6533b828fe1ef96bd1288fbc
RESEARCH PRODUCT
Determination of elastoplastic properties of TiO2 thin films deposited on dual phase stainless steel using nanoindentation tests
Hervé PelletierHervé PelletierVincent VignalJacques BreuilsJoël Kriersubject
010302 applied physicsSpin coatingMaterials scienceThin filmsMetallurgy02 engineering and technologySurfaces and InterfacesGeneral ChemistrySubstrate (electronics)Inverse methodNanoindentation021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesFinite element methodNanoindentationSurfaces Coatings and FilmsPhase (matter)0103 physical sciencesNano-Materials ChemistryThin film0210 nano-technologyFinite element modelingElastic modulusdescription
International audience; In recent years, the extraction of mechanical behaviour of thin films by nanoindentation using sharp indenter geometry has been extensively studied. This work investigates the mechanical properties of TiO2 thin film (1 µm thickness) deposited by spin coating on dual phase Duplex stainless steel and glass substrates. Experiments are carried out with different sharp triangular pyramids (a Cube corner and a Berkovich indenter) using a commercial Nano Indenter® XP apparatus. The substrate effect has been counteracted and an inverse method proposed in literature for bulk material has been adapted to assess the elastoplastic parameters of the tested thin film directly from estimation of the hardness and elastic modulus values determined experimentally. This experimental method, coupled with two dimensional finite elements modelling, allows the determination of the mechanical behaviour of the film over the Duplex steel.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-03-01 |