal structure and superior mechanical strength, contg. nepheline as the principal crystal phase, and having a special composition contg. TiO2 and ZrO2 as nuclei forming agents besides Na2O, Al2O3 and SiO2.
CONSTITUTION: The crystallized glass contains, by wt., 97% in total of 30W40% SiO2, 20W33% Al2O3, 20W30% Na2O, 0W10% K2O (20W32% Na2O+K2O), 0.5W 4% ZrO2, 1.1W3% TiO2 (2W7% ZrO2+TiO2), 0W12% ZnO and 0W1% B2O3. The glass is manufactured as follows: a batch of starting materials prepared in said composition range is melted, molded into the desired shape, and crystallized by heat treatment. The principal crystal phase of the crystallized glass is nepheline (Na2O. Al2O3.2SiO2), and TiO2 and ZrO2 are precipitated by a small amount. The glass has ≥130×10-7/°Ccoefft. of thermal expansion at 30W500°C.
COPYRIGHT: (C)1981,JPO&Japio
JP5011780A 1980-04-15 1980-04-15 Crystallized glass Granted JPS56149344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5011780A JPS56149344A (en) 1980-04-15 1980-04-15 Crystallized glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5011780A JPS56149344A (en) 1980-04-15 1980-04-15 Crystallized glass

Publications (2)

Publication Number Publication Date
JPS56149344A true JPS56149344A (en) 1981-11-19
JPS6215495B2 JPS6215495B2 (en) 1987-04-08

Family

ID=12850160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5011780A Granted JPS56149344A (en) 1980-04-15 1980-04-15 Crystallized glass

Country Status (1)

Country Link
JP (1) JPS56149344A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002265234A (en) * 2001-03-08 2002-09-18 Asahi Glass Co Ltd Crystallized glass for optical filter substrate and optical filter
WO2002096818A1 (en) * 2001-05-29 2002-12-05 Asahi Glass Company, Limited Crystallized glass for optical filter substrate and optical filter
CN111807705A (en) * 2020-06-29 2020-10-23 成都光明光电股份有限公司 Glass ceramics, glass ceramics product and manufacturing method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002265234A (en) * 2001-03-08 2002-09-18 Asahi Glass Co Ltd Crystallized glass for optical filter substrate and optical filter
JP4736207B2 (en) * 2001-03-08 2011-07-27 旭硝子株式会社 Crystallized glass for optical filter substrate and optical filter
WO2002096818A1 (en) * 2001-05-29 2002-12-05 Asahi Glass Company, Limited Crystallized glass for optical filter substrate and optical filter
US7008891B2 (en) 2001-05-29 2006-03-07 Asahi Glass Company, Limited Crystallized glass for optical filter substrate, and optical filter
CN111807705A (en) * 2020-06-29 2020-10-23 成都光明光电股份有限公司 Glass ceramics, glass ceramics product and manufacturing method thereof

Also Published As

Publication number Publication date
JPS6215495B2 (en) 1987-04-08

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