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Titanium By Evan The Reverend William Gregor in 1791 who was interested in minerals discovered titanium He recognized the presence of a new element now known as titanium in menachanite a mineral named after Menaccan in Cornwall England Several years later the element was rediscovered in the ore rutile by a German chemist Klaproth The pure elemental metal was not made until 1910 by Matthew A Hunter who heated TiCl4 together with sodium in a steel bomb at 700-800C Titanium is used for alloys with aluminum molybdenum manganese iron and other metals These alloys of titanium are used principally in the aerospace industry for both airframes and engines where lightweight strength and ability to withstand extremes of temperature are important Titanium is as strong as steel but much lighter It is twice as strong as aluminum It is nearly as resistant to corrosion as platinum Titanium is a component of joint replacement parts including hip ball and sockets It has excellent resistance to seawater and is used for propeller shafts rigging and other parts of ships exposed to salt water A titanium anode coated with platinum provides cathodic protection from corrosion by salt water Titanium paint is an excellent reflector of infrared radiation and is extensively used in solar observatories where heat causes poor viewing conditions Pure titanium dioxide is relatively clear and has an extremely high index of refraction with an optical dispersion higher than diamond It is produced artificially for use as a gemstone but it is relatively soft Star sapphires and rubies exhibit their asterism as a result of the presence of TiO2 The dioxide is used extensively for paint as it is permanent and has good covering power Titanium oxide pigment accounts for the largest use of the element Titanium symbol Ti silver-white metallic element with an atomic number of 22 and an atomic weight of 479 Titanium is one of the transition elements of the periodic table
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