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Mechanical adhesion of SiO2 thin films onto polymeric substrates

Ho, Caroline and Alexis, Joël and Dalverny, Olivier and Balcaen, Yannick and Dehoux, Anita and Châtel, Sébastien and Faure, Bruce Mechanical adhesion of SiO2 thin films onto polymeric substrates. (2018) Surface Engineering. 536-541. ISSN 0267-0844

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Official URL: https://doi.org/10.1080/02670844.2018.1528689

Abstract

Quantification of adhesion between a 200 nm silicon dioxide layer and a 4.5 μm thick polymeric coating was performed by analysing the SiO2 buckle morphologies generated under compressive stress. Impacts of mechanical properties of SiO2 layers, as well as a surface pretreatment on adhesion, are shown. Interfacial toughness of both configurations are assessed using the Hutchinson and Suo model, which involves buckle dimensions determined in situ by an optical profilometer, and elastic modulus Ef, of the SiO2 thin films, characterised by nanoindentation. The surface pretreatment led to initiation of buckling at a higher strain. The same trend is observed for a layer with a lower stiffness and residual stress.

Item Type:Article
HAL Id:hal-02359798
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Essilor (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
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Deposited On:04 Apr 2019 11:58

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