State Key Laboratory for Mechanical Behavior of Materials;
School of Materials Science and Engineering;
Xi'an Jiaotong University;
Xi'an 710049;
China;
School of Materials Science and Engineering;
Chang'an University;
Xi'an 710064;
China;
Institute of Publication Science;
Chang'an University;
Xi'an 710064;
China;
AECC Beijing Institute of Aeronautical Material;
Beijing 100095;
China;
Thermal barrier coatings; Aspect ratio; Bimodal microstructure; Thermal conductivity; Co-spray process;