Molybdenum element
Discovery: Elm Date of discovery:1782 Discovery process: in 1782, erm, sweden, sealed with a mixture of charcoal and molybdate mixed with flaxseed oil to get molybdenum. Element description: silver white metal, hard and tough. density 10.2 g/cm3. melting point 2610°C. boiling point of 5560°C. compound price 2,4 and 6 with a stable price of 6. first ionization energy 7.099 electron volts. free from air erosion at room temperature. No reaction with hydrochloric acid or hydrofluoric acid. Element source: The main mineral is molybdenum ore (MoS2). The molybdenum ore was calcined into molybdenum trioxide and then reduced by hot reduction of hydrogen or aluminum. Elemental uses Pure molybdenum wire is used in high temperature electric furnace; molybdenum sheet is used to make radio equipment and X-ray equipment; adding molybdenum in alloy steel can improve elastic limit, corrosion resistance and maintain permanent magnetic properties. Molybdenum is one of the seven micronutrients needed for plant growth and development, without which plants cannot survive. Animals and fish, like plants, need molybdenum. Molybdenum is consumed mainly in the iron and steel industry. More than 80% of molybdenum in the industrially developed countries is used as an additive element in steel. Only about 20% of molybdenum is used to produce metal molybdenum, superalloys and special alloys, chemicals and so on.
