Simultaneous manipulations of thermal expansion and conductivity in symbiotic ScTaO ₄/SmTaO ₄ composites via multiscale effects

Effective manipulations of thermal expansion and conductivity are significant for improving operational performances protective coatings, thermoeletrics, radiators. This work uncovers determinant mechanisms symbiotic ScTaO4/SmTaO4 composites as thermal/environmental barrier coatings (T/EBCs), we consider effects interface stress resistance. The weak bonding among grains manipulate coefficient (CTE) stretching from 6.4 to 10.7×10-6 K-1 at 1300 ºC, which gets close that substrates in T/EBC systems. multiscale effects, including phonon scattering interface, mitigation speed, lattice point defects, synergistically depress transports, estimate the proportions different parts. resistance reduces by depressing speed phonons because differential acoustic properties between ScTaO4 SmTaO4 ceramics composites. study proves CTE tantalates can be artificially regulated match expand their applications, uncovered used transports various materials.