Fabrication of (Nd_0.01La_XY_0.99−X)₂O₃ Nanoparticles and Transparent Ceramics by Combustion Synthesis

Authors: Luo, Jun-Ming; Deng, Li-Ping; Xu, Ji-Lin

Source: Journal of Nanoscience and Nanotechnology, Volume 11, Number 11, November 2011 , pp. 9705-9708(4)

Publisher: American Scientific Publishers

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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 (Nd_0.01La_xY_0.99−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 (Nd_0.01La_xY_0.99−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 (Nd_0.01La_xY_0.99−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; NANOPARTICLES; TRANSPARENT CERAMICS; COMBUSTION SYNTHESIS; TRANSMITTANCE

Document Type: Research article

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

Publication date: 2011-11-01

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