Investigation and characterisation of material degradation mechanisms across extremely hot corrosion interfaces in molten salt.

熔盐中极热腐蚀界面材料降解机制的研究和表征。

• 批准号: 2283986
• 金额: --
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2283986
• 关键词: Investigation; characterisation; material; degradation; mechanisms

This project aims to investigate the corrosion degradation mechanisms of conventional corrosion resistant alloy (CRA) and Cr-alloyed steel materials used with in molten salts (Salt melts. CRAs used in these applications are exposed to salts at melting points (~200-250 degrees C) and below boiling points (~600-1000 degrees C) temperatures. The objective of this project is to develop an understanding of corrosion mechanisms at salt-metal interface and how these mechanisms are interlinked in their evolution and correlated to changes in alloy properties and integrity of passive layers in these environments over their design life.Molten salts is currently being used as heat transfer and energy storage medium in Concentrated Solar Power (CSP) plants and as coolants in Generation IV Molten Salts Nuclear Reactors (MSR). In these applications most metals are exposed to highly ionic salt melts at extremely high temperatures. Improve understanding and characterisation of the corrosion degradation mechanism in CSP and MSR systems will help towards mitigating corrosion in these systems through development of new generation of materials, coatings and chemical solutions.

本计画旨在探讨传统耐蚀合金及铬合金钢材料在熔盐中之腐蚀劣化机制。在这些应用中使用的CRA暴露于熔点（~200-250摄氏度）和沸点（~600-1000摄氏度）以下温度的盐。本项目的目标是了解盐-金属界面的腐蚀机理，以及这些机理在其演变过程中是如何相互联系的，以及这些机理与合金性能变化和钝化层在这些环境中的完整性在其设计寿命内的相关性。熔盐目前被用作聚光太阳能发电（CSP）中的传热和储能介质。第四代熔盐核反应堆（MSR）中的冷却剂。在这些应用中，大多数金属在极高的温度下暴露于高离子盐熔体。提高对CSP和MSR系统中腐蚀降解机制的理解和表征将有助于通过开发新一代材料、涂层和化学解决方案来减轻这些系统中的腐蚀。