History of evolution of molybdenum products - Heanjia Super-metals Co., Ltd.

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History of evolution of molybdenum products

Molybdenum is extracted from the primary ore of Molybdenite that is earlier called as molybdena. The molybdena was doubted with and usually considered as it was graphite since molybdenite can also be used to give black color to the material and used as solid lubricant similar to graphite. When the molybdena ore was differentiated from graphite, it was doubted again to be similar with lead ore called as galena.

However net purposeful alloy formation of molybdenum with steel in 14^th century has been introduced in Japan. This technique hadn't become so popular and lost so early. In 1754, in the west side of earth, Bengt Andersson Qvist analyzed the molybdenite and found that it didn't include lead and it was not similar to lead ore (galena).

In 1778, a Swedish chemist declared molybdena a completely isolated from graphite and galena. Later on another chemist moved further and considered molybdena as an ore of new metal called as molybdenum that can be extracted from the ore. In 1781, Mr. Peter Jacob Hjelm extracted molybdenum by utilizing carbon and linseed oil.

After hundred years of the mlybdenum's separation, it was not found capable to be using for industrial purpose because of its rareness and tough to obtain metal in the pure form from its ore. Also the techniques of molybdenum extraction were not quite successful.Thereafter steel alloys consisting of molybdenum promised in enhancement in its hardness though attempts to produce steel comprising of molybdenum on the commercial scale were hindered due to inconsistent results and the brittle nature of alloy as well as its crystallization. William D Coolidge has registered a patent for providing ductile nature to molybdenum that has made the molybdenum wire to use a heating element under the high temperature conditions and help the incandescent bulbs made of tungsten filaments and decomposition needs the isolation of molybdenum physically or placed in an inert gas. Frank E Elmore in 1913 had discovered the floatation process to reclaim the molybdenite from the ores.

The actual demand of molybdenum was accelerated during the first world war when it began using in armor plating and replacement of tungsten in the large speed steels. Few British tanks were saved by using manganese steel plating of width 75 mm though it was inconsistent so it was replaced with the molybdenum steel plating of width 25 mm that has provided high speed with higher maneuverability and improved sealing of internal material. The German manufacturers have also chosen molybdenum containing steel to use in the load artillery. It was because the conventional steel started melting at the large heat ignited by the sufficient gunpowder to install a shell of one ton mass. After the war, the demand decelerated until the advancement in the metallurgical process of molybdenum wire to use it as a significant replacement for tungsten in the steel alloys.

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