Calculation of true hardness value of Zn added (BiPb)SrCaCuO superconductor by different models

Toplu A., Karaca I., KÖLEMEN U.

Ceramics International, cilt.41, sa.1, ss.953-960, 2015 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 41 Sayı: 1
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.ceramint.2014.09.014
  • Dergi Adı: Ceramics International
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.953-960
  • Anahtar Kelimeler: BSCCO superconductor, Indentation size effect (ISE), True hardness, Zn adding
  • Samsun Üniversitesi Adresli: Hayır

Özet

Prepared by a wet method (BiPb)SrCaCuO superconductors micro-hardness properties was investigated by dynamic micro-indentation technique. The indentation load-displacement curves of the materials were plotted by applied load varying from 200 to 1800 mN. Micro-hardness numbers carry out from loading-unloading process showed load dependence hardness (LIH), i.e., indentation size effect (ISE). The ISE was examined with the theoretical models such as Meyer's law, the Hays-Kendal approach, the Elastic/Plastic Deformation model, the Proportional Specimen Resistance (PSR) model, and the Modified Proportional Specimen Resistance (MPSR) model. MPSR model was obtained the better model to calculate micro-hardness numbers of samples. According to this calculating result, the true hardness of superconductor were increasing with the increasing of the amount of Zn% and.Bi-2212 phase into mixture.