Effect of pore depth on tribological behavior of anodic alumina films under nano-thin film lubrication

- PFPE modified PAA films with high PDEP-to-PDIA ratios were prepared.
- The friction property of the PAA films improved with an increase in the PDEP value.
- The films with large PDEP value had high load-carrying capacity.
- The deep pore helped to make PFPE film has better contact with the alumina surface.
- The deep pore helped to store lubricant and trap wear debris.