Synthesis, microstructure and indentation Vickers hardness for (Y3Fe5O12)x/Cu0.5Tl0.5Ba2Ca2Cu3O10-δ composites

Abstract High-performance and low-cost composites are engineers’ dream for technological applications. To fulfill the material an engineering application, it is important to understand mechanical properties of material. The primary goal this research investigate impact nano-sized Yttrium iron garnet (Y 3 Fe 5 O 12 ) addition on microstructure polycrystalline Cu 0.5 Tl Ba 2 Ca 10- δ (CuTl-1223) superconductor. Co-precipitation solid-state reaction methods were utilized prepare Y nanoparticles superconductor, respectively. x /Cu nanoparticle/superconductor formed by adding small contents ( = 0.00, 0.02, 0.04, 0.06, 0.08, 0.10 wt%) CuTl-1223 matrix. volume fraction percentage main phase, CuTl-1223, was increased from 87.9 91.4% as adjusted 0.00 0.04 wt%. unit cell parameters a c remained unchanged following host CuTl-1223. porosity P %) decreased 39.1 29.4% Thus, has ability reduce weak links voids among superconducting grains. grain morphology prepared identified through scanning electron microscopy. different elemental compositions detected energy-dispersive X-ray measurements. Vickers microindentation hardness test employed study strength composites. Analysis modelling H v versus load F done various models. Meyer’s empirical law showed that all follow normal indentation size effect behaviour. Hays Kendall model clarified applied sufficient produce both elastic plastic deformation investigated samples. elastic/plastic indicated samples contain relaxation portion recovers after withdrawing load. proportional sample resistance modified models confirmed HK findings. Moreover, found be most suitable describing microhardness results Furthermore, modulus E ), yield fracture toughness K brittleness index B calculated function addition.