Formation of pores in melt-processed RE-Ba-Cu-O and the techniques to reduce pore density

N. Sakai; D. Ishihara; K. Inoue; M. Murakami

doi:10.1088/0953-2048/15/5/312

Formation of pores in melt-processed RE-Ba-Cu-O and the techniques to reduce pore density

N. Sakai, D. Ishihara, K. Inoue, M. Murakami

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

We have studied the formation of pores in melt-processed RE-Ba-Cu-O. The pores were partly formed due to the oxygen bubbles generated during the peritectic decomposition of RE123 via RE123 → RE211 + liquid + O₂. When the sample was heated to the temperature high above the peritectic decomposition temperature, a large amount of oxygen gas was generated from the sample. The inert gas entrapment during melting also caused pore formation. The control of the composition, atmosphere and heating conditions was effective in reducing the amount of pores.

Original language	English
Pages (from-to)	698-701
Number of pages	4
Journal	Superconductor Science and Technology
Volume	15
Issue number	5
DOIs	https://doi.org/10.1088/0953-2048/15/5/312
Publication status	Published - 2002 May 1

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/15/5/312

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abstract = "We have studied the formation of pores in melt-processed RE-Ba-Cu-O. The pores were partly formed due to the oxygen bubbles generated during the peritectic decomposition of RE123 via RE123 → RE211 + liquid + O2. When the sample was heated to the temperature high above the peritectic decomposition temperature, a large amount of oxygen gas was generated from the sample. The inert gas entrapment during melting also caused pore formation. The control of the composition, atmosphere and heating conditions was effective in reducing the amount of pores.",

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AB - We have studied the formation of pores in melt-processed RE-Ba-Cu-O. The pores were partly formed due to the oxygen bubbles generated during the peritectic decomposition of RE123 via RE123 → RE211 + liquid + O2. When the sample was heated to the temperature high above the peritectic decomposition temperature, a large amount of oxygen gas was generated from the sample. The inert gas entrapment during melting also caused pore formation. The control of the composition, atmosphere and heating conditions was effective in reducing the amount of pores.

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Formation of pores in melt-processed RE-Ba-Cu-O and the techniques to reduce pore density

Abstract

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