Improvement of the tribological behavior of PTFE-anodic film composites prepared on 1050 aluminum substrate

► We prepared a model anodic film on aluminum substrate in phosphoric acid. ► We successfully filled the whole porous structure with PTFE particles by using an improved sedimentation technique. ► The anodic and composite films were tribologically tested, tracks and counterfaces characterized after tribological tests. ► The incorporation of PTFE particles significantly improves the lifetime of the anodic film.