Abstract—

An approach is proposed which makes it possible to lower the silicon melt infiltration temperature in the fabrication of silicon carbide/zirconium diboride matrix ceramic composites via the formation of a silicon–yttrium low-temperature eutectic. Using thermodynamic calculations, we have substantiated the addition of yttrium to a siliciding agent and demonstrated its advantages. Silicon melt infiltration into composites has been carried out for the first time at a temperature below the melting point of silicon, which has ensured a decrease in the degree of carbon fiber degradation, while allowing the matrix to retain high density and uniformity.

中文翻译：

---

钇对碳纤维增强 ZrB2-SiC 复合材料性能的影响

摘要-

提出了一种通过形成硅钇低温共晶物来降低碳化硅/二硼化锆基陶瓷复合材料制造过程中硅熔体渗透温度的方法。通过热力学计算，我们证实了在硅化剂中添加钇并证明了其优点。首次在低于硅熔点的温度下进行硅熔体渗透到复合材料中，这确保了碳纤维降解程度的降低，同时使基体保持高密度和均匀性。