Effects of ZnO addition on mechanical properties of Bi1.84Pb0.34Sr1.91Ca2.03Cu3.06O10 prepared by a wet technique

Karaca I., Uzun O., Koelemen U., Yilmaz F., Sahin O.

JOURNAL OF ALLOYS AND COMPOUNDS, cilt.476, sa.1-2, ss.486-491, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 476 Sayı: 1-2
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.jallcom.2008.09.077
  • Dergi Adı: JOURNAL OF ALLOYS AND COMPOUNDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.486-491
  • Anahtar Kelimeler: Bi-2223, Wet technique, ZnO, Mechanical properties, Depth Sensing Indentation, SENSING INDENTATION TECHNIQUE, CRITICAL-CURRENT-DENSITY, CU-O SUPERCONDUCTORS, POLYCRYSTALLINE SUPERCONDUCTORS, SINGLE-CRYSTALS, DYNAMIC HARDNESS, NANOINDENTATION, MICROHARDNESS, CERAMICS, MODULUS
  • Yozgat Bozok Üniversitesi Adresli: Hayır

Özet

In this study, ZnO molar wt% 0, 5,10,20,30, and 50 added Bi1.84Pb0.34Sr1.91Ca2.03Cu3.06O10 superconductors were prepared by wet technique. The experimental works consist of powder X-ray diffraction (XRD) for phase analyses and c-axes parameters, scanning electron microscopy (SEM) for microstructure examination, and microhardness measurements for mechanical properties. These measurements showed that Zn-added material, in comparison with the pure sample, had increased c-axes parameters and decreased grain size. In addition, the experimental results of microhardness measurements were analyzed using Oliver-Pharr model. It was observed that the change of indentation hardness (H-rr) and reduced elastic modulus (E-r) values showed an increasing trend with ZnO addition and exhibited peak load dependence (i.e., indentation size effect (ISE)). (C) 2008 Elsevier B.V. All rights reserved.