In order to obtain thermal barrier coatings by Suspension Plasma Spraying (SPS) process with potential new self-healing ability multicomponent submicronic Y-TZP/Al₂O₃/SiC suspensions were prepared. For this purpose, concentrated aqueous suspensions of individual components, as well as the multicomponent mixture were studied and characterised, in terms of colloidal stability and rheological behaviour to determine the best conditions for processing and preparation of the coatings. In the study, different dispersant contents and sonication times were tested. Subsequently, low concentrated suspensions were prepared to obtain preliminary thermal barrier coatings with the optimised feedstock. Thus, ceramic coatings were deposited by SPS and then characterised in order to assess the microstructure and phase distribution, in particular, the degree of preservation of the sealing agent, SiC, in the final coating as a previous indicator of its self-healing ability.

为了通过悬浮等离子喷涂（SPS）工艺获得具有潜在新的自修复能力的多组分亚微米Y-TZP / Al ₂ O ₃热障涂层制备了/ SiC悬浮液。为此，就胶体稳定性和流变行为方面，研究和表征了单个组分的浓缩水悬浮液以及多组分混合物，以确定了加工和制备涂层的最佳条件。在研究中，测试了不同的分散剂含量和超声处理时间。随后，制备低浓度的悬浮液以获得具有优化原料的初步热障涂层。因此，通过SPS沉积陶瓷涂层，然后对其进行表征，以评估其微观结构和相分布，尤其是最终涂层中密封剂SiC的保存程度，以此作为其自愈能力的先前指标。