Superconducting and mechanical properties of the bulk Si(pb)SCCO system prepared via solid state and ammonium nitrate precipitation methods

We have investigated the effect of preparation method on superconducting and mechanical properties of Bi(Pb)-2223 bulk samples using Bi185Pb0.35Sr2Ca2Cu3O10 (+/-) (y) stoichiometry. Solid-state reaction and ammonium nitrate precipitation methods have been used for fabrication of the bulk samples. In addition, the effect of annealing time on BSCCO samples have been studied. Structural, electrical, magnetic and microhardness analyses of samples are performed by the X-ray powder diffraction (XRD), the Scanning Electron Microscopy (SEM), DC resistivity, AC susceptibility and Vickers microhardness Lest. The critical transition temperature, phase purity, surface morphology and crystallinity of the prepared bulk samples are compared with each other. Elasticity (E), brittleness (B-i, fracture toughness (K-IC) and yield strength (Y) values are also determined according to annealing time, applied load and production parameters or materials. (C) 2015 Elsevier EN. All rights reserved.