Glass manufacturing – Processes – Devitrifying glass or vitrifying crystalline glass
Patent
1975-03-19
1976-11-02
Douglas, Winston A.
Glass manufacturing
Processes
Devitrifying glass or vitrifying crystalline glass
106 396, C03B 3200, C03C 322
Patent
active
039894967
ABSTRACT:
The present invention is concerned with the production of articles having the physical properties and internal microstructure normally associated with glass-ceramic articles, but which can be formed spontaneously from a molten glass batch. Hence, the instant invention avoids the heat treatment of a precursor glass body, such as is required in the manufacture of conventional glass-ceramic bodies to cause the crystallization in situ thereof. More specifically, this invention relates to the production of highly-crystalline glass-ceramic articles having compositions within the BaO and/or SrO-Fe.sub.2 O.sub.3 -SiO.sub.2 field, wherein BaO and/or SrO-Fe.sub.2 O.sub.3 -SiO.sub.2 solid solution crystals comprise the predominant crystal phase, which can be formed spontaneously from a molten glass batch.
REFERENCES:
patent: 3804608 (1974-04-01), Gaskell et al.
Bell Mark
Corning Glass Works
Douglas Winston A.
Janes Jr. Clinton S.
Patty, Jr. Clarence R.
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