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Synthesis of spherical yttrium aluminum garnet via a mixed solvothermal method

机译：混合溶剂热法合成球形钇铝石榴石

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Yttrium aluminium garnet (YAG) powders were synthesized by a mixed solvothermal method. The crystal structure of the YAG powders was characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). The impacts of the mixed solvents, the synthesis temperature and the polymer additive on the spherical grain formation and the crystal structure of the YAG has been researched by changing the synthetic conditions. The results show that spherical YAG powders were obtained using ethylenediamine-ethanol as mixed solvents with polyethylene glycol as additive at 220 degrees C for 20 h. Pure spherical YAG particles of 100-200 nm in diameter are formed directly in the process of mixed solvothermal reaction. The degree of crystallization and the crystal structure of the YAG phase have been improved with the increase of the synthesis temperature. The particles tend to be spherical and the distribution of particle size is homogeneous as expected. Finally, in this paper we investigated the formation mechanism of spherical YAG particles.
机译：采用混合溶剂热法合成了钇铝石榴石（YAG）粉末。通过透射电子显微镜（TEM），扫描电子显微镜（SEM），傅立叶变换红外光谱（FT-IR）和X射线衍射（XRD）表征了YAG粉末的晶体结构。通过改变合成条件，研究了混合溶剂，合成温度和聚合物添加剂对YAG球状颗粒形成和晶体结构的影响。结果表明，以乙二胺-乙醇为混合溶剂，以聚乙二醇为添加剂，在220℃，20 h下得到球形YAG粉末。在混合溶剂热反应过程中直接形成直径为100-200 nm的纯球形YAG颗粒。随着合成温度的升高，YAG相的结晶度和晶体结构得到了改善。颗粒倾向于是球形的，并且粒径分布是预期的均匀。最后，本文研究了球形YAG颗粒的形成机理。

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