Study on mechanical properties of minimal surface Al2O3/Al composite structures prepared by photocuring

doi:10.19936/j.cnki.2096-8000.20251228.005

Abstract

Abstract: In this paper, the minimal surface Gyroid structure ceramic skeleton with volume fraction of 30% was prepared by stereo lithography apparatus (SLA) additive manufacturing, and the interpenetrating Al₂O₃/Al composite was prepared by metal infiltration. The compressive properties of the Gyroid surface Al₂O₃/Al interpenetrating composites were compared with those of the honeycomb Al₂O₃/Al interpenetrating composites. The fracture cross sections of the composites were observed by scanning electron microscopy (SEM), and the compressive failure mechanism of the composites was analyzed. The experimental results show that the compressive failure of the two structural composites mainly occurs at the joint position of the ceramic skeleton and the ceramic-metal interface, and the overall shear angle is 45°. The Gyroid curved structural composite has higher strength and ductility than the honeycomb structural composite due to its smooth and regular topological structure resulting in lower local stress concentration. The ultimate compressive strength of the Gyroid curved structural composite is 236 MPa, which is 3.4 times that of the honeycomb structure.

Key words: light curing 3D printing, minimal curved surface structure, composite material, compressibility

CLC Number:

TB332

YANG Xiuli, XU Lei, GUO Ziwei. Study on mechanical properties of minimal surface Al₂O₃/Al composite structures prepared by photocuring[J]. COMPOSITES SCIENCE AND ENGINEERING, 2025, 0(12): 37-41.

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Study on mechanical properties of minimal surface Al₂O₃/Al composite structures prepared by photocuring

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