The in-situ TiC/Ti₂Ni reinforced CrTi₄-based laser cladding composite coating was fabricated on Ti811 alloy. The phased composition and microstructure of the composite coating was studied, and the interface relationship between CeCrO₃ and Ti₂Ni was investigated in detail. The results show that the formation phases of the coating contain TiC, Ti₂Ni, CrTi₄, and CeCrO₃. The density functional theory (DFT) calculation suggests that the CeCrO₃$(12\overline{1})$//Ti₂Ni$(\overline{2}4\overline{2})$interface was stable with ionic bonds, and the charge transfer number at the interface was confirmed.

中文翻译：

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激光熔覆过程中原位 TiC/Ti2Ni 增强 CrTi4 基复合材料

在Ti811合金上制备了原位TiC/Ti ₂ Ni增强CrTi ₄基激光熔覆复合涂层。研究了复合涂层的相组成和显微组织，详细研究了CeCrO ₃与Ti ₂ Ni的界面关系。结果表明，涂​​层的形成相含有TiC、Ti ₂ Ni、CrTi ₄和CeCrO ₃。密度泛函理论 (DFT) 计算表明 CeCrO ₃$(12\overline{1})$//钛₂镍$(\overline{2}4\overline{2})$界面与离子键稳定，界面处的电荷转移数得到确认。