Surface treatment of halide glass articles

Details Surface treatment of halide glass articles Surface treatment of halide glass articles

1995-03-22

1997-04-08

Hoffmann, John

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

Process of manufacturing optical fibers, waveguides, or...

216 97, 216 24, 65412, 65429, 65 31, 65404, C03B 2320, C03B 37012

Patent

active

056183267

ABSTRACT:
The surface quality of halide, preferably fluoride, articles, e.g. articles used in the preparation of halide fibres is improved by cleaning the surface with an aqueous etchant and thereafter removing the etchant by washing the surface with methanol. The aqueous etchant is preferably a solution which contains hydrochloric acid and zirconium oxychloride.

REFERENCES:
patent: 4631114 (1986-12-01), Schneider
patent: 4842627 (1989-06-01), Schneider et al.
patent: 4898777 (1990-02-01), Kindler et al.
patent: 5011252 (1991-04-01), Thorncraft
patent: 5147435 (1992-09-01), Kubota
Siemens; Chemical Abstracts, vol. 113, No. 16, Oct. 15, 1990, Abstract No. 137334h; "Manufacture of optical fibers from fluoride glasses;" p. 321.
Ohishi et al.; IEEE Proceedings J. Optoelectronics, vol. 132, No. 2, Apr. 1985; "Effects of gamma rays on optical transmission of ArF.sub.4 -based fluoride fibres;" pp. 114-118.

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