caa a22 4500 445379979 CHVBK 20180317143014.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10948-011-1150-4 doi (NATIONALLICENCE)springer-10.1007/s10948-011-1150-4 Mechanical Properties of (Cu0.5Tl0.5)-1223 Substituted by Pr [Elektronische Daten] [R. Awad, A. AbouAly, M. Kamal, M. Anas] Cu0.5Tl0.5Ba2Ca2−x Pr x Cu3O10−δ superconducting samples, with 0≤x≤0.15, were prepared by a single-step solid state reaction on a form of rectangular bar. The prepared samples were characterized using X-ray powder diffraction (XRD) and scanning electron microscope (SEM). The room temperature Vickers microhardness was measured at different loads (0.25-3 N). The experimental results were analyzed using Meyer's law, Hays-Kendall approach, elastic/plastic deformation model, proportional specimen resistance model, and the indentation-induced cracking (IIC) model. Surprising results were obtained and showed that all samples in the form of rectangular bars exhibited reverse indentation size effect in contrary with those in the form of discs. Vickers microhardness values were decreased as Pr-content increased that consisting with the porosity results. Furthermore, the Young's modulus was determined using the dynamic resonance technique. A relation between Young's modulus (E) and Vickers microhardness (H V) was obtained. Springer Science+Business Media, LLC, 2011 (Cu0.5Tl0.5)-1223 nationallicence Vickers microhardness nationallicence Young's modulus nationallicence Pr-substitution nationallicence Awad R. Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt aut AbouAly A. Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt aut Kamal M. Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt aut Anas M. Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/6(2011-08-01), 1947-1956 1557-1939 24:6<1947 2011 24 10948 https://doi.org/10.1007/s10948-011-1150-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-011-1150-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Awad R. Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt aut NATIONALLICENCE 700 1- AbouAly A. Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt aut NATIONALLICENCE 700 1- Kamal M. Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt aut NATIONALLICENCE 700 1- Anas M. Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/6(2011-08-01), 1947-1956 1557-1939 24:6<1947 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer