Fabrication and Characterization of Yttrium Lanthanum Oxide Transparent Ceramics Using Powders Prepared by Different Methods

Abstract:

Yttrium Lanthanum Oxide transparent ceramics were fabricated with (Y_0.9La_0.1)₂O₃ powders prepared by different methods. The growth characteristics, physical and chemical properties of the powders were investigated. The wet-chemical composite powders’ particle size was inhibited by La₂O₃ at high temperature treatment, therefore smaller than that of powders by solid-state reaction method. During the solid-state reaction between La₂O₃ and Y₂O₃ at temperature of 700~1100°C, La₂O₃ may have not effectively hindered the particle growth of Y₂O₃. (Y_0.90La_0.10)₂O₃ ceramic fabricated by both powders own smaller grain size and lower porosity than Y₂O₃ ceramics. The transmittance and sintering performance of Y₂O₃ ceramics were also improved after adding of La₂O₃. The powders prepared by both methods could be used to make high transparency ceramics.

• Periodical: Advanced Materials Research (Volumes 299-300)
• Pages: 588-591
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.299-300.588
• Online since: July 2011
• Authors: Yun Han Li, Qiu Hong Yang, Shen Zhou Lu
• Keywords: Grain Growth, Microstructure, Transparent Ceramic, Yttrium Lanthanum Oxide

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