A new germanate glass-ceramic material in the BaO-Ga203-Ge02 system is developed for infrared (IR) dome and window applications. This glass-ceramic material has a grain size of ~0.2-0.5um and is transparent in the 3-5um IR region. Glass ceramization results in 40% improvement in hardness, 65% increase in elastic modulus, 116% increase in strength, and 134% increase in fracture toughness over the base glass.
Origin
Naval Research Labs, Washington Dc, Usa
Journal Title
J Am Ceram Soc 85 12 2002 3114-3116
Sector
Glass Ceramics
Class
GC 500