Hafnium has good corrosion resistance, is not easily corroded by general acid-base aqueous solutions, and is easily soluble in hydrofluoric acid to form fluorine complexes; Hafnium has a large thermal neutron capture cross-section, and it has outstanding nuclear energy, which is Indispensable rare materials for the development of the nuclear energy industry. Hafnium has fast heat absorption and heat release properties (1 time faster than zirconium and titanium), so it can be used as a structural material for jet engines and missiles. The high melting point of hafnium allows it to be used as a blade for turbojet aircraft and in freezing point pressure jet engines. It can also be used to make valves, nozzles and other high temperature parts.
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