For the present study on Aerosol Deposition of MAX-phase materials, Ti₃SiC₂ was chosen as model system due to the availability of property data and commercial powder. The as-received powder was milled to different nominal sizes. For revealing details on coating formation and possible bonding mechanisms, Aerosol Deposition experiments were performed for different particle size batches and process gas pressures. Microstructural analyses reveal that coating formation preferably occurs for particle sizes smaller two microns. Using such small particle sizes, crack-free, dense layers can be obtained. The individual deposition efficiencies for the different particle sizes, particularly the critical size below which deposition gets prominent, vary with process gas flows and associated pressures. Detailed microstructural analyses of coatings by high-resolution scanning electron microscopy reveal plastic deformation and fracture, both attributing to shape adaption to previous spray layers and probably bonding. In correlation to coating thickness or deposition efficiencies, respective results give indications for possible bonding mechanisms and a tentative window of Aerosol Deposition for Ti₃SiC₂ MAX-phases as spray material.

对于目前研究的最大相材料，Ti ₃ SiC _2的气溶胶沉积由于获得了性能数据和商业粉末，我们选择了该模型作为模型系统。将收到的粉末研磨成不同的标称尺寸。为了揭示涂层形成和可能的粘结机理的详细信息，针对不同的粒度批次和工艺气体压力进行了气溶胶沉积实验。微观结构分析表明，涂层形成优选发生在粒径小于2微米的情况下。使用如此小的粒度，可以获得无裂纹的致密层。不同粒径（尤其是临界尺寸以下的单个沉积效率）随工艺气体流量和相关压力而变化，在该临界尺寸以下沉积变得突出。通过高分辨率扫描电子显微镜对涂层进行详细的微观结构分析，可发现塑性变形和断裂，两者都归因于对先前喷涂层的形状适应性以及可能的粘合。与涂层厚度或沉积效率相关，各自的结果给出了可能的粘结机理和Ti气溶胶沉积的暂定窗口的指示。_3个SiC ₂ MAX相作为喷涂材料。