Hafnium

Hafnium

Hafnium is a chemical element with the symbol Hf and atomic number 72. It is a lustrous, silvery-gray metal that belongs to the group of transition metals. Hafnium is a relatively rare element, with an abundance of around 3 parts per million in the Earth's crust. It was discovered in 1923 by the Danish chemist Dirk Coster and the Hungarian physicist George de Hevesy, who named it after the Latin name for Copenhagen, Hafnia. Hafnium has a high melting point and is very resistant to corrosion and wear. It is commonly used as an alloying agent in the production of superalloys, which are used in high-temperature applications such as jet engines and gas turbines. Hafnium is also used in nuclear reactors as a control rod material due to its ability to absorb neutrons. In addition, hafnium is used in the production of vacuum tubes and as a getter in vacuum systems. Hafnium has a number of isotopes, with Hf-174 being the most abundant. Hafnium is also notable for its similarity to zirconium, with which it is often found in nature. In fact, hafnium is typically extracted from zirconium minerals using a process known as the Kroll process. Overall, hafnium is a versatile and important element that has a range of industrial applications. Its unique properties make it a valuable material for use in high-temperature and nuclear applications.

chemical element, transition metal, superalloys, nuclear reactors, zirconium

— Jonathan Anderson

CITATION : "Jonathan Anderson. 'Hafnium.' Design+Encyclopedia. https://design-encyclopedia.com/define/hafnium?E=321430 (Accessed on October 14, 2026)"