Nuclear fusion is one of the very few options promising to solve the currently looming energy crisis, and the materials technology plays a critical role in determining the technological realization of the fusion power source. Plasma Facing Materials (PFMs) is one of the key materials in ITER which will work in harsh conditions, including complex thermal, mechanical, and chemical loads as well as strong irradiation.

Molybdenum disilicide is an inorganic compound, which is a gray metallic solid, with the chemical formula of MoSi₂. It is soluble in nitric acid and hydrofluoric acid while insoluble in most acids. The radii of the two kinds of atoms differ from each other, the electronegativity is relatively close, and they host similar properties to ceramics and metals.

Tungsten Trioxide is a semiconductor material with great development potential. In recent years, scientific research achievements have been made in the fields of new energy batteries, electrochromic devices, photocatalysts and supercapacitors. Industry flexibly chooses preparation methods according to different needs, among which precipitation method is a popular preparation method of Tungsten Trioxide.