Nanograined highly transparent yttria ceramics

Autor:	John Ballato, Karn Serivalsatit, B Yazgan Kokuoz, Basak Yazgan Kokuoz
Rok vydání:	2009
Předmět:	Materials science Transparent ceramics business.industry Sintering Laser Atomic and Molecular Physics and Optics Grain size law.invention Optics law visual_art visual_art.visual_art_medium Transmittance Ceramic business Refractive index Yttria-stabilized zirconia
Zdroj:	Optics Letters. 34:1033
ISSN:	1539-4794 0146-9592
DOI:	10.1364/ol.34.001033
Popis:	The field of transparent ceramics is enjoying a renaissance, as refractory oxides are being developed as alternatives to single crystals in high-performance laser systems. However, a significant challenge remains regarding the reduction of the grain size to sufficiently subwavelength dimensions in order to achieve the same degree of optical transparency as the single-crystal analog. Here we report transparent yttria (Y2O3) ceramics that were synthesized by a pressure-assisted, two-step, low-temperature sintering process with an average grain size of 300 nm. These nanograined ceramics exhibit equivalent transmission to single crystalline yttria for wavelengths greater than about 1200 nm. The single-crystal-like transmittance of the nanograined yttria ceramics in the visible and IR region is an important advancement for the use of these materials in more-extreme environments, including high-energy laser systems where reduction of scattering is paramount.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9766e24737ae29b6f96da0c74195640c https://doi.org/10.1364/ol.34.001033 Zobrazit plný text záznamu