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By lql | 05 February 2023 | 0 Comments

Can molybdenum disulfide be used as lubricant?

What is Molybdenum disulfide?
Molybdenum disulfide is a kind of lead-grey glossy powder, which is synthetic and black. Sublimation begins at 40. Soluble in aqua regia and hot concentrated sulfuric acid, insoluble in water and dilute acid. The relative density (d1515) is 5.06. The melting point is 2375. Irritating.
Applications of Molybdenum disulfide powder
Molybdenum disulfide is an important solid lubricant, especially suitable for high temperature and high pressure. It also has diamagnetism, can be used as a linear photoconductor and a semiconductor with P-type or N-type conductivity, and has the functions of rectification and transduction. Molybdenum disulfide can also be used as a catalyst for dehydrogenation of complex hydrocarbons.
The main function of molybdenum disulfide used in friction materials is to reduce friction at low temperatures, increase friction at high temperatures, have a small loss on ignition, and be volatile in friction materials.
In addition, molybdenum disulfide can be used as a new material for transistors. Compared with graphene, which is a two-dimensional material, molybdenum disulfide has an energy band gap of 1.8eV, while graphene has no energy band gap. Therefore, molybdenum disulfide may have a broad application space in the field of nano-transistors. Moreover, the electron mobility of the single-layer molybdenum disulfide transistor can reach about 500 cm 2/(v s) at the highest, and the current switching rate can reach 1× 10 8.
Characteristics of Molybdenum disulfide powder
1.Molybdenum disulfide can react with chlorine gas when heated to form molybdenum pentachloride: 2 MoS2+ 7 Cl2 2 MoCl5+ 2 S2Cl2.
2.Molybdenum disulfide and alkyl lithium react under controlled conditions to form intercalation compound (sandwich compound) LixMoS2. If it reacts with butyl lithium, the product is LiMoS2.
3.Molybdenum disulfide has a high content of active sulfur, which is easy to corrode copper. It is discussed in many books and papers about lubricant additives. In addition, when parts made of copper and their alloys need lubrication, it is not impossible to choose lubricating products containing molybdenum disulfide, but it is also necessary to add copper corrosion inhibitors.
Preparation method of molybdenum disulfide
Molybdenum concentrate is prepared by repeatedly stirring with hydrochloric acid and hydrofluoric acid under direct steam heating, washing with hot water, centrifuging, drying and crushing. Hydrogen sulfide gas is introduced into the ammonium molybdate solution to generate ammonium thiomolybdate. Adding hydrochloric acid to precipitate molybdenum trisulfide, centrifuging, washing, drying and pulverizing. And finally, heating to 950 deg c for desulfurization.
Price of molybdenum disulfide
Molybdenum disulfide particle size and purity will affect the product's price, and the purchase volume can also affect the cost of molybdenum disulfide. A large amount of large amount will be lower. The price of molybdenum disulfide can be found on our company's official website.
Molybdenum disulfide powder supplier
Luoyang Tongrun Nano Technology Co. Ltd.  (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Molybdenum disulfide powder, nitride powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Molybdenum disulfide powder, you are welcome to contact us or inquire any time.

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