Glass article strengthened by ion exchange substitution

Details Glass article strengthened by ion exchange substitution Glass article strengthened by ion exchange substitution

1980-02-04

1981-06-16

Robinson, Ellis P.

Stock material or miscellaneous articles

Surface property or characteristic of web, sheet or block

Surface modified glass

65 30E, 428218, B32B 702, C03C 1722, C03C 2100

Patent

active

042738326

ABSTRACT:
A sodium lime silicate type glass body strengthened by substituting potassium ions for sodium ions in a surface layer of the glass by spraying an aqueous solution of potassium ions and from 1 to 6 weight percent of sodium ions upon the glass at a temperature of from about 200.degree. C. to just below the annealing point of the glass.

REFERENCES:
patent: 3218220 (1965-11-01), Weber
patent: 3287201 (1966-11-01), Chrisholm
patent: 3473906 (1969-10-01), Graham
patent: 3607172 (1971-09-01), Poole
patent: 3743491 (1973-07-01), Poole
patent: 3791809 (1974-02-01), Lau
patent: 3798013 (1974-03-01), Inoue
patent: 3844754 (1974-10-01), Grubb et al.
patent: 4017289 (1977-04-01), Hoda
patent: 4055703 (1977-10-01), Rinehart
patent: 4133665 (1979-01-01), Bartholomew

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