**7. Tendency in using polymeric materials and conclusions**

New development in processing polymer-based materials (here including polymers, polymer blends, polymer composites and stratified materials based on polymeric fabrics) make easier to replace metallic parts with ones made of polymer-based materials, at a convenient price.

Test campaign are running faster as the market obliged the designers and producers to give more reliable products and the new achievement in monitoring and investigating the tribological behavior help them to understand and formulate new and adequate materials.

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An obvious tendency for these materials is using them as coating, thick enough to fulfill an imposed reliability and durability.

New technologies allow for a better dispersion of the constituents, making the resulting materials more predictable [58–60].
