Process optimization for enhancing the strength properties of celadon body with spherical α-Al2O3 powder
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Longquan celadon, a highly esteemed traditional Chinese ceramic, faces considerable challenges in adapting to moderndemands due to its intrinsic brittleness. This study investigates the incorporation of spherical α-Al2O3 powder as a reinforcingagent aimed at enhancing the mechanical properties of celadon bodies.By optimizing parameters such as particle size, additivequantity, median diameter of the body material, and firing temperature, a composite material was formulated consisting of17% 10 μm α-Al2O3 with a median diameter (D50) of 2.957 μm. Upon firing at 1310 ℃, the modified body demonstrated anaverage 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 mullitecolumns at quartz interfaces. The findings indicate that meticulously calibrated ratios of toughening agents and preciseprocess controls can significantly elevate the performance characteristics of Longquan celadon, making it more suitable formodern industrial applications as well as everyday use.
Abstract
Longquan celadon, a highly esteemed traditional Chinese ceramic, faces considerable challenges in adapting to moderndemands due to its intrinsic brittleness. This study investigates the incorporation of spherical α-Al2O3 powder as a reinforcingagent aimed at enhancing the mechanical properties of celadon bodies.By optimizing parameters such as particle size, additivequantity, median diameter of the body material, and firing temperature, a composite material was formulated consisting of17% 10 μm α-Al2O3 with a median diameter (D50) of 2.957 μm. Upon firing at 1310 ℃, the modified body demonstrated anaverage 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 mullitecolumns at quartz interfaces. The findings indicate that meticulously calibrated ratios of toughening agents and preciseprocess controls can significantly elevate the performance characteristics of Longquan celadon, making it more suitable formodern industrial applications as well as everyday use.