Mechanical features optimization for α - Cr2 O3 oxide films growing on alloy NiCr30

Mechanical features have been investigated in the case of α - Cr2 O3 thermal oxide films growing on NiCr30 alloy in the temperature range 700-900 °C. From previous experimental results obtained by Raman spectroscopy and giving the growth stress evolution in α - Cr2 O3 films, and based on a modelling of the system, both asymptotic forms and an optimization procedure have been developed which give values for the mechanical characteristic parameters of the system and also its evolution with the oxidation temperature. © 2009 Elsevier B.V. All rights reserved