Estimation of Elastic Modulus with Multiple Indenters

Experimental Mechanics, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

Language: Английский

Optimizing stealth thin films: Nanoindentation and nanoscratch testing for enhanced mechanical properties

Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

The study provides a comprehensive mechanical assessment of thin film coatings using nanoindentation and nanoscratch testing to analyze the effects composition, microstructure, conditions on their properties. A diverse range materials, such as ZrAlN, TiCrN, reduced graphene oxide-functionalized epoxy coatings, was systematically evaluated under varying test conditions. Nanoindentation revealed critical parameters hardness, elastic modulus, plasticity index, underscoring influence filler content matrix interactions in determining performance. ZrAlN films exhibited exceptional thermal stability resilience, making them ideal for high-temperature stealth applications. Meanwhile, TiCrN with optimized nitrogen stoichiometry demonstrated enhanced adhesion strength, scratch resistance, recovery, emphasizing significance precise compositional control aerospace defense systems. Nanoscratch further validated improved performance these showcasing ability withstand stresses while maintaining structural integrity. Comparative tables graphical interpretations were utilized reveal intricate relationships between material compositions, parameters, highlights importance optimizing composition microstructure develop multifunctional that meet stringent demands modern technology. Future research should address long-term cyclic loading extreme environmental exploring novel systems offer radar absorption low infrared emissivity. These findings provide robust framework advancing technologies tailored next-generation

Language: Английский

Tuning the plasmonic resonance in TiN refractory metal

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: April 4, 2024

Abstract Plasmonic coatings can absorb electromagnetic radiation from visible to far-infrared spectrum for the better performance of solar panels and energy saving smart windows. For these applications, it is important be as thin possible grown at lower temperatures on arbitrary substrates like glass, silicon, or flexible polymers. Here, we tune investigate plasmonic resonance titanium nitride films in thicknesses regime varying ~ 20 60 nm. High-quality crystalline route-mean-square roughness less than 0.5 nm were a glass substrate temperature 200 °C with bias voltage − V using cathodic vacuum arc deposition. A local surface-enhanced-plasmonic-resonance was observed between 400 500 nm, which further shows blueshift frequency thicker due increase carrier mobility. These results combined finite-difference-time-domain numerical analysis understand role stoichiometry broadening absorption.

Language: Английский