As the number of aircraft that park in ocean environments increases, the corrosion of coatings used in their engines becomes inevitable. Previous studies have focussed on the abradability of as-sprayed seal coatings in high-speed rubbing tests with a blade. This study deals with the investigation of the effect of corrosion on the abradability of seal coatings. It uses metallographic analysis and hardness, bonding strength and high-speed rubbing tests conducted on as-sprayed and corroded Al-hBN coatings. The results have shown the appearance of additional pores in the corroded coatings and a decrease in the coating mechanical properties. Compared with the as-sprayed coatings, the corroded coatings caused an increase in blade wear and severe overheating of the blade tip during the high-speed rubbing test when the rubbing speed and single-pass depth were high. The unfavourable thermal properties of the corroded coatings were considered as the probable reason for these results.

中文翻译：

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航空发动机密封涂层腐蚀对其高速磨损行为的影响

随着停在海洋环境中的飞机数量增加，发动机中使用的涂层腐蚀变得不可避免。以前的研究集中在用刀片进行高速摩擦试验中喷涂密封涂层的耐磨性。本研究涉及腐蚀对密封涂层耐磨性影响的调查。它使用对喷涂和腐蚀的 Al-hBN 涂层进行金相分析和硬度、结合强度和高速摩擦测试。结果表明，在腐蚀的涂层中出现了额外的孔隙，并且涂层的机械性能下降。与喷涂后的涂层相比，在高速摩擦试验中，当摩擦速度和单程深度较高时，腐蚀的涂层导致叶片磨损增加和叶片尖端严重过热。腐蚀涂层的不利热性能被认为是这些结果的可能原因。