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

本项目旨在研究常规耐腐蚀合金（CRA）和cr合金钢材料在熔盐（盐熔体）中的腐蚀降解机理。在这些应用中使用的cra暴露于熔点（~200-250℃）和低于沸点（~600-1000℃）的盐中。该项目的目标是了解盐-金属界面的腐蚀机制，以及这些机制在其演变过程中如何相互联系，以及在这些环境中被动层的性能和完整性的变化与设计寿命的关系。熔盐目前被用作聚光太阳能（CSP）发电厂的传热和储能介质，以及第四代熔盐核反应堆（MSR）的冷却剂。在这些应用中，大多数金属都暴露在极高温度下的高离子盐熔体中。提高对CSP和MSR系统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的腐蚀。

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.