Thursday, June 23, 2011

Molybdenite lubricant mos2

Molybdenum disulfide is Advanced solid lubricant.
Package:50kg/drum
Size:1.5um
MOQ: 10KGS
Molybdenum disulfide
is the inorganic compound with the formula MoS
2
. This black crystalline sulfide of molybdenum occurs as the mineral molybdenite. It is the principal ore from which molybdenum metal is extracted. The natural amorphous form is known as the rarer mineral jordisite. MoS
2
is less reactive than other transition metal chalcogenides, being unaffected by dilute acids. In its appearance and feel, molybdenum disulfide is similar to graphite. Indeed, like graphite, it is widely used as a solid lubricant because of its low friction properties, sometimes to relatively high temperatures.
Specific uses:
MoS
2
is often used in two-stroke engines; e.g., motorcycle engines. It is also used in CV and universal joints. During the Vietnam War, the molybdenum disulfide product "Dri-Slide" was used to lubricate weapons, although it was supplied from private sources, not the military. MoS
2
-coatings allow bullets easier passage through the rifle barrel causing less barrel fouling allowing the barrel to retain ballistic accuracy much longer. This resistance to barrel fouling comes at a cost of slower muzzle velocity with the same load due to a decreased chamber pressure. MoS
2
is applied to bearings in ultra-high vacuum applications up to 10
−9
torr (at -226 to 399°C). The lubricant is applied by burnishing and the excess is wiped from the bearing surface.

No comments:

Post a Comment