The chemical element zirconium
Circonium, also known as zirconium, is a very corrosion-resistant metal of the titanium group; it even occurs in small amounts in the human organism.
An important use of zirconium is in the shells of uranium fuel elements in nuclear power plants. This zircaloy alloy consists of approx. 90% zirconium and small amounts of tin, iron, chromium or nickel. Zirconium is also used as a material for chemical plants, especially for special parts such as valves, pumps, pipes and heat exchangers. Zirconium is much less expensive than tantalum, which is even more resistant, but it is not so widely used.
In the form of its oxides it embellishes many a smile (dental ceramics) & jewellery (zirconia).