Tantalum

Pure tantalum is characterised by its high melting point, its exceptional resistance to chemical attack, its capacity to store and release electrical charge and its corrosion resistance. These unique chemical properties have led to its widespread use in the electronics and aeronautics industries and in the making of surgical appliances.

The main use of tantalum is in the manufacture of electrolytic capacitors, used in mobile phones, computers and automotive electronics. Additional uses are found in super alloys for turbine engines, precision optical lenses and high temperature applications.

Key uses for tantalum

Source: Tantalum - Niobium International Study Centre

Aluminium and ceramics may be used as a substitute for tantalum, but normally at the expense of performance. Niobium is used to a very limited extent in ceramic capacitors for electronics, whereas its primary use is as an alloying element to strengthen high-strength low-alloy steels. The use of niobium as an alternative to tantalum in capacitors is still under evaluation.