Evolution of nanostructure and properties in nuclear graphite with irradiation damage

辐照损伤下核石墨纳米结构和性能的演变

• 批准号: 2889672
• 金额: --
• 依托单位: University of Bristol
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2889672
• 关键词: Evolution; nanostructure; properties; nuclear; graphite

There are many different grades of graphite, for instance, the UK AGRs are using medium grained Gilsocarbon graphite but they are no longer reproducible and for GenIV designs, new graphite materials have to be designed and produced but many of them have finder grains. The question is how well do these fine grain graphite work and will we be able to directly apply our accumulated knowledge on historical grades? As the operation conditions get harsher can we simply linearly extrapolate the known envelope? To answer these questions and to support the long-term safe operation of our nuclear fission reactors as well as underpin the exploration of physics science in general, we need to foster next generation of experts in nuclear graphite.In this project, we will not only provide you the opportunity to work with world-class graphite experts, access to unique facilities but also we will have your next stage career development in mind to strongly support your skills development. Our primary aim is to enable your success and grow into an expert in nuclear graphite to contribute to nuclear graphite community internationally.Neutron and proton irradiated samples have been provided by UK National Nuclear Laboratory, EDF Energy, UK Idaho National Laboratory and US Fermi Lab, and they are stored at the University of Bristol and the UK Atomic Energy Agency (Culham) for your project. You will use a range of techniques including X-ray diffraction/tomography, Focused ion beam tomography, Raman spectroscopy and transmission electron microscopy to study the evolution of the nano-/microstructures of the materials and correlate them to the local thermal and mechanical properties.

有许多不同等级的石墨，例如，英国AGR使用中等粒度的Gilsocarbon石墨，但它们不再是可再生的，对于GenIV设计，必须设计和生产新的石墨材料，但其中许多都有finder grains。问题是这些细颗粒石墨的工作效果如何，我们是否能够将我们积累的知识直接应用于历史等级？当操作条件变得更苛刻时，我们能简单地线性外推已知的包络吗？为了回答这些问题，并支持我们的核裂变反应堆的长期安全运行，以及支持物理科学的探索，我们需要培养下一代核石墨专家。在这个项目中，我们不仅将为您提供与世界级石墨专家合作的机会，我们将为您的下一阶段职业发展提供支持，以大力支持您的技能发展。我们的主要目标是使您成功并成长为核石墨专家，为国际核石墨社区做出贡献。中子和质子辐照样品已由英国国家核实验室，EDF Energy，英国爱达荷州国家实验室和美国费米实验室提供，并储存在布里斯托大学和英国原子能机构（卡勒姆）为您的项目。您将使用一系列技术，包括X射线衍射/断层扫描，聚焦离子束断层扫描，拉曼光谱和透射电子显微镜，以研究材料的纳米/微观结构的演变，并将其与局部热性能和机械性能相关联。