Evonik develops new PEEK powders for tribological coatings

The PEEK powders of Evonik’s Vestakeep® brand are particularly suitable for applications that are subject to extreme mechanical, thermal and chemical requirements. The coating material is able to withstand permanent operating temperatures of up to 250°C and is characterised by its unique ability to resist abrasion and chemicals.
Thanks to the excellent tribological performance of coatings made from specially developed Vestakeep powders, the friction between sliding surfaces is significantly reduced, which in turn increases efficiency and economy of operation – for example lower fuel consumption and lower CO₂ emissions in combustion engines, extended service life of bearings, or higher turbine speeds. These special Vestakeep coatings also allow for employing more cost-efficient substrate materials for components used in applications with sliding friction.
The various VestakeepPEEK powders are comprised of particles with average particle sizes ranging from 5 to 110µm. They can be applied by flame and electrostatic spraying methods or as aqueous dispersions. With electrostatic application, layer thicknesses can range from 20 and 300µm; dispersions are suitable for thinner layers.
Based on more than 40 years of experience, Evonik has been a leader in the development and production of high performance polymers. Vestakeep PEEK powders are part of the high-temperature polymers product portfolio offered by the Resource Efficiency Segment.