Development of Hot-Corrosion Resistant Zirconia Thermal Barrier Coatings

摘要

Thermal barrier coatings must be resistant to hot corrosion induced by moltensulfate/vanadate engine deposits in order to be widely useful in land and sea-based engines burning fuel of less than aviation quality. This paper describes some of the concepts and methodologies that have been invoked in the attempt to produce corrosion-resistant zirconia thermal barrier coatings. Among the major problems is a need to better understand the thermodynamics and mechanisms of the reaction of ceramic oxides with molten sulfate/vanadate oxysalts.