Solution doping of porous preforms

Details Solution doping of porous preforms Solution doping of porous preforms

1991-06-14

1992-09-29

Jones, W. Gary

Glass manufacturing

Processes

Forming product or preform from molten glass

65 182, 65901, 65 603, 65 3013, 264 15, 501 37, C03C 2502

Patent

active

051511177

ABSTRACT:
Disclosed is a method of forming a doped glass body. The glass body is formed by adding a dopant to a glass preform, at least part of which has interconnective pores. The porous preform is immersed in a solution of a salt of the dopant dissolved in an organic solvent having no OH groups. The solvent is removed, and the porous glass preform is heat treated to consolidate it into a non-porous glassy body containing the dopant dispersed throughout at least a portion of the body. An OH-free solvent is selected because of its beneficial effect on the preform during the drying step. Whereas OH-containing solvents such as water and alcohol caused cracking and/or flaking of the outer surface of the porous preform following the drying step, an undamaged surface is formed by the present invention.

REFERENCES:
patent: 3859073 (1975-01-01), Schultz
patent: 4110096 (1978-08-01), Macedo
patent: 4141710 (1979-02-01), Aulich
patent: 4183620 (1980-01-01), Macedo et al.
patent: 4225330 (1980-09-01), Kakuzen
patent: 4299608 (1981-11-01), Macedo
patent: 4302231 (1981-11-01), Macedo et al.
patent: 4336049 (1982-06-01), Takahashi et al.
patent: 4414012 (1983-11-01), Suto et al.
patent: 5047076 (1991-09-01), Cognolato et al.

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