Introduction to Molybdenum Disulfide Pulver
is a type of inorganic. MoS2, which is molybdenite’s main component, has the chemical formula MoS2. It is a solid black powder with a metallic luster. It has a melting temperature of 2375, a density 4.80g/cm3 (14), Mohs hardness 1.0 1.5.
Molybdenum disulfide decomposes at 1370, and then to molybdenum metallic and sulfur at 1600. Molybdenum disulfide can be oxidized by heating it in air at 315. Molybdenum sulfide can’t be dissolved in water, dilute or concentrated sulfuric acids. Slow oxidation takes place at 400. Then, molybdenum dioxide is formed.
Can be heated to produce molybdenum pythloride by reacting with chlorine gas
Molybdenum disulfide reacts to alkyl-lipid under control to create an embedded compound (intercalated compounds) LixMoS2. If it reacts to butyllithium, then the product is LiMoS2.
Copper has a high level of active sulfur. It is easy to cause copper to corrosion. This topic has been covered in numerous papers and books on lubricant ingredients. Additionally, when parts of copper or their alloy manufacturing require lubrication it is not necessary that lubrication products contain molybdenum disulfide. Instead, they must be combined with an anti-copper agent.
Molybdenum Disulfide Pulp Powder’s Physical Chemistry
It is insoluble with water and dilute acids. It can be corroded easily by concentrated sulfuric, concentrated nitric, boiling concentrated chloric acid, aqua regia or pure oxygen, fluorine, or chlorine. It is insoluble with other bases, solvents and petroleum, as well as synthetic lubricants. It is non-magnetic and has semiconductor properties. Molybdenum dioxide mo-S edges are quite numerous, easy to peel among layers, and have good anisotropy. They have strong adhesions to metal, and can adhere to any metal surface. The lubricant molybdenum dioxide is high in compressive strength, wear resistance, excellent adhesion (0.03-10.08), film structures characteristics, and stable under high pressure. It can also be used under high temperatures (1200), low temperatures (-190), high speeds, high pressure, and ultra-low temperatures. Molybdenum dioxide begins to oxidize at 400 to molybdenum oxide, and quickly oxidizes above 540 to molybdenum triooxide. It was sublimated to 450 in an atmosphere of inertia, then decomposed to molybdenum at 1370. At 1600, it was decomposed to sulfur and molybdenum. By controlled reaction of alkyl lithium and molybdenum dioxide, it was formed into molybdenum penichloride. Low toxicity.
|Molybdenum Disulfide Powder Properties|
|Other names||Molybdenum Disulfide (Molybdenum Sulfide), MoS2|
|Appearance||Solid in black/leadgray|
|Melting Point||2,375 degC (4,307 degF; 2,648 K)|
|Solubility of H2O||Insoluble|
Molybdenum Disulfide Pulver Preparation Methods
Molybdenum dioxide has many applications and great properties. Therefore, nano-mos2 preparation and application have been extensively studied both at home and abroad.
MoS2 can be prepared using the natural molybdenite concentration purification method. This method removes acid insoluble matter, SiO2, Fe Cu, Ca, Cu, Pb, and other impurities from molybdenite concentration after a certain physical and chemical activity. Next, refine the process to create nano-mos2. This is how the Us Climax Molybdenum firm produces MoS2. This method is capable of maintaining the MoS2 crystal form and good lubrication properties, making it suitable for the production of lubricants. However, the purity and purification of nano MoS2 made by this method is not good. If the temperature drops below 400 degrees it is best to use a low-cost MoS2 for ordinary environments. It is not possible to lubricate the MoS2 with a lower lubrication level than 1300.
The synthesis process can produce sulfide in high purity, with few impurities and fine particles, and can meet different functional requirements. This is why the synthesis procedure to make nano sulfide was so important. There are many ways to make nano-MOS2, such a thermal decomposition method for ammonium tetrathiomolybdate and hydrogen sulfide. Two preparation methods can be used to make nano-mos2: The tungsten source/molybdenum can be directly mixed with the source of sulfur, or the tungsten and molybdenum can be mixed with the source of sulfur to create the precursor body. Once the precursor is reduced or decomposed, the body can be reduced to MoS2 with appropriate methods.
Molybdenum Disulfide Powder – Applications
. Molybdenum-disulfide is used in most dry film lubricants (epoxy resin type EM-1 dry film) except where black fillers have not been specified. Molybdenum-disulfide dry-film lubricants that are most commonly used are the United States military dry films MIL L-3987 and MIL L-23398. Dry film lubricant can be used to lubricate bearings, molds, and many other civil products.
. Molybdenum sulfide ointment generally is added to oil and fats with a mass fraction around 4% molybdenum sulfide. It has been used successfully in the fields of metallurgy and steel rolling, as well as mining machinery and equipment for coal mining. Some high temperature, open air, field, and tunnel application equipment make it difficult for grease to be lubricated or added to.
Lubricating film-forming glue for wheels, rails and gear
. Film-forming paste is widely used for lubrication of the gear of locomotive drive shafts. You can extend the life of rail by applying film-forming paste to rail and rim. The life expectancy of the rim is 7 times longer and electricity (or fuel) can be saved by around 7%.
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