Recent progress on batch processed large size LRE-123 bulk superconductors using a novel thin film Nd-123 seed

Muralidhar, M.; Suzuki, Kohei; Fukumoto, Yusuke; Ishihara, Atsushi; Tomita, Masaru

doi:10.1016/j.physc.2012.03.013

Cited by 14 publications

(6 citation statements)

References 17 publications

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“…The diagram of thermal management cycle of the fuel for MR2 is shown in Figure 45 where the heat transfer considered is mainly between the inner wall of the engine room and the outside air, between the inner wall of the engine room and the fuel tank, between the equipment and the fuel tank, between the equipment and the Dual Mode Ramjet, DMR [167], and between the DMR and the outside air. In addition, the heat fluxes of DMR and Liquid Rocket Engine, LRE [168] were also taken into account. It is worth noting that helium was used as a closed-loop system for the intermediate fluid in this cycle.…”

Section: Flight Conditionmentioning

confidence: 99%

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

et al. 2019

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Combined-cycle engine is a potential propulsion system for hypersonic aircraft. To ensure long-term, normal operation of combined-cycle engine under the harsh environment of high thermal load, it is of great significance to study the thermal protection and management of the propulsion system. In this study, the objective and development status of thermal protection and thermal management systems for the combined-cycle propulsion system were described. The latest research progresses of thermal protection, thermal barrier coating, and thermal management system of the combined-cycle propulsion system were summarized. Moreover, the problems and shortcoming in current researches were summarized. In addition, a prospect for the future development of thermal protection and management of the combined-cycle propulsion system was presented, pointing out a direction of great value and vital research significance to thermal protection and management of the combined-cycle propulsion system.

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Section: Flight Conditionmentioning

confidence: 99%

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

et al. 2019

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“…As potentially applicable cryomagnets, the world records in the trapped field of 17.24 T at 29 K for YBCO, and more recently 17.6 T at 26 K for GdBCO have been successfully achieved . Based on the current top‐seeded melt‐growth (TSMG) technique with the use of high thermal stability film, RE123 bulks can be batch‐produced for meeting the application requirements. However, factors like temperature fluctuation inside furnace, wrong orientation of the seed, and a nonoptimized process give rise to a high growth failure rate of approximately 20%, since these failed bulks contain expensive matters, such as Ag, Pt, and RE, various recycling processes were developed to regrow them …”

Section: Introductionmentioning

confidence: 99%

Towards a sustainable fabrication of cryomagnets: Melting‐driving approaches for recycling failed REBa₂Cu₃O_x bulks

et al. 2018

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Recycling failed REBa2Cu3Ox (RE123 or REBCO, RE: rare earth elements) bulks is a matter of significant importance in the manufacture of superconducting cryomagnets for practical applications. However, bulks with high solid fraction and high Tp (peritectic temperature) are difficult to recycle. In order to solve this problem, we first gave a comprehensive classification of failed bulks based on their macrostructures, determined by the volume ratio between poly‐crystalline grains (PCG) and solidified liquid phase (SLP) of the bulks, which is positively correlated with the difficulty level of melting the bulks. Furthermore, particularly for hard‐to‐melt samples, we developed a novel melting‐driving recycling process, in which an additional step, high‐temperature remelting plus quenching, was employed before a normal regrowing step. As a result, we succeeded in recycling the failed SmBCO bulks featuring high Tp and structures of fully‐grown PCG, which demonstrated comparable superconducting performance to ones prepared by normal top‐seeded melt‐growth. This study opens a new direction of recycling all kinds of failed RE123 bulks and other ceramic materials, making their industrial applications more sustainable and economic.

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“…Another promising compound is the SmBa 2 Cu 3 O 7-d (Sm-123) superconductor ceramic. Due to advances in synthesis procedures of that compound, many researchers have produced align grains to improve both T c and critical current density (J c ) [18][19][20][21][22] . The results indicated an upgrade of development and quality control of Sm-123 ceramic.…”

Section: Introductionmentioning

confidence: 99%

Development and test of a small resistive fault current limiting device based on Hg, Re-1223 and Sm-123 ceramics

et al. 2014

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Recent progress on batch processed large size LRE-123 bulk superconductors using a novel thin film Nd-123 seed

Cited by 14 publications

References 17 publications

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

Towards a sustainable fabrication of cryomagnets: Melting‐driving approaches for recycling failed REBa₂Cu₃O_x bulks

Development and test of a small resistive fault current limiting device based on Hg, Re-1223 and Sm-123 ceramics

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Recent progress on batch processed large size LRE-123 bulk superconductors using a novel thin film Nd-123 seed

Cited by 14 publications

References 17 publications

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

Towards a sustainable fabrication of cryomagnets: Melting‐driving approaches for recycling failed REBa2Cu3Ox bulks

Development and test of a small resistive fault current limiting device based on Hg, Re-1223 and Sm-123 ceramics

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Towards a sustainable fabrication of cryomagnets: Melting‐driving approaches for recycling failed REBa₂Cu₃O_x bulks