Thermal spray coatings for fusion applications - Review

Thermonuclear fusion is a potential source of cleaner and safer energy for the future. Its technological realization depends on the development of materials able to survive and function in extreme conditions. This article reviews the applications of thermally sprayed coatings for fusion reactor materials. First, the principle and purpose of fusion is briefly introduced, and technological objectives are mentioned. Material-environment interactions are summarized, together with materials requirements and the role of coatings. Then, specific applications-e.g., the plasma facing components-are reviewed, focusing on application issues as well as issues related to thermal spray processing and specific properties of the respective materials. An overview of specific materials testing methods is also provided.