ABSTRACT This study investigated three different milling sequences of high-energy ball milling for in-situ synthesis of Ti2SC MAX phase by Ti, FeS2 and C. The ball milling sequences involved: 1–10-h ball milling of the primary powders, 2–5-h ball milling of Ti and FeS2 followed by 5-h ball milling of added C powder; and 3–5-h ball milling of FeS2 followed by 5-h ball milling of added Ti and C. Heat treatment at 1000°C under Ar atmosphere after ball milling led to complete reactions and increased the purity of Ti2SC. Results also showed that the synthesis based on method 2 was more suitable as it resulted in the formation of Ti2SC and TiC. The spark plasma sintering (SPS) led to a dense bulk sample. The characteristic layered structure of the Ti2SC MAX was further analysed by scanning electron microscopy.

中文翻译：

---

球磨顺序对 Ti2SC MAX 相原位反应合成的影响

摘要 本研究调查了用于由 Ti、FeS2 和 C 原位合成 Ti2SC MAX 相的高能球磨的三种不同球磨顺序。球磨顺序包括：初级粉末的 1-10 小时球磨，2- Ti 和 FeS2 球磨 5 小时，然后加入 C 粉球磨 5 小时；FeS2 球磨 3-5 小时，然后加入 Ti 和 C 球磨 5 小时。球磨后在 Ar 气氛下在 1000°C 下进行热处理，导致反应完全并提高 Ti2SC 的纯度。结果还表明，基于方法 2 的合成更适合，因为它导致 Ti2SC 和 TiC 的形成。放电等离子体烧结 (SPS) 产生致密的大块样品。通过扫描电子显微镜进一步分析了 Ti2SC MAX 的特征层状结构。