High-temperature oxidation behavior of plasma-sprayed ZrO 2 modified La-Mo-Si composite coatings

Plasma-sprayed ZrO2-modified LaB6-MoSi2 coating (ZLM) was firstly fabricated on SiC pre-coated carbon/carbon (C/C) composites to obtain an improved oxidation resistance at 1773 K involving long-term oxidation and short-term cyclic oxidation in an atmospheric environment. A crack-free structure in ZLM coating has been established with interlocking adhesion between the layers of coating. It is shown that the specimen with ZLM coating exhibits...