Mechanical properties of Nd-Ba-Cu-O bulk superconductors

Motohide Matsui; Naomichi Sakai; Masato Murakami; Kozo Osamura

doi:10.1088/0953-2048/16/9/321

Mechanical properties of Nd-Ba-Cu-O bulk superconductors

Motohide Matsui, Naomichi Sakai, Masato Murakami, Kozo Osamura

Research output: Contribution to journal › Conference article › peer-review

11 Citations (Scopus)

Abstract

We investigated the effects of Nd422 and Ag particles on the mechanical properties in Nd-Ba-Cu-O bulk superconductors. Both Nd422 and Ag particles were effective in decreasing the amount of microcracks running along the c direction. In the case of Nd422, however, excessive Nd422 addition enhanced the crack propagation, resulting in the degradation of mechanical strength. In the case of Ag addition, the beneficial effect of its ductile mechanical property was not observed. This was due to a relatively large size of Ag particles and low interfacial strength between Ag and Nd123 matrix. It was remarkable that the Weibull coefficient of the sample with Ag₂O addition exceeded 13, which is reliable enough for practical engineering applications.

Original language	English
Pages (from-to)	1086-1091
Number of pages	6
Journal	Superconductor Science and Technology
Volume	16
Issue number	9
DOIs	https://doi.org/10.1088/0953-2048/16/9/321
Publication status	Published - 2003 Sept 1
Externally published	Yes
Event	MEMO 3: Second International Workshop on Mechano-Electromagetic Properties of Composite Superconductors - Kyoto, Japan Duration: 2003 Mar 3 → 2003 Mar 5

ASJC Scopus subject areas

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

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title = "Mechanical properties of Nd-Ba-Cu-O bulk superconductors",

abstract = "We investigated the effects of Nd422 and Ag particles on the mechanical properties in Nd-Ba-Cu-O bulk superconductors. Both Nd422 and Ag particles were effective in decreasing the amount of microcracks running along the c direction. In the case of Nd422, however, excessive Nd422 addition enhanced the crack propagation, resulting in the degradation of mechanical strength. In the case of Ag addition, the beneficial effect of its ductile mechanical property was not observed. This was due to a relatively large size of Ag particles and low interfacial strength between Ag and Nd123 matrix. It was remarkable that the Weibull coefficient of the sample with Ag2O addition exceeded 13, which is reliable enough for practical engineering applications.",

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T1 - Mechanical properties of Nd-Ba-Cu-O bulk superconductors

AU - Matsui, Motohide

AU - Sakai, Naomichi

AU - Murakami, Masato

AU - Osamura, Kozo

PY - 2003/9/1

Y1 - 2003/9/1

N2 - We investigated the effects of Nd422 and Ag particles on the mechanical properties in Nd-Ba-Cu-O bulk superconductors. Both Nd422 and Ag particles were effective in decreasing the amount of microcracks running along the c direction. In the case of Nd422, however, excessive Nd422 addition enhanced the crack propagation, resulting in the degradation of mechanical strength. In the case of Ag addition, the beneficial effect of its ductile mechanical property was not observed. This was due to a relatively large size of Ag particles and low interfacial strength between Ag and Nd123 matrix. It was remarkable that the Weibull coefficient of the sample with Ag2O addition exceeded 13, which is reliable enough for practical engineering applications.

AB - We investigated the effects of Nd422 and Ag particles on the mechanical properties in Nd-Ba-Cu-O bulk superconductors. Both Nd422 and Ag particles were effective in decreasing the amount of microcracks running along the c direction. In the case of Nd422, however, excessive Nd422 addition enhanced the crack propagation, resulting in the degradation of mechanical strength. In the case of Ag addition, the beneficial effect of its ductile mechanical property was not observed. This was due to a relatively large size of Ag particles and low interfacial strength between Ag and Nd123 matrix. It was remarkable that the Weibull coefficient of the sample with Ag2O addition exceeded 13, which is reliable enough for practical engineering applications.

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Y2 - 3 March 2003 through 5 March 2003

ER -

Mechanical properties of Nd-Ba-Cu-O bulk superconductors

Abstract

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