Product Description

Hafnium is a chemical element with the symbol Hf and atomic number *2. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in zirconium minerals. Hafnium was found by Dirk Coster and Georg von Hevesy in ***3 in Copenhagen, Denmark, and named Hafnia after the Latin name for "Copenhagen".

Hafnium is used in filaments, electrodes, and some semiconductor fabrication processes for integrated circuits at *5 nm and smaller feature lengths. Its large neutron capture cross-section makes hafnium a good material for neutron absorption in control rods in nuclear power plants. Some superalloys used for special applications contain hafnium in combination with niobium, titanium, or tungsten.