Nanostructured YAG and Er:YAG Powders Synthesized via Glycine-Nitrate Technique for Optically Transparent Ceramics

• Published in: Combustion science and technology Vol. 193; no. 1; pp. 126 - 141
• Main Authors: Zhukov, A.V., Chizhevskaya, S.V., Panov, V.A.
• Format: Journal Article
• Language: English
• Published: New York Taylor & Francis 02-01-2021; Taylor & Francis Ltd
• Subjects: Aluminum oxide; Ceramic powders; Ceramics; Erbium; Glycine; glycine/nitrate ratio; Heat treatment; Nanostructure; Nitrates; Precursors; Scandium oxides; Sintering (powder metallurgy); Solution combustion synthesis; Synthesis; transparent ceramics; X-ray diffraction; YAG; Yttrium; Yttrium oxide; Yttrium-aluminum garnet
• ISSN: 0010-2202; 1563-521X
• DOI: 10.1080/00102202.2019.1654463

Nanostructured precursors of yttria-alumina garnet powders have been synthesized using the glycine-nitrate technique. It was shown that the main characteristics of the powders are determined by the glycine/nitrate (G/N) molar ratio in the initial solution and the temperature of the heat treatment of the precursors. The maximum specific surface area of the powders was obtained for the G/N ratio of 0.4. Subsequently, the powders were subjected to mechanical treatment and sintering. The effects of the treatment conditions and the amount of the sintering additive (Sc
2
O
3
) on the properties of the resulting ceramics were studied using erbium-yttrium garnet (Er
1,5
Y
1,5
Al
5
O
12
) as an example. Ceramics with a transparency of approximately 70% were obtained at 1790°С.