Influence of crystal plane on the welding quality of YBCO bulk superconductor

M. Šefčiková; P. Diko; B. Bozzo; X. Granados; X. Obradors

doi:10.1016/j.mseb.2008.03.006

Influence of crystal plane on the welding quality of YBCO bulk superconductor

M. Šefčiková, P. Diko, B. Bozzo, X. Granados, X. Obradors

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

2 Citations (Scopus)

Abstract

The microstructure of welds parallel to the {1 0 0} and the {1 1 0} crystal planes of the single-grain YBa2Cu3O7/Y2BaCuO5 (Y123/Y211) bulk superconductors welded by Ag foil has been studied. It is shown that a zone free of small Y211 particles is formed along the both sides of the welds. Formation of this zone is explained by higher Y content in the melt produced during heating and leaking out of the weld. The different morphology of the rest solidified liquid in the welds, which has a tendency to form films in the {1 0 0} welds and granules in the {1 1 0} welds, is associated with different surface energies of welded surfaces. Cracking suppression of the {1 1 0} welds was observed and is ascribed to higher fracture toughness for this plane. The quality of the weld is confirmed by the trapped field measurements. © 2008 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	107-110
Journal	Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume	151
Issue number	1
DOIs	https://doi.org/10.1016/j.mseb.2008.03.006
Publication status	Published - 15 Jun 2008

Keywords

Microstructure
TSMG
Welds
YBCO superconductors

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title = "Influence of crystal plane on the welding quality of YBCO bulk superconductor",

abstract = "The microstructure of welds parallel to the {1 0 0} and the {1 1 0} crystal planes of the single-grain YBa2Cu3O7/Y2BaCuO5 (Y123/Y211) bulk superconductors welded by Ag foil has been studied. It is shown that a zone free of small Y211 particles is formed along the both sides of the welds. Formation of this zone is explained by higher Y content in the melt produced during heating and leaking out of the weld. The different morphology of the rest solidified liquid in the welds, which has a tendency to form films in the {1 0 0} welds and granules in the {1 1 0} welds, is associated with different surface energies of welded surfaces. Cracking suppression of the {1 1 0} welds was observed and is ascribed to higher fracture toughness for this plane. The quality of the weld is confirmed by the trapped field measurements. {\textcopyright} 2008 Elsevier B.V. All rights reserved.",

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author = "M. {\v S}ef{\v c}ikov{\'a} and P. Diko and B. Bozzo and X. Granados and X. Obradors",

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T1 - Influence of crystal plane on the welding quality of YBCO bulk superconductor

AU - Šefčiková, M.

AU - Diko, P.

AU - Bozzo, B.

AU - Granados, X.

AU - Obradors, X.

PY - 2008/6/15

Y1 - 2008/6/15

N2 - The microstructure of welds parallel to the {1 0 0} and the {1 1 0} crystal planes of the single-grain YBa2Cu3O7/Y2BaCuO5 (Y123/Y211) bulk superconductors welded by Ag foil has been studied. It is shown that a zone free of small Y211 particles is formed along the both sides of the welds. Formation of this zone is explained by higher Y content in the melt produced during heating and leaking out of the weld. The different morphology of the rest solidified liquid in the welds, which has a tendency to form films in the {1 0 0} welds and granules in the {1 1 0} welds, is associated with different surface energies of welded surfaces. Cracking suppression of the {1 1 0} welds was observed and is ascribed to higher fracture toughness for this plane. The quality of the weld is confirmed by the trapped field measurements. © 2008 Elsevier B.V. All rights reserved.

AB - The microstructure of welds parallel to the {1 0 0} and the {1 1 0} crystal planes of the single-grain YBa2Cu3O7/Y2BaCuO5 (Y123/Y211) bulk superconductors welded by Ag foil has been studied. It is shown that a zone free of small Y211 particles is formed along the both sides of the welds. Formation of this zone is explained by higher Y content in the melt produced during heating and leaking out of the weld. The different morphology of the rest solidified liquid in the welds, which has a tendency to form films in the {1 0 0} welds and granules in the {1 1 0} welds, is associated with different surface energies of welded surfaces. Cracking suppression of the {1 1 0} welds was observed and is ascribed to higher fracture toughness for this plane. The quality of the weld is confirmed by the trapped field measurements. © 2008 Elsevier B.V. All rights reserved.

KW - Microstructure

KW - TSMG

KW - Welds

KW - YBCO superconductors

U2 - 10.1016/j.mseb.2008.03.006

DO - 10.1016/j.mseb.2008.03.006

M3 - Article

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JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

SN - 0921-5107

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