학술논문
Evaluations of Mechanical Properties in Dy123 Single-Grain Bulk Superconductors With Low Porosity
Document Type
Periodical
Author
Source
IEEE Transactions on Applied Superconductivity IEEE Trans. Appl. Supercond. Applied Superconductivity, IEEE Transactions on. 19(3):2995-2998 Jun, 2009
Subject
Language
ISSN
1051-8223
1558-2515
2378-7074
1558-2515
2378-7074
Abstract
In order to improve the mechanical properties of the Dy123 bulk material, a precursor was melted in 100% ${\rm O}_{2}$ atmosphere to obtain bulk with low porosity. Evaluations of the mechanical properties in the Dy123 bulk were carried out through bending tests and Vickers indentation tests. The mechanical properties such as Young's modulus and bending strength were improved by eliminating pores. The mechanical properties of Dy123 bulks melt-processed in 50 and 75% ${\rm O}_{2}$ atmosphere were also evaluated and the relationship between the mechanical properties and the porosity associated with the oxygen annealing was discussed.