What is Molybdenum Mo?
Molybdenum, with the chemical symbol Mo and atomic number 42, is a transition metal element.
Molybdenum has a high melting point and ranks sixth in nature. It is called refractory metal. The density of molybdenum is 10.23g/cm3, about half that of tungsten (19.36g/cm3). The thermal expansion coefficient of molybdenum is low. Molybdenum has higher thermal conductivity. The hardness of molybdenum is higher, the Mohs hardness is 5~5.5. The evaporation heat of molybdenum at the boiling point is 594kJ/mol. The melting heat is 27.6 ±2.9kJ/mol. The heat of lift at 25℃ is 659kJ/mol. Molybdenum is stable in air or water at room or moderate temperatures.
What is Molybdenum Powder Used For?
Molybdenum is consumed heavily in steel and is mainly used in the production of alloy steel, stainless steel, tool steel, high-speed steel, cast iron and rolls.
Molybdenum as an alloying element can improve the strength and toughness of steel. Improve the corrosion resistance of steel in acid and alkali solution and liquid metal; Improve wear resistance of steel; Improve steel hardenability, weldability, and heat resistance.
Molybdenum copper alloy is applied to the field of aeronautics and astronautics for molybdenum substrate to join other elements (such as titanium, zirconium, hafnium, tungsten and rare earth elements, etc.) constitute non-ferrous alloy, the alloy elements of molybdenum alloy not only have the effect of solid solution strengthening and maintaining low plasticity, and still can form stable, diffuse distribution of carbide phase, improve the strength of the alloy and the recrystallization temperature. Because of their good strength, mechanical stability and high ductility, molybdenum base alloys are used in high heating components, extrusion abrasives, glass melting furnace electrodes, spray coatings, metal working tools, spacecraft parts and so on.
Molybdenum grease lubricant: Molybdenum dioxide is a good solid lubricant, because of its low friction coefficient, and high yield strength, can be in vacuum and a variety of low temperature, high-temperature normal use, so it is widely used in gas turbines, gear, mold, aerospace, nuclear industry, and other fields.
Molybdenum compounds are one of the most versatile catalysts used in the chemical, petroleum, plastics, textile, and other industries. For example, molybdenum disulfide has sulfur resistance and can catalyze the hydrogenation of carbon monoxide to alcohols under certain conditions, which is a promising C1 chemical catalyst. Molybdenum combined with cobalt and nickel is used as catalyst for petroleum refining pretreatment. Other common molybdenum-containing catalysts are molybdenum disulfide, molybdenum oxide, molybdate, ammonium secondary molybdate, etc.
Flame retardants and smoke suppressants of organic polymers
Adding 3%-4% molybdenum trioxide to the halogenated polyester can increase the critical oxygen index by 3%-4%, increase the amount of carbon produced during combustion by about 4% and reduce the amount of smoke by 3%.
Corrosion inhibitor: molybdate toxicity is very low, the corrosion of organic additives added in corrosion inhibitor is very weak, commonly used in air-conditioning cooling water and heating system structure, to prevent corrosion of low carbon steel.
Electronic and electrical field
Molybdenum wire for electric light sources has good conductivity and high-temperature resistance, thermal expansion coefficient is similar to glass, and is widely used in the manufacture of spiral filament core wire, lead wire, and hook parts. In addition, molybdenum wire is also an ideal electrode wire for edM machine tool, which can cut all kinds of steel and hard alloy, and its discharge machining is stable, which can effectively improve the precision of die.
Monolayer molybdenite materials have good semiconductor properties, some of which are better than the widely used silicon and graphene, and are likely to become the next generation of semiconductor materials. California Institute of nanotechnology has successfully used MoS2 to produce the molybdenum-based flexible microprocessor chip, the microchip is only equal 20% of the silicon chip size, extremely low power consumption, and fai transistors made of molybdenum in the case of standby power consumption for one over one hundred thousand of the silicon transistor, and cheaper than the same size of graphene circuit, the circuit also has the very strong flexibility. It's thin enough to adhere to human skin.
Molybdenum Powder Price
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Molybdenum Powder Supplier
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