molybdenum introduction
.Molybdenum
does not occur natively and molybdenum is principally obtained from molybdenite. Molybdenum is also a by-product of copper and tungsten mining operations. Molybdenum powder is produced by the hydrogen reduction of purified molybdic trioxide or ammonium molybdate.Molybdenum is silvery white and it is very hard. But molybdenum is softer and more ductile than tungsten. Molybdenum has a high elastic modulus and a higher melting point. Molybdenum is a valuable alloying agent, because molybdenum contributes to the hardenability and toughness of quenched and tempered steels. It also improves the strength of steel at high temperature.
Molybdenum can be oxidized at elevated temperatures. Recently, molybdenum is applied as electrodes for electrically heated glass furnaces and forehearths. Molybdenum is also used in nuclear energy applications and for missile and aircraft parts. Molybdenum is valuable as catalyst in the refining of petroleum. What’s more, molybdenum is also used as filament material in electronic and electrical applications.
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