Evaluations of Mechanical Properties in Dy123 Single-Grain Bulk Superconductors With Low Porosity

Author

Murakami, Akira ; Miyata, Hiroshi ; Hashimoto, Ryota ; Katagiri, Kazumune ; Iwamoto, Akifumi

Author_Institution

Fac. of Sci. & Technol., Hirosaki Univ., Hirosaki, Japan

Volume

19

Issue

3

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

2995

Lastpage

2998

Abstract

In order to improve the mechanical properties of the Dy123 bulk material, a precursor was melted in 100% O₂ 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% O₂ atmosphere were also evaluated and the relationship between the mechanical properties and the porosity associated with the oxygen annealing was discussed.

Keywords

Young´s modulus; annealing; barium compounds; bending strength; dysprosium compounds; high-temperature superconductors; indentation; melt processing; porosity; Dy123 single-grain bulk superconductors; DyBa₂Cu₃O_x; Vickers indentation tests; Young´s modulus; bending strength; bending tests; melt-processing; oxygen annealing; porosity; Dysprosium; high-temperature superconductors; mechanical properties; single-grain bulk;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2019241

Filename

5067171