What Is Tungsten Disulfide Used For

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What is Tungsten Disulfide?

Current research defines tungsten disulfide (WS2) as a dry lubricant powder. Measured friction coefficients for WS2 remain lower than those for Molybdenum Disulfide (MoS2) and graphite under identical test conditions.

tungsten disulfide powder

Tungsten Disulfide Applications

Multiple chemical properties allow tungsten disulfide (WS2) to replace Molybdenum Disulfide (MoS2) in lubrication tests. WS2 operates in high temperature and high pressure environments. It remains stable from -450° F (-270° C) to 1200° F (650° C) at atmospheric pressure. Under vacuum, its stability extends from -305° F (-188° C) to 2400° F (1316° C). Coated films withstand loads up to 300 000 psi.

The powder exhibits a low friction coefficient. Its potential use is evaluated by research teams. Scientists may test various experimental applications given that results show quantifiable friction reduction.

tungsten disulfide application

Tungsten disulfide lubricates moving parts. In formulations, WS2 forms a coating on mechanical surfaces. The coating reduces friction and increases load capacity for extended operational cycles.

The powder may be applied as a coating by spraying dry compressed air onto the substrate. No binder is required. Application occurs at room temperature.

Coating applications include automotive parts and racing engine components. They are used on cutting tools and blades. Aerospace components and various types of bearings utilise these coatings. Maritime parts, valve components, pistons, chains, slotting tools, knives, mould separators, precision gears and machine components have also been coated.

Tungsten Disulfide Powder does not adhere readily. Application with sufficient force is necessary for adhesion onto a substrate. The maximum possible coating thickness is 0.5 micrometres because a WS2 particle does not adhere to another. A single layer of WS2 particles produces measurable friction reduction.

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About the author

Chin Trento

Chin Trento holds a bachelor's degree in applied chemistry from the University of Illinois. His educational background gives him a broad base from which to approach many topics. He has been working with writing advanced materials for over four years at Stanford Advanced Materials (SAM). His main purpose in writing these articles is to provide a free, yet quality resource for readers. He welcomes feedback on typos, errors, or differences in opinion that readers come across.

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What Is Tungsten Disulfide Used For