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Mechanical properties of polycrystalline RuSr2GdCu2O8 superconductor |
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| Authors: | Lincoln Brum Leite Gusmão Pinheiro Francisco Carlos Serbena Carlos Eugênio Foerster Pedro Rodrigues Júnior Alcione Roberto Jurelo Adilson Luiz Chinelatto Jorge Luiz Pimentel Júnior |
| Institution: | 1. Departamento de Física, Universidade Estadual de Ponta Grossa, Av. Gen. Carlos Cavalcanti 4748, 84030-000 Ponta Grossa, Paraná, Brazil;2. Departamento de Engenharia de Materiais, Universidade Estadual de Ponta Grossa, Av. Gen. Carlos Cavalcanti 4748, 84030-000 Ponta Grossa, Paraná, Brazil;3. Instituto de Física, Universidade Federal do Rio Grande do Sul, Caixa Postal 15.051, 91.501-970 Porto Alegre, Rio Grande do Sul, Brazil |
| Abstract: | The main objective of this paper is to report the room temperature hardness and elastic modulus of the RuSr2GdCu2O8 superconductor phase by instrumented indentation. Polycrystalline samples were produced by a solid state reaction technique. The samples were also characterized by scanning electron microscopy, X-ray diffraction and electrical resistivity measurements. The influence of porosity on the mechanical properties was avoided by considering only those indentations inside the grains. The hardness and elastic modulus were 8.6 GPa and 145 GPa, respectively. These values are comparable with those of Y-123. The indentation fracture toughness evaluated after conventional Vickers indentation was 1.9 MPa m1/2. |
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