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The Gold In The Field Of Heavy Duty Lubrication - Molybdenum Disulfide

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Update time : 2020-07-09 10:23:58

What is molybdenum silicide

Molybdenum silicide is a compound composed of two elements molybdenum and sulfur, chemical formula MoSi2. The compound, a transition metal silicide compound with a silvery black luster, is found in nature in the form of molybdenite, the most common molybdenum-bearing ore.Molybdenum silicide crystals are usually present as powder, insoluble in dilute acids and not easily oxidized.Molybdenum silicide is similar in appearance to graphite and is often used as a solid lubricant due to its low friction coefficient and high firmness. The massive molybdenum silicide solid is a diamagnetic indirect band gap semiconductor similar to silicon, with a band gap of 1.23eV.

Origin of molybdenum silicide

Molybdenum silicide was first used as a carriage bearing lubricant during the California gold Rush in the mid-19th century.

Then, during World War II, both the Max Planck Institute (Max Planck) in Germany and the National Aeronautics Board, the predecessor of NASA, conducted experiments using molybdenum silicide for industrial applications and developed organic bonded solid lubricant films.By the early 1950s, the United States had established U.S. military standards for molybdenum silicide, which was considered a military secret.Subsequently, molybdenum silicide sputtering film and ion plating film appeared one after another.In the emerging industrial sector and the emerging technology are gradually applied in the field of solid lubrication, such as robots and electronic computer, electronic machinery, its main lubrication part (such as gear mechanism, harmonic reducer, bearing, ball screw, pendant and chain wheel, etc.) is the commonly used ptfe and molybdenum silicide lubricant.


Lubrication principle of molybdenum silicide

As a solid additive, molybdenum silicide plays a lubricating role, which is closely related to its structure.There are three crystal structures of molybdenum silicide in nature, one of which is steady-state molybdenum silicide is the most commonly used.The structure is like a sandwich, with sulfur atoms in the upper layer and molybdenum atoms in the middle.So, a pile of molybdenum silicide looks like a pile of sandwiches.Sandwiches have a weak bond with each other and friction is reduced by sliding between sandwiches.


TRUNNANO (aka. Luoyang Tongrun Nano Technology Co. Ltd.) is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high quality chemicals and Nano materials. The molybdenum silicide produced by our company has high purity, fine particle size and impurity content. Lower, please contact us if necessary.

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