Amorphous Alumina Coatings on Glass Bottles Using Direct Liquid Injection MOCVD for Packaging Applications

Abstract:

In the field of packaging, coatings are commonly applied on containers to avoid interactions between them and their content. For glass bottles, application of a thin film prevents interactions with the phase in contact and consequently the alteration of surface properties of the latter. In this article, we propose an innovative way to apply amorphous alumina coatings on glass bottles by metalorganic chemical vapor deposition from aluminum tri-isopropoxide. A numerical model, using the Computational Fluid Dynamics code FLUENT, has been developed to calculate local profiles of gas flow, temperature, concentration and deposition rates into the reactor. The sub-micrometric alumina films have been deposited at reduced pressure between 480°C and 670°C. Uniform thickness profiles have been determined on cross sections over the length of the bottle and have been successfully simulated. Strongly improved hydrolytic resistance with regard to the uncoated bottles reveals the excellent performance of the films.

• Periodical: Advances in Science and Technology (Volume 91)
• Pages: 117-122
• DOI: https://doi.org/10.4028/www.scientific.net/AST.91.117
• Online since: October 2014
• Authors: P.L. Etchepare*, H. Vergnes, D. Samélor, D. Sadowski, C. Brasme, B. Caussat, C. Vahlas
• Keywords: Aluminum Tri-Isopropoxide, Amorphous Alumina, Complex Geometry, Direct Liquid Injection, Hydrolytic Resistance, MOCVD, Process Modeling

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