Tungsten Disulfide Properties : Contributes To Its High Corrosion Resistance

 


Tungsten Disulfide Properties | Img Source : blogger.googleusercontent.com

Tungsten Disulfide is an important dry lubricant that you will need in situations where moving parts need to be protected from wearing out due to friction. It is a highly effective one, which can prolong the life span of machinery, thus preventing expensive breakdowns.

This type of lubricant is required, especially when problems like debris, migration, temperature load, etc. prevent oil or grease from being used as a lubricant. Its key quality is that it does not change its state and quality no matter how tough the environment in which the machinery is working is. Even under such circumstances, it is able to give continuous lubrication that gives sound protection to metal parts.

A Look At Key Tungsten Disulfide Properties

If you have been searching for a material that is capable of giving the kind of lubrication that is seen with Molybdenum Disulfide (MoS2) or graphite, it can be only Tungsten Disulfide. It is to be noted that tungsten disulfide has a crystalline structure with weak sulphur to sulphur bonds through which its layers work as a lubricating mechanism.

When metal parts of different metals and hardness move with each other, the result is quick wear out. This problem can be avoided by applying tungsten disulfide to them. It is composed of tungsten and sulphur and its chemical formula is WS2. It belongs to the transition metal dichalcogenide group of materials.Tungsten disulfide properties include:

• It is best for use in high-temperature and high-pressure environments.

• In a normal atmosphere, its temperature resistance is between -270o C and 650o C.

• In a vacuum, its temperature resistance is between -188o C and 1316o C.

• It’s coating has a load bearing capacity of 300,000 psi

Why Tungsten Disulfide is so efficient in reducing friction is because it is able to provide lubricity. It is a non-toxic lubricant and is also non-corrosive in nature. It will not be affected by the qualities of a fuel solvent. When it is mixed with oils and greases, it will enhance the performance of the engine or machinery part manifold.

It is also compatible with various types of oils and greases which shows how easily it can be mixed with them. This dry lubricant is essential in NASA projects that demand the need for lubricants with low friction qualities that can remain as such even under the most difficult of work environments. It is most often preferred over Molybdenum Disulfide (MoS2) in applications where the temperature exceeds 500°C.

During the movement of two moving parts against one another, the result is friction which Tungsten Disulfide reduces by removing the cold welding occurring between them. Some of the many items that need Tungsten Disulfide coating are aerospace components, automotive parts, race car engines, spindles, piston cylinders etc.

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