Thermal barrier coating (TBC) degradation has been identified as a primary problem in the case of hot corrosion via Na₂SO₄–V₂O₅ deposits. In comparison with the current top coat thickness, the current research presents a novel TBC that combines equal amounts of pure alumina (Al₂O₃) and yttria-stabilized zirconia (YSZ) with improved resistance to heat corrosion. Using the atmospheric plasma spray (APS) process, Al₂O₃ and YSZ were sprayed as a bond coat on cast iron substrates using the multilayer bond coat materials Metco 410NS and Metco 452. Utilizing a cyclic method, the hot corrosion behaviour of TBC was examined at 850 °C using a corrosive salt consisting of 45 weight percent sodium sulphate (Na₂SO₄) and 55 weight percent vanadium pentoxide (V₂O₅) powders. In increments of 100 µm, the top coat thickness ranged from 100 to 300 µm. The results indicated that a 300 µm top coat thickness will result in a greater hot corrosion resistance. The disintegrate of the TBC systems is also caused by corrosive salts like Na₂SO₄ and V₂O₅, which have the ability to dissolve the stabilizers in the zirconia coating at high temperatures.

_{热障涂层 (TBC) 退化已被确定为 Na 2} SO ₄ –V ₂ O ₅沉积物热腐蚀情况下的主要问题。与目前的面漆厚度相比，当前的研究提出了一种新型TBC，它结合了等量的纯氧化铝（Al ₂ O ₃）和氧化钇稳定氧化锆（YSZ），具有更高的耐热腐蚀性。采用大气等离子喷涂 (APS) 工艺，使用多层粘结层材料 Metco 410NS 和 Metco 452 将 Al ₂ O ₃和 YSZ 作为粘结层喷涂在铸铁基材上。利用循环方法，研究了 TBC 的热腐蚀行为。使用由 45 重量％硫酸钠 (Na ₂ SO ₄ ) 和 55 重量％五氧化二钒 (V ₂ O ₅ ) 粉末组成的腐蚀性盐在 850 °C 下进行测试。以 100 µm 为增量，面漆厚度范围为 100 至 300 µm。结果表明，300 µm 的面漆厚度将带来更好的耐热腐蚀性。 TBC系统的分解也是由Na ₂ SO ₄和V ₂ O ₅等腐蚀性盐引起的，这些盐能够在高温下溶解氧化锆涂层中的稳定剂。