Effect of the Synthesis Method on the Properties of Ultrafine YAG Powder

Abstract:

YAG materials has a number of unique properties, the application is very extensive. In this paper, the superfine YAG powder materials were prepared by co-precipitation method and hydrothermal precipitation method. The influence of synthesis process on the morphology of the powder was investigated. The results showed that the precursor powder prepared via the co-precipitation method is mainly from amorphous to crystalline transition with the increasing calcination temperature, the precursor agglomeration is more serious, In the process of increasing the calcination temperature, the dispersibility of the roasted powder is greatly improved, which is favorable for the growth of the crystal grains, so that the particle size of the powder is gradually increased, the YAG precursor prepared by the co-precipitation method is transformed into YAG crystals, the phase transition occurs mainly between 900 and 1100°C. When the molar ratio of salt to alkali is Y³⁺: OH^-=1: 8 via the hydrothermal reaction, the YAG particles with homogeneous morphology can be obtained. When the molar ratio of salt and alkali is increased continuously, the morphology of YAG particles is not obviously changed. The co-precipitation method is easy to control the particle size, the hydrothermal method is easy to control the particle morphology.

• Periodical: Solid State Phenomena (Volume 281)
• Pages: 40-45
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.281.40
• Online since: August 2018
• Authors: Jie Guang Song, Lin Chen, Cai Liang Pang, Jia Zhang, Xian Zhong Wang, Yue Liu, Xi Ling Zhang, Song Lin Guo, Ming Han Xu
• Keywords: Co-Precipitation Method, Hydrothermal Precipitation Method, Ultra-Fine Powder, YAG

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