| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1818451 | Physica C: Superconductivity and its Applications | 2011 | 5 Pages |
In order to evaluate the fracture toughness of DyBa2Cu3Ox (Dy123) low porosity bulks, bending tests of V-notched specimens cut from the bulks were carried out. Fracture toughness evaluations of a conventional Dy123 bulk which had pores were also carried out and effects of elimination of pores on the fracture toughness were investigated. Fracture toughness values at 77 K of the low porosity bulks were higher than those of the porous bulk. These fracture toughness values at 77 K were higher than the values at room temperature. Fracture toughness of the low porosity bulk was improved by Ag addition.
► Fracture toughness values were measured for Dy123 bulks. ► Fracture toughness was improved by reducing porosity. ► Fracture toughness values at 77 K were higher than those at room temperature. ► Fracture toughness was also improved by Ag addition.
