Thermal and Mechanical Investigations of (Bi,Pb)-2212 superconductor

What is it about?

The employment of superconducting materials in applications like energy storage, rotating machines, magnets for plasma confinement and electrical transmission lines induces great mechanical forces on these devices. Therefore, it is crucial to comprehend these materials’ mechanical properties and to improve them to use them effectively in engineering applications. This study's main objective is to examine the effects of different nano-sized CdO, Cd0.95Mn0.05O, and Cd0.95Fe0.05O inclusions on the microstructure and mechanical properties of the polycrystalline Bi1.6Pb0.4Sr1.9Ca1.1Cu2.1Oy((Bi, Pb)-2212). The classical solid-state reaction technique was used to synthesize the nano-(CdO)x /Bi1.6Pb0.4Sr1.9Ca1.1Cu2.1Oy,, nano-(Cd0.95Mn0.05O)x/Bi1.6Pb0.4Sr1.9Ca1.1Cu2.1Oy,,and nano-(Cd0.95Fe0.05O)x/Bi1.6Pb0.4Sr1.9Ca1.1Cu2.1Oy composites, with x = 0.00, 0.01, 0.02, 0.05, and 0.10 wt.%, respectively. X-ray diffraction (XRD) confirmed the formation of an orthorhombic structure of the (Bi,Pb)-2212 as the major phase.

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Why is it important?

Different models were theoretically used to analyse the measured HV data in the plateau limit regions. The indentation-induced cracking (IIC) model offered the most accurate theoretical model at the plateau limit region based on Vickers microhardness (HV) observations.

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