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Infobox references. Molybdenum disulfide (or moly) is an inorganic compound composed of molybdenum and sulfur. Its chemical formula is MoS2. The compound is classified as a transition metal dichalcogenide. It is a silvery black solid that occurs as the mineral molybdenite, the principal ore for molybdenum. [6]
Dry lubricant. Dry lubricants or solid lubricants are materials that, despite being in the solid phase, are able to reduce friction between two surfaces sliding against each other without the need for a liquid oil medium. [1] The two main dry lubricants are graphite and molybdenum disulfide. They offer lubrication at temperatures higher than ...
Molybdenum. body-centered cubic (bcc) (cI2) Molybdenum is a chemical element; it has symbol Mo (from Neo-Latin molybdaenum) and atomic number 42. The name derived from Ancient Greek Μόλυβδος molybdos, meaning lead, since its ores were confused with lead ores. [9]
Molybdenite is a mineral of molybdenum disulfide, Mo S 2. Similar in appearance and feel to graphite, molybdenite has a lubricating effect that is a consequence of its layered structure. The atomic structure consists of a sheet of molybdenum atoms sandwiched between sheets of sulfur atoms. The Mo-S bonds are strong, but the interaction between ...
Molybdenum disulfide is a dry lubricant usable in vacuum. Tungsten disulfide is another dry lubricant usable in vacuum. It can be used at higher temperatures than MoS 2. Tungsten disulfide used to be significantly more expensive, but molybdenum disulfide prices have risen to a comparable range. [7]
Disulfide. In chemistry, a disulfide (or disulphide in British English) is a compound containing a R−S−S−R′ functional group or the S2−. 2 anion. The linkage is also called an SS-bond or sometimes a disulfide bridge and usually derived from two thiol groups.
Grease (lubricant) Grease is a solid or semisolid lubricant formed as a dispersion of thickening agents in a liquid lubricant. Grease generally consists of a soap emulsified with mineral or vegetable oil. A common feature of greases is that they possess high initial viscosities, which upon the application of shear, drop to give the effect of an ...
The potassium intercalated molybdenum ditelluride becomes superconducting below 2.8 K. [36] As a lubricant molybdenum ditelluride can function well in a vacuum and at temperatures up to 500 °C with a coefficient of friction below 0.1. However molybdenum disulfide has a lower friction, and molybdenum diselenide can function at higher temperatures.