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Fabrication of (Nd0.01La X Y0.99−X )2O3 Nanoparticles and Transparent Ceramics by Combustion Synthesis

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Abstract:

Y2O3 acts as the matrix material when doped with different content of La2O3 for reducing sintering temperature and refining grains. The (Nd0.01La x Y0.99−x )2O3 nanoparticles and transparent ceramics are fabricated by a combustion synthesis. The powder feature is characterized by TEM. The microstructure, mechanical properties and transmittance of the samples are examined by SEM, HV-1000 hardness tester and fluorescence analyzer respectively. The results show that the (Nd0.01La x Y0.99−x )2O3 nanoparticles are homogeneous in size and nearly spherical with average diameter in the range of 40∼60 nm. There are no other phases except the Y2O3 cubic phase in the (Nd0.01La x Y0.99−x )2O3 nanoparticles. The grains of the samples significantly reduce with increasing La2O3 content. The hardness and fracture toughness increase rapidly first and then gradually tend to plateau with increasing La2O3 content. The transmittance of sample also increases gradually with increasing La2O3, the largest transmittance exceeds 77% when the La2O3 content is x = 0.12.

Keywords: (ND0.01LA XY099-X)2O3; COMBUSTION SYNTHESIS; NANOPARTICLES; TRANSMITTANCE; TRANSPARENT CERAMICS

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2011.5284

Publication date: November 1, 2011

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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