Modified zirconia induction furnace

Details Modified zirconia induction furnace Modified zirconia induction furnace

1982-05-28

1985-08-06

Bashore, S. Leon

Glass manufacturing

Processes

Forming product or preform from molten glass

65 13, 219 1049R, C03B 3701

Patent

active

045333785

ABSTRACT:
A high temperature induction furnace (10) for drawing lightguide fiber (52) from a silica preform (44) has an axially located tubular zirconium dioxide susceptor (34) therein. Prior to use, at least a portion of the inside surface of the susceptor (34) is coated with a vapor deposited silica "soot" (54). The silica soot (54) is then consolidated at an elevated temperature. Surprisingly, such a technique substantially eliminates migration of zirconium dioxide particles from the susceptor (34) to the preform (44) and/or the fiber 52 without deleteriously affecting the susceptor (34) and/or the operation of the furnace (10).

REFERENCES:
patent: 3328143 (1967-06-01), Hicks, Jr.
patent: 3729335 (1973-04-01), Domrachev et al.
patent: 4052153 (1977-10-01), Borer et al.
patent: 4055391 (1977-10-01), Schmidt et al.
patent: 4242553 (1980-12-01), Berkman et al.
patent: 4450333 (1984-05-01), Adrejco et al.

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