Ion exchange strengthened glass containing P.sub.2 O.sub.5

Details Ion exchange strengthened glass containing P.sub.2 O.sub.5 Ion exchange strengthened glass containing P.sub.2 O.sub.5

1976-07-19

1977-10-25

Robinson, Ellis

Stock material or miscellaneous articles

Surface property or characteristic of web, sheet or block

Surface modified glass

106 52, 65 30E, 65 30R, 428218, B32B 1700, C03C 2100

Patent

active

040557030

ABSTRACT:
An alkali-alumina-silica-zirconia glass capable of being chemically strengthened by exchanging sodium ions in the glass with potassium ions from an external source below the strain point of the glass has its ion exchange rate increased by incorporating 2 to 20 percent P.sub.2 O.sub.5 into the initial glass composition.

REFERENCES:
patent: 3357876 (1967-12-01), Rinehart
patent: 3485647 (1969-12-01), Harrington
patent: 3485702 (1969-12-01), Mochel
patent: 3498773 (1970-03-01), Grubb
patent: 3498801 (1970-03-01), Keul
patent: 3778335 (1973-12-01), Boyd
patent: 3790430 (1974-02-01), Mochel
patent: 3907577 (1975-09-01), Kiefer

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