An Overview Of Tungsten Disulfide Properties

 


Tungsten Disulfide Properties

Tungsten disulfide or WS2 is a dry lubricant that belongs to the family of transition metal dichalcogenides. It is widely used due to its unique chemical and physical properties. It offers excellent lubricity in its solid state and can be used at extreme high temperature and pressure. It is applied as a film to the material to prevent any kind of direct contact between the surfaces.

Properties of tungsten disulfide

This section elaborates on different properties of tungsten disulfide.

• Chemical properties

1. It is composed of 74.13 % of tungsten and 25.8 % of sulfur.

2. It has a molar mass of 247.98 gm per molecule.

3. It has a density of 7.5 gm per cubic cm.

• Physical properties

1. Tungsten disulfide or WS2 nanoparticles appear as a blue-grey powder.

2. It is slightly soluble in water.

3. It forms a hexagonal layered structure when present in bulk form.

• Thermal properties

1. It has high melting point of 1250 degree Celsius.

Applications of tungsten disulfide

Listed below are some of the basic applications of tungsten disulfide nanoparticles.

1. It is used as a catalyst in hydrodesulfurization or hydrotreating of the crude oil.

2. It is used as solid lubricants, self-lubricating materials and dry film lubricants.

3. They can be effectively used at extreme environments such as high temperature, high pressure, vacuum and even high load.

4. It is used as a semiconductor.

5. It is used as fuel cells of anode sensors.

6. Nanostructures tungsten disulfide acts as storage for hydrogen and lithium.

7. It is used as a catalyst for the hydrogenation of carbon dioxide.

8. It is used as a channel material for field effect transistors. 

The unmatchable properties of tungsten disulfide make it stand at the top for an innumerable applications. Besides offering the lowest co-efficient of friction, it can be tried with various new ideas and innovations. The tungsten disulfide properties allow you to mix it with wet lubricants to enhance the lubricity for a longer period of time. The coating of WS2 powder on automotive parts can also be tried to get the best result.

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