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Infrared Transparent Germanate Glass‐Ceramics
Author(s) -
Bayya Shyam S.,
Sanghera Jasbinder S.,
Aggarwal Ishwar D.,
Wojcik Joshua A.
Publication year - 2002
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2002.tb00594.x
Subject(s) - germanate , materials science , ceramic , composite material , fracture toughness , infrared , flexural strength , glass ceramic , elastic modulus , mineralogy , optics , doping , optoelectronics , geology , physics
A new germanate glass‐ceramic material in the BaO‐Ga 2 O 3 ‐GeO 2 system is developed for infrared (IR) dome and window applications. This glass‐ceramic material has a grain size of ∼0.2–0.5 μm and is transparent in the 3–5 μm 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.