The use of molybdenum disulfide

Molybdenum disulfide is a kind of inorganic, chemical formula MoS2, is the main component of molybdenite.  Black solid powder with metallic luster.  

Application of molybdenum disulfide

Molybdenum disulfide is an important solid lubricant, especially suitable for high temperature and high pressure.  It also has diamagnetic, can be used as a linear photoconductor and display p-type or n-type conductivity of semiconductors, with the role of rectification and energy conversion.  Molybdenum disulfide can also be used as a catalyst for the dehydrogenation of complex hydrocarbons.  

It is also known as the "king of advanced solid lubricants".  Molybdenum disulfide is a solid powder made by changing molecular structure of natural molybdenum refined powder after chemical purification.  This product is black with silver gray, metallic luster, greasy touch, insoluble in water.  The product has the advantages of good dispersity and non-bonding. It can be added to all kinds of grease to form a non-bonding colloidal state and increase the lubricity and extreme pressure of grease.  Also suitable for high temperature, high pressure, high speed and high load of mechanical working state, prolong the life of equipment.  

The main function of molybdenum disulfide for friction materials is to reduce friction at low temperature, increase friction at high temperature, small loss of combustion, volatile in friction materials.  

Friction reduction: the particle size of molybdenum disulfide produced by supersonic airflow grinding reaches 325-2500 mesh, the hardness of micro particles is 1-1.5, and the friction coefficient is 0.05-0.1, so it can play a role in friction reduction in friction materials;  

Increasing friction: Molybdenum disulfide does not conduct electricity, and there are copolymers of molybdenum disulfide, molybdenum trioxide and molybdenum trisulfide.  When the temperature of the friction material increases sharply due to friction, the molybdenum trioxide particles in the copolymer expand with increasing temperature, which increases the friction.  

Anti-oxidation: Molybdenum disulfide is obtained through chemical purification and comprehensive reaction, its PH value is 7-8, slightly alkaline.  It covers the surface of friction materials, can protect other materials, prevent them from being oxidized, especially make other materials not easy to fall off, adhesion enhancement;  

In addition, molybdenum disulfide can also become a new material for making transistors.  Molybdenum disulfide has a band gap of 1.8eV compared to graphene, which is also a two-dimensional material, while graphene has no band gap. Therefore, molybdenum disulfide may have a wide application space in the field of nanotransistors.  The electron mobility of the single-layer mos2 transistor is up to 500 cm^2/(V·s), and the current switching rate is up to 1×10^8.