| Yazarlar |
Mustafa Yılmazlar
Sakarya Üniversitesi, Türkiye |
Prof. Dr. Özgür ÖZTÜRK
Abant İzzet Baysal Üniversitesi, Türkiye |
|
Osman Görür
Abant İzzet Baysal Üniversitesi, Türkiye |
|
İbrahim Belenli
Abant İzzet Baysal Üniversitesi, Türkiye |
|
Cabir Terzioğlu
Abant İzzet Baysal Üniversitesi, Türkiye |
| Özet |
| In order to investigate the role of Au doping and diffusion-annealing durationon the mechanical properties of Bi-Pb-Sr-Ca-Cu-O, Bi 1.8Pb0.35Sr1.9Ca2.1Cu 3Oy superconductors were prepared by standard solid-state reaction methods. Doping of Bi-2223 was carried out by means of gold diffusion during sintering from an evaporated gold film on pellets. The effect of the diffusion-annealing duration on the mechanical and superconducting properties of these compounds was investigated using scanning electron microscopy, dc resistivity and hardness measurements. These measurements indicated that the Au doping and diffusion-annealing time increased the superconducting transition temperature, Vickers hardness, Young's modulus, yield strength, fracture toughness values and improved the grain connectivity. The mechanical properties of the samples were found to be load dependent. In addition, we calculated the load independent hardness, Young's modulus, yield strength and fracture toughness of the samples. These mechanical properties of the Au-doped samples were dependent on the diffusion-annealing time. Possible reasons for the observed improvements in the superconducting and mechanical properties due to Au diffusion are discussed. © IOP Publishing Ltd. |
| Anahtar Kelimeler |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | Supercond. Sci. and Technol. |
| Dergi Tarandığı Indeksler | SCI |
| Makale Dili | İngilizce |
| Basım Tarihi | 03-2007 |
| Cilt No | 20 |
| Sayı | 4 |
| Sayfalar | 365 / |
