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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Fabrication of Nanocrystalline YAG Transparent Ceramics by a Co-Precipitation Method
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 402-405)
Author(s): Gui-su Wang, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, China
Xia Li, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, China
Abstract: Yttrium aluminum garnet (YAG) polycrystalline powders have been prepared by a simple co-precipitation method with ammonia hydrogen carbonate as precipitant agent. Thermal analysis, FTIR, XRD and SEM have been used to characterize the phase transition and morphology of the synthesized powders. The results indicated that pure phase YAG powders were synthesized at 1000 ℃ for 2 h, and the obtained powders showed good dispersion with the particle sizes less than 100 nm. With the prepared YAG powders dry pressed, transparent YAG ceramics can be obtained by sintering at 1750 ℃ for 5 h under vacuum.
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