Method of improving the mechanical strength of glass

Details Method of improving the mechanical strength of glass Method of improving the mechanical strength of glass

1972-01-17

1976-12-21

Schmidt, William H.

Glass manufacturing

Processes

Devitrifying glass or vitrifying crystalline glass

65 30R, 65DIG14, 106 397, 427372A, 427380, 427401, C03B 3200, C03C 1722, C03C 322

Patent

active

039986179

ABSTRACT:
The mechanical strength of glass is improved by applying a fluid epitaxially active crystalline primary layer to a glass plate consisting of a glass inclined to crystallization. The glass plate with the mentioned fluid layer thereon is subjected to a temperature treatment to cause a reaction between the glass plate and the primary layer. During this reaction, the primary layer is effective to cause in and near the surface of the glass plate an elimination of at least a portion of the crystals which have a smaller thermic expansion coefficient than the starting glass of the glass plate.

REFERENCES:
patent: 2998675 (1961-09-01), Olcott et al.
patent: 3397076 (1968-08-01), Little et al.
patent: 3458552 (1969-07-01), Hauck et al.
patent: 3464880 (1969-09-01), Rinehart
patent: 3597252 (1971-08-01), Schroeder

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