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Meeting MS&T22: Materials Science & Technology
Symposium 14th Symposium on Green and Sustainable Technologies for Materials Manufacturing and Processing
Presentation Title Rapid Fabrication of SiC Composites by Selective Laser Sintering and Direct Liquid Silicon Infiltration
Author(s) Jie Yin, Xuejian Liu, Zhengren Huang
On-Site Speaker (Planned) Jie Yin
Abstract Scope In this work, a novel strategy for fabricating SiC composites via selective laser sintering (SLS) of carbon fiber combined with liquid silicon infiltration is reported. The SLS-powder composed of chopped carbon fiber (Cf) and phenolic resin (PR) mixed powder, in addition to a Cf/PR green body with a tailored microstructure was obtained by SLS. The printed green body with a low PR content (25vol%) is found to exhibit high printing stability and excellent strength. Finally, high-performance SiC composites are prepared via the liquid silicon infiltration, the density, flexural strength, elastic modulus, and fracture toughness being 2.719±0.008 g/cm3, 266±5 MPa, 248±3 GPa, and 2.87±0.07 MPam1/2, respectively. This strategy demonstrates an efficient approach to near-net shape high performance SiC composites with a designable complex structure.

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L-2: A Review on the Utilization of Fly Ash
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