Sol-Gel Synthesis and Characterization of Ytterbium Silicate Powders

Author

Haiming Wen, Missouri University of Science and TechnologyFollow
Shaoming Dong
Ping He
Zhen Wang
Haijun Zhou
Xiangyu Zhang

Abstract

Ytterbium silicate (Yb₂SiO₅) is a promising environmental barrier coating material for SiC-based ceramic matrix composites. Yb₂SiO₅ powders were prepared by the sol-gel process using tetraethyl orthosilicate and ytterbium nitrate as starting materials. The Yb₂SiO₅ gel was characterized by Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis-differential scanning calorimetry (TGA-DSC). After calcining the gel at 1200°C for 1 h, Yb₂SiO₅ powders were obtained, which were examined by X-ray diffraction, FTIR, transmission electron microscope, and scanning electron microscope. The results showed that single-phase Yb₂SiO₅ powders of 200-300 nm in size were successfully synthesized.

Recommended Citation

H. Wen et al., "Sol-Gel Synthesis and Characterization of Ytterbium Silicate Powders," Journal of the American Ceramic Society, vol. 90, no. 12, pp. 4043 - 4046, Wiley-Blackwell, Dec 2007.

The definitive version is available at https://doi.org/10.1111/j.1551-2916.2007.02054.x

Department(s)

Materials Science and Engineering

International Standard Serial Number (ISSN)

0002-7820; 1551-2916

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2007 Wiley-Blackwell, All rights reserved.

Publication Date

01 Dec 2007