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.

加拿大计划将加拿大各地运行的 CANDU 反应堆中使用过的核燃料进行最终储存，该计划是建立一个深层地质储存库 (DGR)。负责设计和实施 DGR 的是核废物管理组织 (NWMO)，它是一个向加拿大自然资源部长报告的非营利组织。 NWMO 目前正在实施最终核废料储存的适应性阶段管理（APM）计划。 NWMO 目前正在开发废燃料容器 (UFC)，这是废物储存中最关键的组件之一。该容器由涂有铜的高强度钢容器组成，具有长期（例如 100 万年）的耐腐蚀性。 NWMO 已经确定了两种适用于应用过程的涂层技术：电沉积（ED）铜和冷喷涂（CS）铜。目前，NWMO 有多个研究项目评估 ED 和 CS 铜的长期腐蚀和机械性能。本文提出的关于 ED 和 CS 铜的深层微观结构表征的研究有助于全面了解这些材料的微观结构-腐蚀/机械性能关系。在这项研究中，NWMO 将向多伦多大学提供几段 UFC 材料，这些材料是由 NWMO 与其合作伙伴 Integran Technologies Inc.（安大略省密西沙加市）和加拿大国家研究委员会（魁北克省 Boucherville 市）合作制造的全尺寸原型切割而成。该大学将使用最先进的电子显微镜表征工具来揭示可能影响 UFC 长期腐蚀性能的微观结构特征。本研究将为4名研究生和1名博士后提供培养机会。它将极大地促进铜涂层微观结构领域的知识进步及其作为废旧核燃料容器的工程腐蚀屏障对性能的影响。