Energy and the Physical Sciences: Novel multi-seeded bulk superconductors for sustainable engineering applications

能源与物理科学：用于可持续工程应用的新型多晶种体超导体

• 批准号: EP/K02910X/1
• 负责人: David Cardwell
• 金额: $ 60.21万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2013
• 资助国家: 英国
• 起止时间: 2013 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FK02910X%2F1
• 关键词: Energy; Physical; Sciences; Novel; multi

The ability to generate strong and stable magnetic fields is a critical enabling technology for a broad range of sustainable engineering applications. Almost invariably, more compact field sources and higher magnetic field densities lead directly to more efficient and cost effective devices. One example of this can be found in the widespread applications of small, high power DC electric motors, which have proliferated since the development of the cheap high energy density family of NdFeB materials in the 1980s. Wire-wound superconducting magnets, on the other hand, may offer the potential to generate large magnetic fields, but they are extremely expensive and are difficult to manufacture. A cheaper, simpler and more robust option is the use of magnetised bulk superconductors. The (RE)BCO (where RE = rare earth element such as Y, Nd, Sm, Gd, etc.) family of bulk, melt processed high temperature superconductors (HTS), in particular, is the subject of extensive world-wide developmental research. Bulk HTS materials offer considerable potential to both improve the performance of existing devices that incorporate permanent magnets and to develop new, high field and sustainable energy storage applications, in particular. Indeed, these materials represent a direct link between the physical sciences and the development of sustainable applications in the energy needs sector that will be fundamental to growth of the UK economy in the short to medium term.A number of important scientific and technical challenges to the incorporation of (RE)BCO bulk superconducting materials into practical engineering applications remain. These include improving process efficiency, sample properties, yield, reducing the cost of raw materials, recycling, processing larger samples with conformal geometries, development of a practical magnetisation process and the development of bespoke cryogenic systems for specific applications.The main objective of this proposal is to address and overcome the critical aspects of these challenges to gain a fundamental understanding of the single grain growth process. This will enable the cost-effective processing of (RE)BCO materials with conformal geometries that will be fundamental to their application in a range of sustainable engineering devices within the energy sector and healthcare industry. Specific emphasis of the project will be placed on the development of an effective recycling process to enable a new secondary bulk sample source for low to medium field applications, the development of a novel multi-seeding technique for fabricating large samples of conformal geometry and the development of a novel fabrication process based on a graded composition to produce bulk samples with homogeneous superconducting properties throughout the bulk microstructure.

产生强大稳定磁场的能力是针对广泛的可持续工程应用程序的重要促进技术。几乎总是紧凑的场源和较高的磁场密度直接导致更有效，更具成本效益的设备。一个例子可以在小型高功率直流电动机的广泛应用中找到，自1980年代NDFEB材料的廉价高能密度家族以来，这些电动机已经扩散。另一方面，电线绕线超导磁铁可能会提供产生大磁场的潜力，但它们非常昂贵且难以制造。使用磁化的散装超导体的便宜，更简单，更健壮的选择。 （re）BCO（其中RE =稀土元素，例如Y，ND，SM，GD等）散装家族，尤其是融化的高温超导体（HTS）是全球广泛的发展研究的主题。散装HTS材料既可以提高结合永久磁铁的现有设备的性能，又要开发新的，高场和可持续的储能应用，尤其是。实际上，这些材料代表了物理科学与能源需求领域可持续应用的发展之间的直接联系，这将是在短期至中期内对英国经济增长的基础。将（RE）BCO BULK超导材料纳入实践工程应用中的重要科学和技术挑战数量。这些包括提高工艺效率，样本特性，降低原材料的成本，回收，处理具有子质几何形状的较大样本，开发实用磁化过程以及用于特定应用的定制低温系统的开发。该建议的主要目标是解决这些挑战的关键方面，以使这些挑战的过程成为单一的差异，从而获得了基础疗法的关键方面。这将使（重新）BCO材料具有相同的几何形状，这将是其在能源领域和医疗保健行业内的一系列可持续工程设备中的应用。该项目的具体强调将放在有效的回收过程上，以使新的次要体积样品源用于中等场能应用，开发一种新型的多种子技术，用于制造大型保形几何样品，并基于制造新型制造工艺的新型制造过程，以产生具有同质性构成的分级组合物，并构成构造构造的构造。

项目成果

Flux jump-assisted pulsed field magnetisation of high-$J_c$ bulk high-temperature superconductors

高$J_c$块状高温超导体的磁通跳跃辅助脉冲场磁化

• DOI: 10.17863/cam.6594
• 发表时间: 2016
• 作者: Ainslie, MD

Buffer Pellets for High-Yield, Top-Seeded Melt Growth of Large Grain Y-Ba-Cu-O Superconductors

• DOI: 10.1021/cg501813y
• 发表时间: 2015-03-01
• 期刊: CRYSTAL GROWTH & DESIGN
• 影响因子: 3.8
• 作者: Kumar, Namburi Devendra;Shi, Yunhua;Cardwell, David A.
• 通讯作者: Cardwell, David A.

Improvements in the processing of large grain, bulk Y-Ba-Cu-O superconductors via the use of additional liquid phase

• DOI: 10.1088/0953-2048/30/1/015017
• 发表时间: 2017-01-01
• 期刊: SUPERCONDUCTOR SCIENCE & TECHNOLOGY
• 影响因子: 3.6
• 作者: Congreve, Jasmin V. J.;Shi, Yunhua;Cardwell, David A.
• 通讯作者: Cardwell, David A.

Reliable single grain growth of (RE)BCO bulk superconductors with enhanced superconducting properties

• DOI: 10.1088/1361-6668/ab627d
• 发表时间: 2020-01-01
• 期刊: SUPERCONDUCTOR SCIENCE & TECHNOLOGY
• 影响因子: 3.6
• 作者: Cardwell, David A.;Shi, Yunhua;Numburi, Devendra K.
• 通讯作者: Numburi, Devendra K.