JPS6428252A - Surface treatment of fluoride glass - Google Patents

Surface treatment of fluoride glass

Info

Publication number
JPS6428252A
JPS6428252A JP18368287A JP18368287A JPS6428252A JP S6428252 A JPS6428252 A JP S6428252A JP 18368287 A JP18368287 A JP 18368287A JP 18368287 A JP18368287 A JP 18368287A JP S6428252 A JPS6428252 A JP S6428252A
Authority
JP
Japan
Prior art keywords
fluoride
glass
glass rod
fluoride glass
crystallize
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
JP18368287A
Other languages
Japanese (ja)
Inventor
Shigeru Hirai
Yoshiki Chigusa
Tsunehisa Kyodo
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP18368287A priority Critical patent/JPS6428252A/en
Publication of JPS6428252A publication Critical patent/JPS6428252A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • C03B37/0146—Furnaces therefor, e.g. muffle tubes, furnace linings
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/80—Non-oxide glasses or glass-type compositions
    • C03B2201/82—Fluoride glasses, e.g. ZBLAN glass

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

PURPOSE:To remove remaining water and hydroxyl group without lowering evenness, by heat-treating fluoride glass at a temperature not to crystallize the glass while bringing a liquid or gaseous fluoride into contact with the surface of the fluoride glass. CONSTITUTION:A fluoride glass rod 4 (e.g. ZrF4-BaF2-LaF3-based glass rod) is rotatably laid in a reaction tube 1 equipped with an inlet 2 and an outlet 3 for a fluoride. Then the reaction tube 1 is inserted into a heating furnace 8, a gaseous or liquid fluoride (e.g. chlorine trifluoride or nitrogen trifluoride) is sent from the inlet 2 for a fluoride and the fluoride glass rod 4 is heat-treated at a temperature not to crystallize the glass while rotating the glass rod. Consequently, adsorbed water and hydroxyl group remaining in the glass rod 4 are chemically reacted with the fluoride and removed so that fluoride glass having improved optical characteristics such as transmission characteristics can be obtained.
JP18368287A 1987-07-24 1987-07-24 Surface treatment of fluoride glass Pending JPS6428252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18368287A JPS6428252A (en) 1987-07-24 1987-07-24 Surface treatment of fluoride glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18368287A JPS6428252A (en) 1987-07-24 1987-07-24 Surface treatment of fluoride glass

Publications (1)

Publication Number Publication Date
JPS6428252A true JPS6428252A (en) 1989-01-30

Family

ID=16140081

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18368287A Pending JPS6428252A (en) 1987-07-24 1987-07-24 Surface treatment of fluoride glass

Country Status (1)

Country Link
JP (1) JPS6428252A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0426530A (en) * 1990-05-18 1992-01-29 Central Glass Co Ltd Surface treatment of fluoride glass

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879835A (en) * 1981-11-06 1983-05-13 Nippon Telegr & Teleph Corp <Ntt> Surface-treating method for optical fiber preform
JPS60108349A (en) * 1983-11-15 1985-06-13 Nippon Telegr & Teleph Corp <Ntt> Surface treatment of fluoride glass

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879835A (en) * 1981-11-06 1983-05-13 Nippon Telegr & Teleph Corp <Ntt> Surface-treating method for optical fiber preform
JPS60108349A (en) * 1983-11-15 1985-06-13 Nippon Telegr & Teleph Corp <Ntt> Surface treatment of fluoride glass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0426530A (en) * 1990-05-18 1992-01-29 Central Glass Co Ltd Surface treatment of fluoride glass

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