| Abstract Scope |
Molten salt reactors (MSRs), pivotal in Generation IV nuclear technologies, enhance safety with features like no loss-of-coolant accidents and low-pressure operations. A significant challenge for
MSR deployment is the corrosion vulnerability of conventional structural alloys like austenitic stainless steels in harsh environments involving molten salts and low-melting-point fission
products. To address this, we introduce a Ni-based corrosion barrier suitable for direct application to stainless steels such as 304 or 316L. This coating effectively protects against molten salts, impurities, solid fission products, and chromium diffusion while preserving integrity at high temperatures. Our solution leverages existing steel types, enhancing moisture and impurity
control, as well as erosion and radiation resistance, thus maintaining cost-effectiveness. We will discuss advancements in refining barrier designs and their long-term protective capabilities
against fluoride salts (e.g., FLiNaK), managing thermal cycling, and radiation up to 650°C, crucial for protecting heat exchangers in MSR environments. |