Determination of the absolute hardness of electrolytically produced copper coatings by application of the Chicot–Lesage composite hardness model Scientific paper

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Ivana Mladenović
https://orcid.org/0000-0002-6852-7541
Jelena Lamovec
https://orcid.org/0000-0002-2710-3937
Dana Vasiljević-Radović
https://orcid.org/0000-0002-7609-8599
Vesna Radojević
Nebojša D. Nikolić
https://orcid.org/0000-0002-6385-5714

Abstract

In this study, a novel procedure, based on application of the Chicot–Lesage (C–L) composite hardness model, was proposed for the determination of an absolute hardness of electrolytically produced copper coatings. The Cu coatings were electrodeposited on the Si(111) substrate by the pulsating current (PC) regime with a variation of the following parameters: the pause duration, the current density amplitude and the coating thickness. The topography of pro­duced coatings was characterized by atomic force microscope (AFM), while a hardness of the coatings was examined by Vickers microindentation test. Applying the C–L model, the critical relative indentation depth (RID)c of 0.14 was determined, which is independent of all examined parameters of the PC regime. This RID value separated the area in which the composite hardness of the Cu coating corresponded to its absolute hardness (RID < 0.14) from the area in which the application of the C–L model was necessary for a determin­ation of the absolute coating hardness (RID ³ 0.14). The obtained value was in a good agreement with the value already published in the literature.

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How to Cite
[1]
I. Mladenović, J. Lamovec, D. Vasiljević-Radović, V. Radojević, and N. D. Nikolić, “Determination of the absolute hardness of electrolytically produced copper coatings by application of the Chicot–Lesage composite hardness model: Scientific paper”, J. Serb. Chem. Soc., vol. 87, no. 7-8, pp. 899–910, May 2022.
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Materials

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