Air plasma sprayed (APS) 7weight percent yttria stabilized zirconia (7YSZ) typical thermal barrier coatings are commonly used in aero engine components to protect against thermal fatigue, corrosion, erosion, corrosion-erosion and oxidation phenomenon. In spite of extensive industrial application of 7YSZ coatings, very few works are there on erosion wear performance and its mechanisms on these coatings. In the present work, comparative inspection of the erosion wear behaviors of air plasma sprayed 7YSZ thermal barrier coatings and dip-coated sol-gel processed 7YSZ thermal barrier coatings are carried out. For the sake of comparison erosion of uncoated Inconel 800 superalloys substrate was also studied. Erosion tests were conducted on air jet erosion conditions with alumina erodent materials and process parameters determined as per Taguchi design of experiments at room and high temperature of 850°C. Erosion wear resistance of non-conventional dip-coating of sol-gel derived 7YSZTBC was found better in comparison to conventional APS YSZ coatings.

空气等离子喷涂 (APS) 7wt% 氧化钇稳定氧化锆 (7YSZ) 典型的热障涂层通常用于航空发动机部件，以防止热疲劳、腐蚀、侵蚀、腐蚀侵蚀和氧化现象。尽管 7YSZ 涂层在工业上有广泛的应用，但关于这些涂层的侵蚀磨损性能及其机理的研究很少。在目前的工作中，对空气等离子喷涂 7YSZ 热障涂层和浸涂溶胶-凝胶处理的 7YSZ 热障涂层的冲蚀磨损行为进行了比较检查。为了比较未涂层的 Inconel 800 高温合金基材的侵蚀，也进行了研究。侵蚀测试是在空气喷射侵蚀条件下进行的，氧化铝侵蚀材料和工艺参数根据田口实验设计确定，在室温和 850°C 的高温下进行。与传统的 APS YSZ 涂层相比，发现溶胶-凝胶衍生的 7YSZTBC 的非常规浸渍涂层的耐腐蚀性能更好。