One of the important applications of tantalum is its use in the fabrication of tantalum electrolytic capacitors. By anodic oxidation it is possible to obtain very stable, adherent and highly insulating oxide layers.
These do not lose their good dielectric properties even under extreme operating conditions. Tantalum wires are used as lead-ins for tantalum capacitors.

Tantalum is also used for the production of highly charged electrodes in electron tubes, for example, anodes used in transmitter tubes. A further advantage of tantalum for the construction of electron tubes is its excellent getter properties (absorption of residual gases in evacuated tubes).

Tantalum has favourable high-temperature properties such as high melting point, high thermal strength and low vapour pressure even at extremely high temperatures. It is therefore a very useful material for the construction of high temperature vacuum furnaces, and in particular for heating elements, radiation shields, racks and other parts.

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