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 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.
本文言語 | English |
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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 | |
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