EXAMINATION OF VANADIUM EFFECT ON GENERAL MECHANICAL CHARACTERISTICS OF Bi-2223 MATERIALS VIA SEMI-EMPIRIC MODELS

Year 2020, Volume: 21 , 91 - 100, 27.11.2020

Uğur Soykan , Fidan Valiyeva , Gürcan Yıldırım

https://doi.org/10.18038/estubtda.818446

Cited By: 1

Abstract

In the current work, we semi-empirically investigate the load-independent Vickers hardness values of vanadium added Bi-2223 compounds in the plateau limit regions evaluated from the experimental microhardness graphics (Vickers hardness parameters versus applied indentation test loads) to determine the role of vanadium particles on the general mechanical characteristics with the aid of six mechanical modeling approaches, namely law of Meyer, proportional sample resistance, elastic/plastic deformation, modified proportional sample resistance, Hays-Kendall and indentation-induced cracking models. Throughout the study, the samples are prepared with the different molar rations varying from x=0 to 0.3 by the conventional ceramic method in the normal atmospheric pressure at the room temperature conditions. All the model findings show that the mechanical performances tend to constantly reduce with increasing the vanadium concentration level embedded in the Bi-2223 superconducting crystal system. This is in accordance to the fact that the concentration level of vanadium remarkably damages the main structural problems and permanent irreversible deformations. In this respect, it is not wrong to verify that the vanadium inclusions unstabilize the inherit durable tetragonal phase of Bi-2223 inorganic solids, resulting in the regression in the mechanical durability (resistance towards to the applied loads) in case of the applied test loads. Moreover, the models indicate that every material prepared exhibits the conventional indentation size effect (related to the formation of elastic and plastic deformations in the host crystal structures simultaneously due to the recovery of systems) but within the suppression trend. Shortly, all the semi-empiric models preferred in the present work are found to be useful descriptors to define the suitable relationship between the ion-addition mechanism in the crystal lattice and mechanical durability/performances of vanadium-added Bi-2223 materials. We should, of course, declare here that Hays–Kendall approach is gathered to be the best approach model for the load-independent Vickers hardness values in the plateau limit regions.

Keywords

Vanadium-added Bi-2223 material, Semi-empiric models, Mechanical durability, Plateau limit regions

Supporting Institution

This work was supported by Bolu Abant Izzet Baysal University, Department of Chemistry and Department of Mechanical Engineering.

Thanks

This work was supported by Bolu Abant Izzet Baysal University, Department of Chemistry and Department of Mechanical Engineering.

References

• [1] Wang FE. IV-Superconductivity, Bonding Theory for Metals and Alloys, 2005; 65-108.
• [2] Ulgen AT, Belenli I. Sintering time dependence of iron diffusion in MgB2 and its effect on superconducting properties, AIP Conference Proceedings, 2017; 1815: 040008.
• [3] Coombs TA, A finite element model of magnetization of superconducting bulks using a solid-state flux pump, IEEE T. Appl. Supercond., 2011; 21: 3581–3586.
• [4] Runde M, Application of high-Tc superconductors in aluminum electrolysis plants, IEEE T. Appl. Supercond., 1995; 5: 813–816.
• [5] Ulgen AT, Belenli I. The Effect of Fe Diffusion on some physical and superconducting properties of MgB2, J. Supercond. Nov. Magn., 2017; 30: 1089–1095.
• [6] Xu HH, Cheng L, Yan SB, Yu DJ, Guo LS, Yao X. Recycling failed bulk YBCO superconductors using the NdBCO/YBCO/MgO film-seeded top-seeded melt growth method, J. Appl. Phys., 2012; 111: 103910.
• [7] Guner SB, Zalaoglu Y, Turgay T, Ozyurt O, Ulgen AT, Dogruer M, Yildirim G. A detailed research for determination of Bi/Ga partial substitution effect in Bi-2212 superconducting matrix on crucial characteristic features, J. Alloy. Compd., 2019; 722: 388–398.
• [8] Nagaya S, Hirano N, Naruse M, Watanabe T, Tamada T. Development of a high-efficiency conduction cooling technology for SMES coils, IEEE T. Appl. Supercond., 2013; 23: 5602804–5602807.
• [9] Choi KY, Jo IS, Han SC, Han YH, Sung TH, Jung MH, Park GS, Lee SI. High and uniform critical current density for large-size YBa2Cu3O7-y single crystals, Curr. Appl. Phys., 2011; 11: 1020–1023.
• [10] Ulgen AT, Karaboga F, Karakaya M, Podila R, ARao AM, Belenli I. Improved transport properties of MgB2 superconducting round wires via minute addition of gold nanoparticles, Ceram. Int., 2019; 45: 1031–1036.
• [11] Karaboga F, Ulgen AT, Yetis H, Akdogan M, Pakdil M, Belenli I. Mechanical properties and uniformity of Fe-MgB2 wires upon various wire drawing steps, Mat. Sci. Eng. A-Struct., 2018; 721: 89–95.
• [12] Buckel W, Kleiner R. Superconductivity: Fundamentals and Applications, 2nd ed., Wiley-VCH Verlag, Weinheim, 2004.
• [13] Hasegawa T, Koizumi T, Hikichi Y, Nakatsu T, Scanlan R, Hirano N, Nagaya S. IEEE Trans. Appl. Sup., 2012; 12: 1136.
• [14] Miao H, Marken KR, Meinesz M, Czabaj B, Hong S. IEEE Trans. Appl. Sup., 2005; 15: 2554.
• [15] Tarascon J, McKinnon W, Barboux P, Hwang D, Bagley B, Greene L, Hull G, Lepage Y, Stoffel N, Giroud M. Phys. Rev. B., 1988; 38: 8885-8892.
• [16] Pickett WE. Electronic-structure of the high-temperature oxide superconductors, Rev. Mod. Phys., 1989; 61: 433–512.
• [17] Biju A, Aloysius RP, Syamaprasad U. Enhanced critical current density in Gd-added (Bi, Pb)-2212 bulk superconductor, Supercond. Sci. Technol., 2005; 18: 1454–1459.
• [18] Egi T, Wen JG, Kuroda K, Unoki H, Koshizuka N. High-current density of Nd(Ba,Nd)2Cu3O7-X single-crystal, Appl. Phys. Lett., 1995; 67: 2406–2408.
• [19] Zhou L, Zhang P, Ji P, Wang K, Wu X. The properties of YBCO superconductors prepared by a new approach-the powder melting process, Supercond. Sci. Technol., 1990; 3: 490–492.
• [20] Ling HC, Yan MF. Microhardness measurements on dopant modified superconducting YBa2Cu3O7 ceramics J. Appl. Phys., 1988; 64: 1307.
• [21] Kolemen U, Uzun O, Yilmazlar M, Guclu N, Yanmaz E. Hardness and microstructural analysis of Bi1.6Pb0.4Sr2Ca2−xSmxCu3Oy polycrystalline superconductors. J. Alloy. Compd.,2006; 415: 300-306.
• [22] Mohammed NH, Abou-Aly AI, Ibrahim IH, Awad R, Rekaby M. Mechanical properties of (Cu0. 5Tl0. 5)-1223 added by nano-SnO2. J. Alloy. Compd., 2009; 486: 733-737.
• [23] Dogruer M, Yildirim G, Ozturk O, Belenli I, Terzioglu C. Variation of Mechanical Properties of Cr Doped Bi-2212 Superconductors. J. Supercond. Nov. Magn., 2013; 26: 2949.
• [24] Li H, Bradt RC. The microhardness indentation load/size effect in rutile and cassiterite single crystals. J. Mater. Sci., 1993; 28: 917-926.
• [25] Hays C, Kendall EG. An analysis of knoop hardness., Metallography 1973; 6: 275-282.