期刊
SCRIPTA MATERIALIA
卷 64, 期 12, 页码 1095-1097出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.02.029
关键词
Oxides; Vacancy; Nanocomposite; Optical transmission; Spark plasma sintering
类别
资金
- US Office of Naval Research [N00014-06-1-0184]
- Office of Naval Research [N00014-07-1-0745]
A fully dense Y2O3-MgO nanocomposite with a grain size below 100 nm was successfully sintered using a sol gel-processed nanopowder with a grain size below 30 nm. The nanocomposite has an excellent transmission (similar to 80%) in the infrared range. The nanocomposite is highly sensitive to the annealing environment in air or vacuum. The optical transmission is reversible by changing the annealing atmosphere from vacuum to air. Based on this combined with X-ray diffraction analysis, it is reasoned that oxygen vacancy is responsible for the optical properties of the composite. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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