25 May 2011 Sub-micron grained highly transparent sesquioxide ceramics: synthesis, processing, and properties
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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.
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J. Ballato, J. Ballato, K. Serivalsatit, 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); doi: 10.1117/12.885238; https://doi.org/10.1117/12.885238
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