DTIC AD1049062: Thermal Property Engineering: Exploiting the pdf

DTIC AD1049062: Thermal Property Engineering: Exploiting the

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We developed dual-phase ceramic nanocomposites, as opposed to single-phase ceramics, as a potential laser gain material that could incorporate the low-maximum phonon energy necessary for efficient mid-infrared laser output with the high thermal conductivity needed for effective thermal management at high operating powers. Our materials were comprised of an undoped majority species (magnesium oxide) and a rare-earth doped minority species (erbium doped yttrium oxide). Nanocomposite powders were prepared using a novel co-precipitation method that allows for intimate mixing of the constituent species. The results of physical and optical characterization of the powders guided the synthesis parameters of subsequent batches toward optimal material conditions as defined by desired laser performance. Resultant powders went through various methods of densification followed by characterization to steer the parameters toward translucency

• Creator/s: Defense Technical Information Center
• Date: 3/1/2018
• Year: 2018
• Book Topics/Themes: DTIC Archive, Fleischman, Zackery, US Army Research Laboratory Aberdeen Proving Ground United States, thermal properties, ceramic materials, nanocomposites, lasers, oxides, xray diffraction, Scanning Electron Microscopes, Density, Transmission Electron Microscopy, Fluorescence, powders, sintering

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