Theoretical Research on the Fabrication of Porous Tantalum Carbide Materials for Silicon Carbide Crystal Growth
This study aims to develop a theoretical model based on laser powder bed fusion(PBF-LB/M)technology for the fabrication of porous tantalum carbide(TaC)materials used in silicon carbide crystal growth.The goal is to fabricate porous TaC discs with a porosity of approximately 50%,an average pore size of 40 μm,a thickness of 2 mm,and a diameter of 300 mm.By conducting thermal field simulations and microstructure modeling,we optimize the process parameters and predict the mechanical and thermophysical properties of the material.The results indicate that the PBF-LB/M process can effectively control the pore structure and performance of porous TaC,providing a theoretical basis for its practical application.Through finite element analysis and simulation studies,we have identified the optimal laser power,scanning speed,and layer thickness parameters.These optimized parameters not only achieve uniform thermal field distribution but also meet the target porosity and pore size requirements.Ultimately,this study lays a solid theoretical foundation for the industrial application of porous TaC materials and provides detailed guidance for further experimental validation.
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维普
