Preparation and Mechanical Properties of Large Single Domain DyBaCuO Superconductor

Abstract

We prepared large single domain of DyBaCuO (Dy-123) superconductor for future applications such as a superconducting flywheel for energy storage system, magnetic separation, and a bulk magnet. Dy-123 superconductors are expected to have high and trapped field properties. Melt-textured single domain of Dy-123 system superconductor about 48 mm in diameter and 10 mm in thickness was fabricated with a seeding and temperature gradient method in air. Dy-123 and Dy-211 powders were mixed in a molar ratio of 1:0.3, and Ag 2 O of 10 wt% and Pt of 0.5 wt% were added to the mixture. The maximum trapped magnetic field over the bulk was approximately 0.2 T at 77.3 K. We also discussed mechanical properties such as the bending stress, the hardness and the surface roughness of the Dy-123 bulk. Mechanical property results showed important information for evaluating Dy-123 bulks.

Stress–strain behavior under static loading in Gd123 high-temperature superconductors at 77K

“…Microstructures of RE123 melt-processed bulks and those of RE123 materials of HTS conductors are similar to each other in that both of them have single-grained matrices, although the composition and size of the secondary phase are different from each other [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. For example, melt-processed bulks consist of RE123 matrix and RE 2 BaCuO 5 (RE211) secondary phase particles.…”

Preparation and Mechanical Properties of Large Single Domain GdBaCuO Superconductor With Low Void Density

“…It should be noted that the mechanical properties in highoxide superconductors are very crucial as well as , and for industrial applications [7]- [13]. [17].…”

Preparation and Properties of High-Quality Melt Growth Gd123 Bulks With Low Void Density: Flexural Strength at 77 K

“…It should be noted that the mechanical properties in highoxide superconductors are very crucial as well as , and irreversibility field for industrial applications [5]- [13]. Oxide superconductors have the intrinsic brittleness and anisotropy, Manuscript and the strength and fracture toughness of the materials are low due to defects inside the superconductors [5]- [17].…”