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Amorphous Alumina Barrier Coatings on Glass: MOCVD Process and Hydrothermal Ageing

Etchepare, Pierre-Luc and Baggetto, Loïc and Vergnes, Hugues and Samélor, Diane and Sadowski, Daniel and Caussat, Brigitte and Vahlas, Constantin Amorphous Alumina Barrier Coatings on Glass: MOCVD Process and Hydrothermal Ageing. (2016) Advanced Materials Interfaces, vol. 3 (n° 8). pp. 1-9. ISSN 2196-7350

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Official URL: http://dx.doi.org/10.1002/admi.201600014

Abstract

Amorphous alumina coatings are applied on the inner surface of glass containers aiming at improving their hydrothermal ageing barrier properties. A direct liquid injection technology is implemented in a metal-organic chemical vapor deposition (MOCVD) process to feed the reactor in a controlled and reproducible way with a solution of aluminum tri-isopropoxide (ATI) in anhydrous cyclohexane. Amorphous alumina coatings are characterized by X-ray diffraction, electron probe microanalysis, scanning electron microscopy, atomic force microscopy and scratch-test method. They are amorphous and hydroxylated at process temperatures between 360 and 420 °C and close to Al 2 O 3 stoichiometry between 490 and 560 °C. Hydrothermal ageing simulated by a standard sterilization cycle results in the increase of the root mean square of the surface of the coatings from ≈17 to 61 nm and in the increase of the porosity without affecting the adhesion of the coatings on the glass substrates.

Item Type:Article
Additional Information:Thanks to Wiley editor. The definitive version is available at http://onlinelibrary.wiley.com/ The original PDF of the article can be found at Advanced Materials Interfaces website : http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2196-7350
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Diane SAMELOR
Deposited On:24 Jun 2016 13:34

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