Mechanical Properties of BSCCO Superconductor by Oliver-Pharr Method and Work of Indentation Approach

Kolemen U., Uzun O., Emeksiz C., Yilmaz F., Coskun A., EKİCİBİL A., ...Daha Fazla

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, cilt.26, sa.11, ss.3215-3219, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 26 Sayı: 11
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1007/s10948-013-2178-4
  • Dergi Adı: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3215-3219
  • Anahtar Kelimeler: Bulk BSCCO superconductor, Mechanical characterization, Depth sensing indentation technique, Oliver-Pharr method, Work of indentation approach, HARDNESS, BULK, MODULUS, SYSTEM, LOAD
  • Çukurova Üniversitesi Adresli: Evet

Özet

Polycrystalline superconducting Bi-Pb-Gd-Sr-Ca-Cu-O bulk samples with nominal composition Bi1.7Pb0.3-x Gd (x) Sr2Ca3Cu4O12+y (x=0.00,0.01,0.05) were produced by the melt quenching method. The mechanical properties of the samples were characterized by depth sensing indentation technique under different peak loads ranging from 200 to 1800 mN. The experimental data were comparatively analyzed by the Oliver-Pharr method and a work of indentation approach. It was found that the work of indentation approach gave more reliable results because of the reducing pile-up effect. The results implied that both microhardness and reduced elastic modulus increased with increasing Gd substitution.

Polycrystalline superconducting Bi-Pb-Gd-Sr-Ca-Cu-O bulk samples with nominal composition Bi1.7Pb0.3-x Gd (x) Sr2Ca3Cu4O12+y (x=0.00,0.01,0.05) were produced by the melt quenching method. The mechanical properties of the samples were characterized by depth sensing indentation technique under different peak loads ranging from 200 to 1800 mN. The experimental data were comparatively analyzed by the Oliver-Pharr method and a work of indentation approach. It was found that the work of indentation approach gave more reliable results because of the reducing pile-up effect. The results implied that both microhardness and reduced elastic modulus increased with increasing Gd substitution