PhysLink.com Logo

Ti - Titanium

Titanium

 Titanium 
Ti
Atomic Number: 22
Atomic Weight: 47.867
Element Type: Transition Metal
Crystal Structure: Hexagonal
Melting Point: 1668.0°C = 3034.4°F = 1941.15 K
Boiling Point: 3287.0°C = 5948.6°F = 3560.15 K
Critical Temp: °C = °F = K
Atomic Radius: 2.0 Å (Å = Angstrom = 10-10 m)
Covalent Radius: 1.32 Å
Electronegativity: 1.54

History

(L. titans, the first sons of the Earth, mythology)

Discovered by Gregor in 1791; named by Klaproth in 1795. Impure titanium was preparedby Nilson and Pettersson in 1887; however, the pure metal (99.9%) was not made until 1910by Hunter by heating TiCl4with sodium in a steel bomb.


Sources

Titanium is present in meteorites and in the sun. Rocks obtained during the Apollo 17lunar mission showed presence of 12.1% TiO2 and rocks obtained during earlier Apollomissions show lower percentages.

Titanium oxide bands are prominent in the spectra of M-type stars. The element is theninth most abundant in the crust of the earth. Titanium is almost always present inigneous rocks and in the sediments derived from them.

It occurs in the minerals rutile, ilmenite, and sphene, and is present in titanates andin many iron ores. Titanium is present in the ash of coal, in plants, and in the humanbody.

The metal was a laboratory curiosity until Kroll, in 1946, showed that titanium couldbe produced commercially by reducing titanium tetrachloride with magnesium. This method is largely used for producingthe metal today. The metal can be purified by decomposing the iodide.







Support US

Our server costs have gone up and our advertising revenue has gone down. You do the math! If you find our site useful, consider donating to keep us going. Thanks!


Science Quote

'He who finds a thought that lets us even a little deeper into the eternal mystery of nature has been granted great grace.'

Albert Einstein
(1879-1955)





All rights reserved. © Copyright '1995-'2018 PhysLink.com   Privacy Statement | Cookie Policy