Аннотация:Abstract In this work, pure yttrium aluminum garnet was obtained by the partial chemical method at the low temperature. In this approach, alpha‐alumina nanoparticle, yttrium nitrate, urea, and tetraethyl orthosilicate ( TEOS ) were used as Al 3+ , Y 3+ , precipitation agent, and both dispersant and phase formation assistant agents, respectively. The results showed that TEOS molecules as a dispersant agent caused the less agglomeration of the alumina‐yttria core‐shell structure with a diameter of 200‐300 nm, as compared to particles obtained without using TEOS molecules. Furthermore, by using 0.5 and 1 wt% of TEOS , the YAG formation temperature was decreased from 1400°C to 1200°C through the liquid‐phase diffusion mechanism. Thus, in this case, the TEOS molecules acted as phase formation assistant agent for the constitution of YAG phases.
