A novel and cost-effective electrostatic spray-assisted vapor deposition (ESAVD) was used to deposit Y3Al5O12 (YAG) coatings. Polycrystalline single-phase Y3Al5O12 coatings were synthesized using the ESAVD method in an open atmosphere at 650 degrees C, and then annealed at 700 degrees-900 degrees C for 1 h. The ESAVD process involves the decomposition and chemical reactions of charged aerosol in vapor phase. The low-temperature coating deposition characteristics of the ESAVD process using a suitable sol precursor decreases the reaction and crystallization temperatures for forming Y3Al5O12 coatings. The microstructure of the Y3Al5O12 coating prepared using the ESAVD method is columnar and such strain-resistance microstructure could be useful for thermal barrier coating applications.