Effects of binder addition on the mechanical properties of bulk Y-Ba-Cu-O superconductors

H. Seki, A. Wongsatanawarid, S. Kobayashi, Y. Ikeda, Masato Murakami

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We studied the effects of binder addition on the mechanical properties of bulk Y-Ba-Cu-O superconductors. We prepared YBa2Cu3O y, Y2BaCuO5 powders and polyvinyl alcohol mixed with water as a binder. These raw materials were mixed, and the binder-added powders were pressed into pellets. The hardness of the green compacts with binder is higher than that without the binder. However, the hardness of green compacts with 8% binder is the same as that with 4% binder. The maximum compression strength of the precursor with binder is higher than that without binder. Equally, the maximum strength of the green compacts with 8% binder is higher than that with 4% binder. The differential thermal analysis measurements showed that the exothermic reaction due to the decomposition of the organic binder started at 550 °C and gradually proceeded with further heating. After de-binder treatment, BaCO3 powders were produced on the green compacts. The green compacts were subjected to melt-processing. We also measured trapped magnetic fields of binder-added bulk Y-Ba-Cu-O superconductors with a Hall probe scanning device. Trapped magnetic field of the bulk added with 4% is higher than that of the binder-free bulk. Hence, Y-Ba-Cu-O bulk with suitable amount of binder shows good influence for mechanical strength and trapped magnetic field.

Original languageEnglish
Pages (from-to)1177-1180
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume470
Issue number20
DOIs
Publication statusPublished - 2010 Nov 1

Fingerprint

trapped magnetic fields
YBCO superconductors
Superconducting materials
Binders
mechanical properties
Mechanical properties
hardness
exothermic reactions
polyvinyl alcohol
pellets
scanners
thermal analysis
alcohols
decomposition
heating
probes
Powders
water
Magnetic fields
Hardness

Keywords

  • Binder
  • Bulk
  • Hardness
  • Mechanical strength
  • Trapped magnetic field
  • Y-Ba-Cu-O

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Electronic, Optical and Magnetic Materials

Cite this

Effects of binder addition on the mechanical properties of bulk Y-Ba-Cu-O superconductors. / Seki, H.; Wongsatanawarid, A.; Kobayashi, S.; Ikeda, Y.; Murakami, Masato.

In: Physica C: Superconductivity and its Applications, Vol. 470, No. 20, 01.11.2010, p. 1177-1180.

Research output: Contribution to journalArticle

Seki, H. ; Wongsatanawarid, A. ; Kobayashi, S. ; Ikeda, Y. ; Murakami, Masato. / Effects of binder addition on the mechanical properties of bulk Y-Ba-Cu-O superconductors. In: Physica C: Superconductivity and its Applications. 2010 ; Vol. 470, No. 20. pp. 1177-1180.
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