Scratch and cyclic impact testing of adhesion PLD coatings, Ti-N on SS316L substrate
The method introduced by W. C. Oliver and G.M. Pharr in 1992 for hardness and elastic modulus measuring by instrumented indentation technique was adopted and used widely in mechanical behavior characterization of materials at the small scales . Its appeal derives largely from the fact that mechanical properties can be determined directly from indentation loading measurements and of movement without having to view the hardness imprint. With high resolution testing equipment, it facilitates measurement of the properties to the micrometer and nanometric scales. Therefore, this method has become a primary technique to determine the mechanical properties of thin films and small structural features.