Evaluations of Mechanical Properties in Dy123 Single-Grain Bulk Superconductors With Low Porosity

The skeleton of concrete is determined by aggregate gradation. This paper studies the permeability and mechanical properties of pervious concrete affected by the aggregate gradation. Eight levels of aggregate gradation were selected, which included the single grain grading, double size grain grading and continuous grading. It is found that by series of tests, compared to the pervious concrete with the single grain grading and double size grain grading, the pervious concrete with continuous grading has low porosity, small permeability coefficient, high cubic compressive strength and similar splitting tensile strength and the flexural strength.

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Processing of high performance (LRE)-Ba–Cu–O large, single-grain bulk superconductors in air

Physica C Superconductivity ◽

10.1016/j.physc.2006.04.067 ◽

2006 ◽

Vol 445-448 ◽

pp. 286-290 ◽

Cited By ~ 18

Author(s):

N. Hari Babu ◽

K. Iida ◽

Y. Shi ◽

D.A. Cardwell

Keyword(s):

High Performance ◽

Bulk Superconductors ◽

Single Grain ◽

Grain Bulk

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Low Temperature Mechanical Properties of RE-Ba-Cu-O Large Single-Grain Bulk 150 mm in Diameter

IEEE Transactions on Applied Superconductivity ◽

10.1109/tasc.2013.2238984 ◽

2013 ◽

Vol 23 (3) ◽

pp. 6800505-6800505 ◽

Cited By ~ 2

Author(s):

A. Murakami ◽

H. Fujimoto ◽

A. Iwamoto

Keyword(s):

Mechanical Properties ◽

Low Temperature ◽

Single Grain ◽

Grain Bulk

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Use of $\mbox{Sm}\text{-}123 + \mbox{Sm}\text{-} 211$ Mixed-Powder Buffers to Assist the Growth of SmBCO and ZrO2-doped SmBCO Single Grain, Bulk Superconductors

IEEE Transactions on Applied Superconductivity ◽

10.1109/tasc.2014.2381855 ◽

2015 ◽

Vol 25 (3) ◽

pp. 1-5 ◽

Cited By ~ 5

Author(s):

Wen Zhao ◽

Yunhua Shi ◽

Anthony R. Dennis ◽

David A. Cardwell

Keyword(s):

Mixed Powder ◽

Bulk Superconductors ◽

Single Grain ◽

Grain Bulk

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Cracking in melt-grown RE–Ba–Cu–O single-grain bulk superconductors

Superconductor Science and Technology ◽

10.1088/0953-2048/17/11/r01 ◽

2004 ◽

Vol 17 (11) ◽

pp. R45-R58 ◽

Cited By ~ 68

Author(s):

P Diko

Keyword(s):

Bulk Superconductors ◽

Single Grain ◽

Grain Bulk

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The effect of very high barium content in the precursor on the properties of GdBCO single grain bulk superconductors

Journal of Materials Research ◽

10.1557/jmr.2009.0032 ◽

2009 ◽

Vol 24 (1) ◽

pp. 10-18 ◽

Cited By ~ 7

Author(s):

Yunhua Shi ◽

N. Hari Babu ◽

Kazumasa Iida ◽

David A. Cardwell

Keyword(s):

Melt Processing ◽

Processing Route ◽

Bulk Superconductors ◽

Single Grain ◽

High Concentrations ◽

New Processing ◽

Precursor Powders ◽

Grain Bulk ◽

First Time ◽

Very High

A new melt processing route for the fabrication of large grain Gd-Ba-Cu-O (GdBCO) bulk superconductors has been developed based on the use of novel GdBa4Cu3O8−δ (Gd-143) and GdBa6Cu3O10−δ (Gd-163) precursor compositions. The new processing route enables the fabrication of large single grains from precursor powders that contain high concentrations of Ba. The superconducting properties and microstructures of GdBCO single grains with extra Ba fabricated via this new processing route are reported. Most importantly, the possible formation of a new form of Gd1+xBa2−xCu3O7−δ solid solution (Gd-123ss) with x < 0 in single grains fabricated from the Ba-rich precursor are discussed for the first time based on the superconducting, chemical, and structural properties of the large GdBCO grains.

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