Longquan celadon, a highly esteemed traditional Chinese ceramic, faces considerable challenges in adapting to modern demands due to its intrinsic brittleness. This study investigates the incorporation of spherical α-Al₂O₃ powder as a reinforcing agent aimed at enhancing the mechanical properties of celadon bodies.By optimizing parameters such as particle size, additive quantity, median diameter of the body material, and firing temperature, a composite material was formulated consisting of 17% 10 μm α-Al₂O₃ with a median diameter (D50) of 2.957 μm. Upon firing at 1310 ℃, the modified body demonstrated an average flexural strength of 126.9 MPa, reflecting an impressive improvement of 134% compared to the unoptimized body.Microstructural analyses conducted through Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), and X-Ray Diffraction (XRD) revealed a network-like distribution of fine corundum grains alongside elongated mullite columns at quartz interfaces. The findings indicate that meticulously calibrated ratios of toughening agents and precise process controls can significantly elevate the performance characteristics of Longquan celadon, making it more suitable for modern industrial applications as well as everyday use.

Keywords: Longquan celadon, α-Al₂O₃ powder, Mechanical properties enhancement, High-temperature firing, Microstructural analysis.