Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
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Transparent ZnAl2O4 ceramics fabricated by spark plasma sintering
Byung-Nam KIMKeijiro HIRAGAAhrong JEONGChungfeng HUTohru S. SUZUKIJon-Do YUNYoshio SAKKA
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2014 年 122 巻 1429 号 p. 784-787

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Highly transparent zinc aluminate ceramics were fabricated by the solid-state reaction using a spark plasma sintering machine. The sintered body exhibited a microstructure consisting of submicron-sized grains and extremely low porosities. Annealing of the sintered body in air improved the transmission close to the theoretical limit in a wavelength range of 1–5 µm. The band gap energy estimated from the absorption coefficient was 4.3 eV. The Young’s modulus and the bulk modulus measured for the fully dense zinc aluminates were 282 and 211 GPa, respectively.

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© 2014 The Ceramic Society of Japan
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