Microstructural characterization of copper coatings for used nuclear fuel containers

废旧核燃料容器铜涂层的微观结构表征

• 批准号: 513706-2017
• 负责人: Erb, Uwe
• 金额: $ 4.99万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618400
• 关键词: Microstructural; characterization; copper; coatings; used

Canada's plan for the final storage of used nuclear fuel from the fleet of CANDU reactors operated across Canada is a Deep Geological Repository (DGR). Responsible for designing and implementing the DGR is the Nuclear Waste Management Organization (NWMO), a not-for-profit organization reporting to the Minister of Natural Resources of Canada. NWMO is now implementing the Adaptive Phase Management (APM) plan for final nuclear waste storage. One of the most critical components in the waste storage, the Used Fuel Container (UFC), is currently under development by NWMO. This container consists of a high strength steel vessel coated with copper for long-term (e.g. 1 million years) corrosion resistance. NWMO has identified two coating technologies for the application process: electrodeposited (ED) copper and cold-spray (CS) copper. Currently NWMO has several research programs which assess the long-term corrosion and mechanical properties of ED and CS-copper. The research proposed here on a deep microstructural characterization of ED and CS copper is in support of developing a comprehensive understanding of microstructure-corrosion/mechanical property relationships for these materials. For this study, NWMO will provide the University of Toronto with several sections of UFC material cut from full-sized prototypes fabricated by NWMO in collaboration with their partners Integran Technologies Inc., Mississauga, ON and the National Research Council of Canada, Boucherville, QC. At the University state-of-the art electron microscopy characterization tools will be used to reveal the microstructural features that potentially could affect the long-term corrosion performance of the UFC. This research will provide training opportunities for 4 graduate students and 1 postdoctoral fellow. It will contribute significantly to the advancement of knowledge in the field of copper coating microstructures and their effects on performance as an engineered corrosion barrier for used nuclear fuel containers.

加拿大在整个加拿大运营的Candu反应堆机队最终存储最终储存的二手燃料的计划是深层储存库（DGR）。负责设计和实施DGR的是核废料管理组织（NWMO），这是一个向加拿大自然资源部长报告的非营利组织。 NWMO现在正在实施最终核废料存储的自适应阶段管理（APM）计划。 NWMO目前正在开发废物存储中最关键的组件之一，即用过的燃料容器（UFC）。该容器由长期（例如100万年）耐腐蚀性的高强度钢容器组成。 NWMO已确定了两种施用过程的涂料技术：电沉积（ED）铜和冷喷雾（CS）铜。目前，NWMO拥有多个研究计划，可评估ED和CS-COPPER的长期腐蚀和机械性能。这里提出的关于ED和CS铜的深度微观结构表征的研究支持了对这些材料的微结构 - 腐蚀/机械性能关系的全面理解。在这项研究中，NWMO将为多伦多大学提供由NWMO与他们的合作伙伴Integran Technologies Inc.合作制造的全尺寸原型的UFC材料，ON和加拿大国家研究委员会，Boucherville，QC。在大学，最先进的电子显微镜特征将用于揭示可能影响UFC长期腐蚀性能的显微结构特征。这项研究将为4名研究生和1名博士后研究员提供培训机会。它将为铜涂层微观结构领域的知识发展及其对二手核燃料容器的工程腐蚀屏障的影响做出重大贡献。