Influence of Sulfate Ion on Phase and Dispersion of Y₃Al₅O₁₂ Nanopowders with the Co-Crystallization Method

Abstract:

Yttrium aluminum garnet Y₃Al₅O₁₂ (YAG) nanopowders were synthesized from co-crystallized precursors of Y₂(SO₄)₃, Al(NO₃)₃-Al₂(SO₄)₃ and Y(NO₃)₃ with a three-layer core-shell structure. X-ray diffraction (XRD) pattern indicated that too much was detrimental to the synthesis of pure phase YAG because of the serious separation between Y₂(SO₄)₃ and Al(NO₃)₃-Al₂(SO₄)₃. Transmission electron microscopy (TEM) revealed that was beneficial for the dispersion of the powders owing to the high decomposition temperature of . The powders with the n()/n(Y³⁺) mole ratio of 1.5/3 calcined at 1050°C showed good sintering activity.

• Periodical: Solid State Phenomena (Volume 281)
• Pages: 3-8
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.281.3
• Online since: August 2018
• Authors: Meng Meng Hao, Zi Qing Zeng, Gui Fen Fan*, Xiao Hong Wang, Wen Zhong Lu, Fei Liang
• Keywords: Co-Crystallize, Dispersion, Phase, YAG Powder

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