火焰喷涂合成TiC—Fe涂层的热力学分析

THERMODYNAMIC ANALYSIS OF FLAME SPRAY SYNTHESIS TiC-Fe CERMET COATINGS

火焰喷涂合成技术是自蔓延高温合成（ＳＨＳ）与氧乙炔火焰喷涂技术结合而发展起来的，已成功制备了 ＴｉＣ－Ｆｅ复合涂层利用计算相图技术，确定Ｆｅ－ Ｔｉ－Ｃ系的平衡相组成，并结合火焰喷涂合成工艺，重点讨论了原材料配比对体系熔化、凝固行为及涂层形成的影响。

Combining the flame spray technology, flame spray synthesis has been succeeded in obtaining TiC--Fe composite coatings as a new application of self--propagation high--temperature synthesis(SHS). In this paper, the equilibrium phases for Fe-Ti-C system were analyzed by CALPHAD method. The work was focused on the influence of the composition of starting materials on the melting and solidifying of the Fe-Ti--C system during flame spray synthesis process. The combustion synthesis mechanism of TiC--Fe cermet was also discussed.