Method for suppressing crystallization of fluoride glass articles by treatment with inorganic fluoride
First Claim
1. A method for suppressing crystallization of an article made of a glass consisting of metal fluorides, the method comprising the step of treating at least one surface of the glass article with a solution of an inorganic fluorine compound, which is selected from the group consisting of alkali metal compounds containing fluorine and ammonium compounds containing fluorine, in an organic solvent having no water by immersing the glass article in said solution for at least about 3 hr.
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Abstract
Crystallization of a fluoride glass article is suppressed by treating the surface(s) of the fluoride glass article with a solution of a fluorine-containing alkali metal compound or a fluorine-containing ammonium compound such as, e.g., LiPF6, NaBF4 or NH4 BF4, in a nonaqueous solvent such as, e.g., ethanol, N,N-dimethylformamide or acetonitrile. The treatment can be made at room temperature.
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Citations
11 Claims
- 1. A method for suppressing crystallization of an article made of a glass consisting of metal fluorides, the method comprising the step of treating at least one surface of the glass article with a solution of an inorganic fluorine compound, which is selected from the group consisting of alkali metal compounds containing fluorine and ammonium compounds containing fluorine, in an organic solvent having no water by immersing the glass article in said solution for at least about 3 hr.
Specification