ABSTRACT
An important advantage of this test was that it offered a true quantitative measure of the adhesion as defined in this paper to a certain extent. However, the data collected showed a noticeable variation in the values of the scraping force that limits the use of this test to a restricted range of applications. For example, it cannot be used to compare the adhesion of samples with a varying coating thickness and quality. Upon testing a set of cemented carbide tools coated with 7 -1 1 μιη thick diamond films the scraping force showed a tendency to increase with the increase in film thickness. This trend was believed to be due to the increase in the tear resistance along the stripping edge lines in the coating. Another questionable feature of this test is whether the scraping action is supplying the driving force for true interfacial failure or rather for cohesive brittle failure.
