Crack reduction in a large bulk Y-Ba-Cu-O superconductor through liquid binder addition

A. Wongsatanawarid; H. Seki; S. Kobayashi; M. Murakami

doi:10.1016/j.physc.2010.05.065

Crack reduction in a large bulk Y-Ba-Cu-O superconductor through liquid binder addition

A. Wongsatanawarid, H. Seki, S. Kobayashi, M. Murakami

研究成果: Article › 査読

7 被引用数 (Scopus)

抄録

We have studied the effects of the incorporation of polyvinyl acetate (PVA) aqueous solution on the formability of the precursor Y-Ba-Cu-O samples with the aim of improving the mechanical properties of large bulk RE-Ba-Cu-O superconductors that are susceptible to cracking. We found that the green compacts of YBa₂Cu₃O_y and Y ₂BaCuO₅ powders added with PVA liquid binder exhibited good mechanical properties and could be mechanically machined without defects. We could successfully drill 17 holes of 1 mm diameter into the green compact. The drilled samples were subjected to melt-processing and oxygen annealing, and further characterized with microstructural observations and magnetization measurements. The results showed that liquid binder addition was very effective in reducing cracks for large melt-processed Y-Ba-Cu-O superconductors.

本文言語	English
ページ（範囲）	1167-1169
ページ数	3
ジャーナル	Physica C: Superconductivity and its applications
巻	470
号	20
DOI	https://doi.org/10.1016/j.physc.2010.05.065
出版ステータス	Published - 2010 11 1

ASJC Scopus subject areas

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

文献へのアクセス

10.1016/j.physc.2010.05.065

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引用スタイル

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abstract = "We have studied the effects of the incorporation of polyvinyl acetate (PVA) aqueous solution on the formability of the precursor Y-Ba-Cu-O samples with the aim of improving the mechanical properties of large bulk RE-Ba-Cu-O superconductors that are susceptible to cracking. We found that the green compacts of YBa2Cu3Oy and Y 2BaCuO5 powders added with PVA liquid binder exhibited good mechanical properties and could be mechanically machined without defects. We could successfully drill 17 holes of 1 mm diameter into the green compact. The drilled samples were subjected to melt-processing and oxygen annealing, and further characterized with microstructural observations and magnetization measurements. The results showed that liquid binder addition was very effective in reducing cracks for large melt-processed Y-Ba-Cu-O superconductors.",

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AU - Kobayashi, S.

AU - Murakami, M.

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