Wear Durability and Adhesion Evaluation Methods for Ultrathin Overcoat Films by Atomic Force Microscopy

摘要

A method has been developed for evaluating the wear durability and adhesion characteristics of ultrathin overcoat films. The relationship between the wear depth and applied load or between the wear depth and number of scanning- scratch cycles is used in AFM nanowear tests. Inherent wear durability, which is independent of adhesion or substrate hard- ness, can be evaluated from the relationship between wear depth and applied load at relatively low loads, ad the adhesion characteristics can be evaluated from the relationship at relative- ly high loads. Wear durability can be evaluated with a small number of scanning-scratch cycles and adhesion with a large number of cycles.