Glass manufacturing – Processes – Operating under inert or reducing conditions
Patent
1990-03-28
1991-04-09
Lindsay, Robert L.
Glass manufacturing
Processes
Operating under inert or reducing conditions
65134, 501 32, C03C 311, C03B 804
Patent
active
050061429
ABSTRACT:
The invention is a process for the preparation of high quality oxynitride glasses without resorting to high pressures. Nitrogen-containing compounds such as Si.sub.3 N.sub.4 are first encapsulated in a low melting temperature glass. Particles of the encapsulated nitrogen-containing compound are mixed with other oxide glass-formers and melted in an atmosphere of flowing nitrogen and in the presence of buffering gas to form the oxynitride glass. Glasses containing up to 15 at % nitrogen have been prepared by this method.
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O'Brien Michael H.
Schuetz Stanley T.
Weidner Jerry R.
Anderson Thomas G.
Lindsay Robert L.
Moser William R.
The United States of America as represented by The United States
Weinberger James W.
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