Sub-micron grained highly transparent sesquioxide ceramics: synthesis, processing, and properties

J. Ballato; K. Serivalsatit

doi:10.1117/12.885238

25 May 2011 Sub-micron grained highly transparent sesquioxide ceramics: synthesis, processing, and properties

J. Ballato, K. Serivalsatit

Proceedings Volume 8039, Laser Technology for Defense and Security VII; 80390W (2011) https://doi.org/10.1117/12.885238
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

Transparent sesquioxide ceramics, e.g. Y₂O₃ and Sc₂O₃ are being developed as alternatives to yttrium aluminum garnet (YAG) for high-power solid-state laser systems. In this work, we present the synthesis of these sesquioxide nanopowders by precipitation techniques and the subsequent processing of these nanopowders into sub-micron transparent ceramics using a modifying two-step sintering approach. These transparent ceramics exhibited equivalent transparency to that of analogous single crystals. The microhardness and fracture toughness of the modified two-step sintered ceramic exceeded those of conventionally sintered ceramic by 25% and 70%, respectively.

Citation Download Citation

J. Ballato and K. Serivalsatit "Sub-micron grained highly transparent sesquioxide ceramics: synthesis, processing, and properties", Proc. SPIE 8039, Laser Technology for Defense and Security VII, 80390W (25 May 2011); https://doi.org/10.1117/12.885238

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