AustralieFrV1, Main, Exploration, bibRecord, 009607

Enhanced adhesion of atomic layer deposited titania on polycarbonate substrates

Identifieur interne : 009607 ( Main/Exploration ); précédent : 009606; suivant : 009608

Enhanced adhesion of atomic layer deposited titania on polycarbonate substrates

Auteurs : B. A. Latella [Australie] ; G. Triani [Australie] ; Z. Zhang [Australie] ; K. T. Short [Australie] ; J. R. Bartlett [Australie] ; M. Ignat [France]

Source :

Thin solid films [ 0040-6090 ] ; 2007.

RBID : Pascal:07-0287403

Descripteurs français

Pascal (Inist)
- Adhérence, Tribologie, Propriété mécanique, Méthode couche atomique, Couche mince, Traitement par plasma, Contrainte traction, Fracture, Microscopie optique, Fissuration, Endommagement, Fonction densité, Modèle structure, Croissance cristalline en phase vapeur, Titane oxyde, Carbonate polymère, Composé minéral, Métal transition composé, Composé organique, 6860B, 5277, 8110B.
Wicri :
- topic : Composé minéral.

English descriptors

KwdEn :
- Adhesion, Atomic layer method, Cracking, Crystal growth from vapors, Damage, Fractures, Inorganic compounds, Mechanical properties, Optical microscopy, Organic compounds, Plasma assisted processing, Polycarbonates, Strength functions, Structural models, Tensile stress, Thin films, Titanium oxides, Transition element compounds, Tribology.

Abstract

Interfacial adhesion of atomic layer deposited titania films on polycarbonate substrates with and without a water-plasma treatment has been studied using in situ observation during microtensile testing. Specific attention is paid to multiple tension-generated transverse cracks in the titania films when subjected to extemally applied uniaxial tensile stresses. The strength, fracture toughness and interfacial adhesion of the titania film on polycarbonate were deduced from theoretical models based on experimentally determined parameters. The tensile tests were conducted in a micromechanical tester positioned under an optical microscope allowing in situ viewing of cracking damage. The strain to initiate first cracking and the crack density as a function of strain were obtained. The in situ observations indicated different interfacial behaviour between water-plasma-treated and non-treated samples. It is shown that the water plasma treatment drastically improves the adhesion of the titania film to polycarbonate. Calculations show that the fracture energy required for film debonding in the plasma-treated polycarbonate is 5.9 J/m² compared to 2.5 J/m² for the untreated sample. A simple chemical structure model was used to explain the observed differences.

Affiliations:

Australie, France

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Le document en format XML

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<term>Atomic layer method</term>
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<term>Damage</term>
<term>Fractures</term>
<term>Inorganic compounds</term>
<term>Mechanical properties</term>
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<term>Contrainte traction</term>
<term>Fracture</term>
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<front><div type="abstract" xml:lang="en">Interfacial adhesion of atomic layer deposited titania films on polycarbonate substrates with and without a water-plasma treatment has been studied using in situ observation during microtensile testing. Specific attention is paid to multiple tension-generated transverse cracks in the titania films when subjected to extemally applied uniaxial tensile stresses. The strength, fracture toughness and interfacial adhesion of the titania film on polycarbonate were deduced from theoretical models based on experimentally determined parameters. The tensile tests were conducted in a micromechanical tester positioned under an optical microscope allowing in situ viewing of cracking damage. The strain to initiate first cracking and the crack density as a function of strain were obtained. The in situ observations indicated different interfacial behaviour between water-plasma-treated and non-treated samples. It is shown that the water plasma treatment drastically improves the adhesion of the titania film to polycarbonate. Calculations show that the fracture energy required for film debonding in the plasma-treated polycarbonate is 5.9 J/m<sup>2</sup>
 compared to 2.5 J/m<sup>2</sup>
 for the untreated sample. A simple chemical structure model was used to explain the observed differences.</div>
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Enhanced adhesion of atomic layer deposited titania on polycarbonate substrates

Enhanced adhesion of atomic layer deposited titania on polycarbonate substrates

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri