Anti-Friction Coatings (AFCs)—also known as dry-film lubricants, solid film lubricants, or bonded coatings—are surface engineering materials designed to provide dry lubrication under challenging tribological environments. Structurally similar to industrial coatings, AFCs replace decorative pigments with ultra-pure microscopic solid lubricants (MoS2, PTFE, Graphite, or h-BN) homogeneously bound within an organic or inorganic polymeric resin matrix.
While lubricating oils and greases rely on fluid dynamics and wet matrix retention to separate surfaces, extreme environmental constraints often make liquid phases entirely unfeasible.
AFCs are selected where conventional fluid media (oils and greases) cannot be used: extreme vacuum environments (aerospace), radiation exposure, high operating temperatures (>350°C), heavy chemical contamination, dust/grit exposure, or applications requiring permanent, maintenance-free lifetime lubrication without fluid migration.