Sol-Gel Synthesis and Characterization of Ytterbium Silicate Powders
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.
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
Materials Science and Engineering
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