Preparation of high quality single domain SmBCO bulks by modified TSIG method in air with new solid phase of Sm2O3 + xBaCuO2

Li, Qiang; Yang, Wan‐Min

doi:10.1016/j.jallcom.2015.08.029

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…More recently, the process has been extended to (RE)BCO + Ag systems, which are currently under investigation and have already produced some promising initial results. GdBCO [91][92][93], SmBCO [94] and even binary systems such as (Y,Gd)BCO [95] bulk superconductors have been fabricated by TSIG-based techniques. In addition, the TSIG approach is suitable for the fabrication of dense generic seeds [96], which has enabled directly the manufacture of Mg-doped NdBCO seed crystals that are characterised by both a higher melting temperature and by reduced porosity in their microstructure, therefore limiting dramatically the possibility of liquid phase segregation within the seed crystal and hence avoiding possible melting of the seed.…”

Section: Infiltration Growth Strategymentioning

confidence: 99%

The Processing and Properties of Bulk (Re)bco High Temperature Superconductors: Current Status and Future Perspectives

Namburi

Shi

Cardwell

2021

Supercond. Sci. Technol.

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Bulk (RE)-Ba-Cu-O [(RE)BCO] cuprate HTS have been developed steadily towards a wide range of sustainable engineering and technological applications since their discovery in 1986 based primarily on their unique potential to trap very large magnetic fields (>5 T) at temperatures that are accessible potentially by thermo-electric cooling techniques. Trapped fields of ∼10 T at the surface of individual (RE)BCO bulk single grains and in excess of 17 T in a reinforced two-sample stack are now being achieved reliably. This paper reviews the current state of the art of the processing of large, single grain (RE)BCO bulk superconductors required to trap fields of this magnitude, and specifically via two advanced fabrication approaches; the traditional TSMG process and the more recently developed TSIG technique. The focus of the review is on optimising the critical processing parameters to achieve high-quality, high performance single grain (RE)BCO bulk superconductors specifically for high-field applications. The review also summarises recent advances in processing, such as the integration of the so-called buffer technique into the TSMG and TSIG processing methodologies to achieve improved reliability in single grain growth with a success rate exceeding 90%, the development of a Mg-doped NdBCO generic seed crystal for the successful growth of all rare-earth and light-rare earth based bulk superconductors [(RE)BCO and (LRE)BCO] and the introduction of nano-size stable, non-superconducting phase(s) to the bulk microstructure to improve the intrinsic flux pinning strength of the material, and hence trapped magnetic field. Details of the two-step buffer-aided TSIG technique developed recently that yields dense, near-net shaped, high performance (RE)BCO bulk superconductors with improved superconducting and mechanical properties are also presented. Suitable sample-seed configurations for effective multi-seeding are discussed, which enables the production of high aspect ratio, bar-shaped (RE)BCO quasi-single grains that exhibit improved levitation forces required in Maglev-based applications, for example, are discussed. The electrical, mechanical, microstructural and magnetic properties (including those achieved from a pulsed-field magnetisation approach) of the different (RE)BCO systems are presented and the relevant correlation in properties and performance highlighted, accordingly. Finally, a brief summary of existing applications and prospects for near-future exploitation of these remarkable, technologically important materials, and particularly in the medical and pharma-industries, is provided.

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Section: Infiltration Growth Strategymentioning

confidence: 99%

The Processing and Properties of Bulk (Re)bco High Temperature Superconductors: Current Status and Future Perspectives

Namburi

Shi

Cardwell

2021

Supercond. Sci. Technol.

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“…There are two major methods to fabricate RE123 bulk materials. One is the Top-Seeded Melt Growth (TSMG) method [28] and the other is Top-Seeded Infiltration Growth (TSIG) method [29]. Schematic illustrations of these methods are shown in Fig.…”

Section: High Temperature Superconducting Bulk Materialsmentioning

confidence: 99%

Current Status of High Temperature Superconducting Materials and their Various Applications

Shimoyama,

Motoki

2023

IEEJ Transactions Elec Engng

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It took longer time than initially expected for development of cuprate superconducting materials for practical applications. However, there are about 20 companies that manufacture and supply long conductors and bulk materials at present. Although various large‐scale projects have supported the process of material development, material and equipment developments have been progressing under the leadership of manufacturers in recent years. In this paper, current status of development of high‐temperature superconducting materials, including MgB2, which is classified as a high temperature superconductor, and their applications are summarized, along with the history, basic physical features and recent topics. © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

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“…In order to reduce the cost and simplify the fabrication process, we have invented a new RE + 011 TSIG method to fabricate single-domain REBCO superconductor by using only one precursor powder BaCuO 2 (011) [11][12][13][14][15]. e traditional solid phase RE211 and the traditional liquid phase (REBa 2 Cu 3 O 7-y and Ba 3 Cu 5 O 8 ) are, respectively, replaced with the new solid phase (RE 2 O 3 + xBaCuO 2 ) and Y 2 O 3 + 6CuO + 10BaCuO 2 .…”

Section: Introductionmentioning

confidence: 99%

Effects of Gd211 Particles Characteristic in the Precursor Pellets on the Levitation Force of Single‐Domain GdBCO Bulks Prepared by the Gd + 011 TSIG Method

Yuan

Yang

2018

Advances in Materials Science and Engineering

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In this paper, single-domain GdBCO bulks have been fabricated by a new Gd + 011 TSIG method with precursor solid phase pellets (PSPPs) of different Gd211 particle sizes and distributions, prepared by solid state reaction with well-mixed (Gd2O3 + BaCuO2) pellets at different temperatures. The novel results indicated that (1) the average size of Gd211 particles in PSPP is monotonically increasing with increasing the sintering temperature up to 1200°C. (2) With increasing the sintering temperature from 950 to 1200°C, the porous ratio and the density of the PSPP are, respectively, monotonically decreasing and increasing. Furthermore when the sintering temperature is less than 1000°C, the porous ratio is higher and the density is lower than the values of the pressed pellets. (3) With increasing the sintering temperature, the average size of Gd211 particles in the GdBCO bulk first decreases and then increases. In addition, the smallest Gd211 particles are obtained in the sample sintered at 1050°C. (4) The maximum levitation force is obtained in the sample sintered at 1150°C with a relatively larger size of Gd211 particles and lower porosity. This result is significant when fabricating high-quality GdBCO bulk superconductors by controlling the porosity, Gd211 particle size, and their distribution characteristic.

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Preparation of high quality single domain SmBCO bulks by modified TSIG method in air with new solid phase of Sm2O3 + xBaCuO2

Cited by 5 publications

References 18 publications

The Processing and Properties of Bulk (Re)bco High Temperature Superconductors: Current Status and Future Perspectives

The Processing and Properties of Bulk (Re)bco High Temperature Superconductors: Current Status and Future Perspectives

Current Status of High Temperature Superconducting Materials and their Various Applications

Effects of Gd211 Particles Characteristic in the Precursor Pellets on the Levitation Force of Single‐Domain GdBCO Bulks Prepared by the Gd + 011 TSIG Method

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