Lithium-aluminosilicate glass ceramic with high keatite...

Details Lithium-aluminosilicate glass ceramic with high keatite... Lithium-aluminosilicate glass ceramic with high keatite...

2006-09-19

2006-09-19

Vincent, Sean (Department: 1731)

Glass manufacturing

Processes

Devitrifying glass or vitrifying crystalline glass

C065S061000

Reexamination Certificate

active

07107793

ABSTRACT:
A lithium-aluminosilicate glass ceramic is transformed by a suitable heat treatment into a glass ceramic comprising at least 80 vol.-% of keatite mixed crystals. This may be utilized for the preparation of optical or mechanical high-precision parts having a high temperature resistance, a good stability and compatibility with components consisting of metals having a small coefficient of thermal expansion based on nickel and iron, such as Invar®.

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