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Strength improvement and purification of Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>-SiC nanocomposites by surface oxidation treatment [electronic resource].

Published
Washington, D.C. : United States. Office of the Assistant Secretary for Nuclear Energy, 2017.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
pages 3,122–3,131 : digital, PDF file
Additional Creators
Idaho National Laboratory, United States. Office of the Assistant Secretary for Nuclear Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
A two-step processing was developed to prepare Yb2Si2O7-SiC nanocomposites. Yb2Si2O7-Yb2SiO5-SiC composites were first fabricated by a solid state reaction/hot-pressing method. The composites were then annealed at 1250°C in air for 2 h to activate the oxidation of SiC, which effectively transformed the Yb2SiO5 into Yb2Si2O7. The surface cracks purposely induced can be fully healed during the oxidation treatment. The treated composites have improved flexural strength compared to their pristine composites. As a result, the mechanism for crack-healing and silicate transformation have been proposed and discussed in detail.
Report Numbers
E 1.99:inl/jou--16-40688
inl/jou--16-40688
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Note
Published through SciTech Connect.
04/03/2017.
"inl/jou--16-40688"
Journal of the American Ceramic Society 100 7 ISSN 0002-7820 AM
Son T. Nguyen; Tadachika Nakayama; Hisayuki Suematsu; Tsuneo Suzuki; Lingfeng He; Hong-Baek Cho; Koichi Niihara.
Funding Information
AC07-05ID14517
View MARC record | catkey: 24056819