A review entitled "Advancein and Prospect of Moderator Materials(Hydride) for Space Nuclear Reactors" was published in the "International Journal of Energy Research,"
Titanium chromium niobium tantalum quaternary medium-entropy MAX phase ceramic materials as new ceramic materials have attracted widespread attention in the field of materials science.
Tungsten, titanium, tritium, osmium, iron, steel, zirconium, chromium, vanadium, tantalum. These metals have very high hardness and are also very rare.