研究目的
To ?nd e?cient ways to improve the performance of SiC/Si composites prepared by SLS/RB technologies.
研究成果
The study demonstrated that combining SLS and RB methods with the addition of graphite as a slow-release carbon source significantly improves the performance of SiC/Si composites. The two-step sintering method further reduced the residual silicon content and increased the ?exural strength at high temperatures.
研究不足
The study focused on improving the performance of SiC/Si composites but did not address the potential for scaling up the process for industrial applications or the cost implications of the materials and methods used.
1：Experimental Design and Method Selection:
The study combined reaction-bonded (RB) process and selective laser sintering (SLS) method to prepare ceramic components with complex shapes.
2：Sample Selection and Data Sources:
Starting materials included silicon carbide powder, spheroidal-graphite, and coarse silicon particles.
3：List of Experimental Equipment and Materials:
Ceramic three-dimensional (3D) printer (Farsoon SLS eform, China) was used for fabrication.
4：Experimental Procedures and Operational Workflow:
The preforms were debinded and then in?ltrated with molten silicon at 1600 °C.
5：Data Analysis Methods:
SEM and optical microscope were used to observe the microstructures, and XRD was used to analyze the phase composition.
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