Abstract
Superconducting samples of type (nano-Ag) x Cu0.5Tl0.5Ba2Ca2Cu3O10−δ , x=0.0,0.5,1.0,1.5,2.0, and 3.0 wt.% of the total sample’s mass were prepared by a single step solid-state reaction technique. The prepared samples were characterized using X-ray powder diffraction (XRD) and a scanning electron microscope (SEM). The electrical properties of the prepared samples were investigated using the electrical resistivity and I–V measurements. The Vickers microhardness (H v ) was measured at different applied loads (0.25–3.0 N) for studying the mechanical performance of the prepared samples. All prepared samples exhibited normal indentation size effect (normal ISE) and the H v number was load dependent. H v number increases as nano-Ag addition increased. The experimental data of H v was analyzed using different models; Mayer’s law, Hays–Kendall (H–K) approach, elastic/plastic deformation (EPD) model, proportional specimen resistance (PSR) model, and indentation induced cracking (IIC) model. In addition, the true microhardness (H o ) values were evaluated through different models. The obtained data has good agreement with the PSR model. Also, Young’s modulus (E), yield strength (Y), fracture toughness (K f ), and brittle index (B i ) were calculated.
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Acknowledgements
The authors of the present study wish to express their thanks to the superconductivity and metallic glass lab, Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt, for aiding with the experimental procedures.
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Abdeen, W., Mohammed, N.H., Awad, R. et al. Influence of Nano-Ag Addition on the Mechanical Properties of (Cu0.5Tl0.5)-1223 Superconducting Phase. J Supercond Nov Magn 26, 3235–3245 (2013). https://doi.org/10.1007/s10948-013-2192-6
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DOI: https://doi.org/10.1007/s10948-013-2192-6
Keywords
- Nano-Ag
- (Cu0.5Tl0.5)-1223
- Vickers microhardness