Avoidance of surface deterioration of glass during strengthening

Glass manufacturing – Processes – With chemically reactive treatment of glass preform

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65 3013, 65116, C03B 2702

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active

048835234

ABSTRACT:
Processes in which glass parts are strengthened by ion exchange with cations in a molten salt bath are improved by removal of the small amounts of moisture and other forms of the hydroxyl group present in the salt melt by either chemical or electrolytic means, prior to the ion exchange. The chemical means involve reacting the hydroxyl-containing compounds with the chlorine-containing gas, while the electrolytic means involve electrolysis to gaseous hydrogen and oxygen. Preferred embodiments further include a gas purge prior to the chemical or electrolytic treatment.

REFERENCES:
patent: 3287201 (1966-11-01), Chisholm et al.
patent: 3425816 (1969-02-01), Garfinkel et al.
patent: 3630704 (1971-12-01), Garfinkel et al.
patent: 3687799 (1972-08-01), Spanoudis
patent: 3711393 (1973-01-01), Garfinkel
patent: 4038090 (1977-07-01), Gliemeroth
patent: 4756733 (1988-07-01), Houde-Walter et al.
T. S. Izumitani, "Optical Glass," American Institute of Physics Translation Series, N.Y. 1986.
M. J. Weber, ed., CRC Handbook of Laser Science and Technology, vol. I, Lasers and Masers, CRC Press, Boca Raton, FL.
S. H. White, "The Role of Water During the Purification of High-Temperature Ionic Solvents," Ionic Liquids, Inman & Lovering, eds., Plenum Press, London, 1981.
K. A. Cerqua et al., "Strengthened Glass for High Average Power Laser Applications," SPIE Proceedings, vol. 736, 1987.
K. A. Cerqua et al., "Ion Exchange Strengthening of Nd Doped Phosphate Laser Glass," 17th Annual Symposium on Optical Materials for High Power Lasers, Nov. 1985.

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