Synthesis, characterization and electrical properties of hybrid mono-iron-substituted undecatungstosilicate/(Bi,Pb)-2223 phase superconductors

Ghouch, Nour El; Al‐Oweini, Rami; Awad, R.

doi:10.1088/2053-1591/ab46e2

Mater. Res. Express

2019

DOI: 10.1088/2053-1591/ab46e2

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Synthesis, characterization and electrical properties of hybrid mono-iron-substituted undecatungstosilicate/(Bi,Pb)-2223 phase superconductors

Nour El Ghouch

Rami Al‐Oweini

R. Awad

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Cited by 10 publications

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References 77 publications

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“…The average crystallite size (D) of the synthesized nanoparticles was calculated using Debye -Scherrer equation(Al Boukhari et al, 2019;Ghouch et al, 2019): …”

mentioning

confidence: 99%

A Comprehensive Study on the Effect of ZnO and ZnAl2O4 Nanoparticles on the Mechanical Properties of Epoxy Coating: Tensile and Hardness

Shmait¹,

Ghouch²,

Boukhari³

et al. 2021

MAS

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ZnO and ZnAl2O4 nanoparticles (NPs) were successfully prepared by the co-precipitation method and characterized by x-ray powder diffraction, transmission electron microscopy, and Fourier transform infrared spectroscopy. The prepared NPs were incorporated into epoxy (EP) coating with mass ratios 200  800 mg/kg of ZnO NPs/EP and ZnAl2O4 NPs /EP. The prepared coatings were characterized by scanning electron microscopy and Fourier transform infrared spectroscopy, and their mechanical properties were investigated, at room temperature, after 5, 10, 15, and 20 days of preparation. Tensile tests showed an improvement in the tensile properties, with the best improvement in ultimate tensile strength (93.2%) for 800 mg/kg ZnAl2O4 NPs/EP coating after 15 days of preparation. The ZnO NPs/EP and ZnAl2O4 NPs/EP coatings exhibited noticeable sensitivity to the stretching rate. Vickers microhardness (Hv) investigations showed normal indentation size effect behavior for all the samples. The best improvement in Hv was attained after 5 days of preparation, for all coatings, with the best improvement (9.15%) for 700 mg/kg ZnO NPs/EP.

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“…The average crystallite size (D) of the synthesized nanoparticles was calculated using Debye -Scherrer equation(Al Boukhari et al, 2019;Ghouch et al, 2019): …”

mentioning

confidence: 99%

A Comprehensive Study on the Effect of ZnO and ZnAl2O4 Nanoparticles on the Mechanical Properties of Epoxy Coating: Tensile and Hardness

Shmait¹,

Ghouch²,

Boukhari³

et al. 2021

MAS

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Investigation of the physical properties of (Cu0.5Tl0.5)Ba2Ca2Cu3O10-δ impregnated with mono cobalt(II)-substituted Undecatungstosilicate Nanoparticles

et al. 2020

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Effect of hard magnetic ferrite (Ba0.5Sr0.5Fe12O19) nanoparticles on the mechanical properties of the (Bi, Pb)-2223 phase

et al. 2023

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To manifest the effect of hard magnetic Ba0.5Sr0.5Fe12O19 nanoparticles on the mechanical performance of the (Bi,Pb)-2223 superconducting phase, nano-(Ba0.5Sr0.5Fe12O19)x/Bi1.8Pb0.4Sr2Ca2Cu3.2O10+δ, with x = 0.00, 0.01, 0.02, 0.03, 0.04, 0.05, 0.10, and 0.20 wt%, were synthesized using a conventional solid-state reaction method. The X-ray diffraction (XRD) data revealed that adding nano-(Ba0.5Sr0.5Fe12O19) to the host (Bi,Pb)-2223 phase preserved the orthorhombic structure. The porosity (P%) calculations revealed a decrease until x = 0.04 wt%, which suggests that the addition of nano-(Ba0.5Sr0.5Fe12O19)x reduces the number of voids and improves inter-grain connections, as confirmed by SEM micrographs. The superconducting transition temperature (Tc) increased to 112 K with the inclusion of nano-(Ba0.5Sr0.5Fe12O19) up to x = 0.04 wt%. Vickers microhardness (HV) measurements were conducted at various applied loads (0.245–9.800 N) and a duration time of 45 s. The HV number increased with the addition of x up to x = 0.04 wt% but then decreased with further addition. Various models were employed for analysis and modelling of Vickers hardness (HV) versus test load (F), including Meyer’s law, Hays–Kendall (H–K) model, the elastic/plastic deformation (EPD) model, the proportional sample resistance (PSR) model, the modified proportional sample resistance (MPSR), and indentation-induced cracking (IIC) model. It was found that the PSR model was the most appropriate theoretical model for describing the microhardness of nano-(Ba0.5Sr0.5Fe12O19)x/(Bi,Pb)-2223 composites. Moreover, the elastic modulus (E), yield strength (Y), fracture toughness (K), brittleness index (B), and elastic stiffness coefficient (C11) were estimated as a function of the inclusion of nano-(Ba0.5Sr0.5Fe12O19)x. Furthermore, the indentation creep test (time-dependent Vickers microhardness) revealed that the dislocation creep mechanism exists in composite samples with low concentrations (x < 0.05 wt%), whereas the dislocation climbs creep mechanism was observed for x ≥ 0.05 wt%.

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Synthesis, characterization and electrical properties of hybrid mono-iron-substituted undecatungstosilicate/(Bi,Pb)-2223 phase superconductors

Cited by 10 publications

References 77 publications

A Comprehensive Study on the Effect of ZnO and ZnAl2O4 Nanoparticles on the Mechanical Properties of Epoxy Coating: Tensile and Hardness

A Comprehensive Study on the Effect of ZnO and ZnAl2O4 Nanoparticles on the Mechanical Properties of Epoxy Coating: Tensile and Hardness

Investigation of the physical properties of (Cu0.5Tl0.5)Ba2Ca2Cu3O10-δ impregnated with mono cobalt(II)-substituted Undecatungstosilicate Nanoparticles

Effect of hard magnetic ferrite (Ba0.5Sr0.5Fe12O19) nanoparticles on the mechanical properties of the (Bi, Pb)-2223 phase

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