| Abstract Scope |
One of the most critical challenges for fusion reactors toward commercialization is economic efficiency. To operate the reactor with high thermal efficiency, high-temperature blanket operation using liquid metals or molten salts as tritium breeders and/or coolants has been investigated. In these blanket concepts, tritium permeation through structural materials, corrosion of structural materials, and magneto-hydrodynamic pressure drop of liquid metal flow are issues to be addressed. Functional coating is one of the promising solutions to mitigate tritium permeation, corrosion, and generation of eddy current in liquid metals and metal components simultaneously. However, research over the past two decades has shown that it is challenging for single-layer ceramic coatings to fulfill all of these functions. Also, recent studies on multi-layer coatings proved higher permeation reduction and corrosion protection performances. In this presentation, the development of ceramic-metal joint coatings is showcased and discussed toward the actual use of the coatings in fusion reactors. |