Nanoindentation and Nanoscratch Testing for the Mechanical Characterization of Stealth Thin Film Coatings

Abstract

The study explores the mechanical assessment of thin film coatings through nanoindentation and nanoscratch testing methodologies, crucial for understanding and enhancing their mechanical properties. It examines the composition, microstructure, and behavior of various thin films, such as ZrAlN, TiCrN, and rGOF/EP, under different test settings. Nanoindentation measures hardness, elastic modulus, and plasticity index, providing insights into the impact of filler content and matrix interactions. The study highlights the importance of correct filler quantities and stoichiometric ratios for desired mechanical properties, as evidenced by nanoscratch testing, which measures adhesive strength, elastic restitution, and scratch resistance. Comprehensive testing in diverse settings and precise management of film composition and microstructure are emphasized to achieve optimal mechanical properties. Future research may explore novel materials, refine testing procedures, and develop predictive models, making nanoindentation and nanoscratch testing essential for advancing high-performance thin film coatings.