Metal-based thermal barrier coatings (MBTBCs) have been produced, using Induction plasma spraying (IPS) of nanostructured alloy powders. Important advances have been made over recent years to ceramic-based thermal barrier coatings (TBCs) for internal combustion engines application, but they are not yet applied in mass production situations. Besides the important economic considerations, the reliability of ceramic TBCs is also an issue, due to the difficulty of predicting "in-service" lifetime. Through engineering of the nano/amorphous structure of MBTBCs, their thermal conductivity can be...