Effects of Dy2BaCuO5 contents on microstructure and mechanical strength of Ag-added Dy-Ba-Cu-O bulk superconductors

S. Nariki; N. Sakai; M. Murakami; I. Hirabayashi

doi:10.1016/j.physc.2004.01.084

Effects of Dy₂BaCuO₅ contents on microstructure and mechanical strength of Ag-added Dy-Ba-Cu-O bulk superconductors

S. Nariki, N. Sakai, M. Murakami, I. Hirabayashi

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

28 Citations (Scopus)

Abstract

We investigated the microstructure and mechanical strength of Ag-added DyBa₂Cu₃O_y (Dy123) bulk superconductors with various Dy₂BaCuO₅ (Dy211) contents. Single-grain Dy123 bulk samples 32 mm in diameter with the addition of 5-40 mol% of Dy211 and 10 wt.% of Ag₂O were fabricated in air. The sample with 5 mol% Dy211 contained many macro-cracks in the ab-plane. The amount of cracks decreased with increasing Dy211 content. Three-point bending tests were performed at room temperature to measure the mechanical properties. The average bending strength of the sample with 5 mol% Dy211 was 73 MPa. The strength was improved to 95 MPa with an addition of 40 mol% Dy211.

Original language	English
Pages (from-to)	651-656
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	412-414
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2004.01.084
Publication status	Published - 2004 Oct

Keywords

DyBa CuO
DyBaCuO
Mechanical strength
Melt-textured bulk
Microstructure

ASJC Scopus subject areas

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

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title = "Effects of Dy2BaCuO5 contents on microstructure and mechanical strength of Ag-added Dy-Ba-Cu-O bulk superconductors",

abstract = "We investigated the microstructure and mechanical strength of Ag-added DyBa2Cu3Oy (Dy123) bulk superconductors with various Dy2BaCuO5 (Dy211) contents. Single-grain Dy123 bulk samples 32 mm in diameter with the addition of 5-40 mol% of Dy211 and 10 wt.% of Ag2O were fabricated in air. The sample with 5 mol% Dy211 contained many macro-cracks in the ab-plane. The amount of cracks decreased with increasing Dy211 content. Three-point bending tests were performed at room temperature to measure the mechanical properties. The average bending strength of the sample with 5 mol% Dy211 was 73 MPa. The strength was improved to 95 MPa with an addition of 40 mol% Dy211.",

keywords = "DyBa CuO, DyBaCuO, Mechanical strength, Melt-textured bulk, Microstructure",

author = "S. Nariki and N. Sakai and M. Murakami and I. Hirabayashi",

note = "Funding Information: This work is partially supported by the New Energy and Industrial Technology Development Organization (NEDO).",

year = "2004",

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AU - Nariki, S.

AU - Sakai, N.

AU - Murakami, M.

AU - Hirabayashi, I.

N1 - Funding Information: This work is partially supported by the New Energy and Industrial Technology Development Organization (NEDO).

PY - 2004/10

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N2 - We investigated the microstructure and mechanical strength of Ag-added DyBa2Cu3Oy (Dy123) bulk superconductors with various Dy2BaCuO5 (Dy211) contents. Single-grain Dy123 bulk samples 32 mm in diameter with the addition of 5-40 mol% of Dy211 and 10 wt.% of Ag2O were fabricated in air. The sample with 5 mol% Dy211 contained many macro-cracks in the ab-plane. The amount of cracks decreased with increasing Dy211 content. Three-point bending tests were performed at room temperature to measure the mechanical properties. The average bending strength of the sample with 5 mol% Dy211 was 73 MPa. The strength was improved to 95 MPa with an addition of 40 mol% Dy211.

AB - We investigated the microstructure and mechanical strength of Ag-added DyBa2Cu3Oy (Dy123) bulk superconductors with various Dy2BaCuO5 (Dy211) contents. Single-grain Dy123 bulk samples 32 mm in diameter with the addition of 5-40 mol% of Dy211 and 10 wt.% of Ag2O were fabricated in air. The sample with 5 mol% Dy211 contained many macro-cracks in the ab-plane. The amount of cracks decreased with increasing Dy211 content. Three-point bending tests were performed at room temperature to measure the mechanical properties. The average bending strength of the sample with 5 mol% Dy211 was 73 MPa. The strength was improved to 95 MPa with an addition of 40 mol% Dy211.

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KW - Mechanical strength

KW - Melt-textured bulk

KW - Microstructure

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