High-temperature performance of silica ceramic cores with additives prepared by stereolithography 3D printing

• Optimal sintering at 1,200 °C yields ceramic cores with excellent high-temperature performance: flexural strength of 32.15 MPa at 1,500 °C and minimal deflection of 0.15 mm. • The addition of nano-3YSZ and micron Y2O3 promotes the formation of cristobalite and ZrSiO4, enhancing creep resistance and high-temperature strength. • Increasing sintering temperature improves room-temperature flexural strength and shrinkage but reduces open porosity and high-temperature deflection. • Stereolithography 3D printing enables fabrication of complex-shaped ceramic cores without molds, offering a promising route for advanced hollow turbine blades.