Ultra-low Friction Films of Molybdenum Sulphide

Technology abstract

The European Space Tribology Laboratory (ESTL), operated by UK tribology specialists ESR Technology, is the leading supplier of thin film solid lubricants to the space industry. ESTL's MoS₂films exhibit a friction coefficient in vacuum of ≤0.01 in pure sliding, typically a factor of 10-50 lower than conventional surfaces. The MoS₂ films have been proven over several decades on a range of demanding space missions.

- Helen Rogerson -

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ESTL's MoS₂ films exhibit ultra-low friction properties in vacuum and inert environments, both in cryogenic and high temperature applications. In particular, the thin films of MoS₂offer high endurance under pure sliding motion. The films are deposited using proprietary techniques, to provide sub-micron accuracy and therefore adherence to engineering tolerances required for high precision components, such as ball bearings.

With proven space-flight heritage in a large number of mechanisms aboard high profile space missions, these thin films offer significant value for terrestrial vacuum applications where reliability and quality are required. ESR Technology have significant expertise relating to the design, production, and testing of these MoS₂ thin films in tribological systems, with extensive performance validation. ESTL’s proprietary deposition processes are comprehensively validated in a range of spacecraft applications, ensuring the highest quality and reliability.

Ultra-low friction properties in vacuum and inert environments
Suitable for a range of temperatures from cryogenic to high temperature applications
Long endurance under pure sliding motion
Ability to uniformly coat complex surfaces

Current:

Spacecraft mechanisms including precision bearings, gears, and screws

Potential:

Cryogenic systems
UHV (Ultra High Vacuum) systems
Fusion energy applications
Synergistic lubrication applications (i.e. in combination with other lubricants)