Thermal shock behavior of nanostructured and microstructured thermal barrier coatings on a Fe-based alloy

► Nano-structured TBCs is potential for depositing on Fe-based alloys. ► Thermal shock resistant of nano-structured TBCs is better than traditional TBCs. ► Failure of microstructured TBCs is that TBC separates from substrate. ► Failure of nanostructured TBCs is that local TBC spalls.