Hardness measurement of thin films is a major topic. At the nanoscale the interplay between substrate and coating during indentation process is not well known. Atomic Force microscopy nanoindentation has been used to adress this problem. We measured the hardness of thin coatings deposited on a steel substrate, varhing the indentation depth and observing the effect of the substrate-coating interaction on the hardness evaluation. Focused ion beam cross-sections of the indented region and numerical simulations also show a relevant contribution of the substrate to the hardness evaluation.
Effect of the indentation depth on the evaluation of mechanical properties of thin film / L., Calabri; Mantovani, Sara; L., Rettighieri; Valeri, Sergio. - In: INTERNATIONAL JOURNAL OF MATERIALS RESEARCH. - ISSN 1862-5282. - STAMPA. - 99:8(2008), pp. 847-851. [10.3139/146.101708]
Effect of the indentation depth on the evaluation of mechanical properties of thin film
MANTOVANI, Sara;VALERI, Sergio
2008
Abstract
Hardness measurement of thin films is a major topic. At the nanoscale the interplay between substrate and coating during indentation process is not well known. Atomic Force microscopy nanoindentation has been used to adress this problem. We measured the hardness of thin coatings deposited on a steel substrate, varhing the indentation depth and observing the effect of the substrate-coating interaction on the hardness evaluation. Focused ion beam cross-sections of the indented region and numerical simulations also show a relevant contribution of the substrate to the hardness evaluation.Pubblicazioni consigliate
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