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A model to determine the surface hardness of thin films from standard micro-indentation tests

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2006
auteur(s) Lesage Jacky; Pertuz Alberto; Puchi E.; Chicot Didier
journal (abréviation) Thin Solid Films (TSF)
volume (numéro) 497 (1-2)
  
pages 232 – 238
résumé The present investigation has been carried out in order to propose a new model for the determination of the surface hardness of thin films, employing data easily obtained from standard micro-indentation tests. The model is based on the consideration that the substrate has a predominant behavior at the highest indentation loads, whereas at low indentation loads the predominant behavior is that of the film. Such a description is achieved by combining a series and parallel additive laws associated to each behavior, respectively. This approach has been applied for the computation of the hardness of a number of films, including Al2O3, Cr, diamond like carbon, Ti, TiC, TiCN, TiN, TiNx and ZrNx, deposited onto different substrates. It is shown that the results obtained are in good agreement with the predictions provided by other models reported in the literature.
mots clés Hardness modeling; Coated systems; Monolayers; Thin films
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