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Título: | Polymeric sol-gel coatings as protective layers of aluminium alloys |
Autor: | Conde del Campo, Ana ; Durán, Alicia CSIC ORCID ; Damborenea, Juan de CSIC ORCID | Fecha de publicación: | 2003 | Editor: | Elsevier | Citación: | Progress in Organic Coatings 46: 288- 296 (2003) | Resumen: | Sol-gel route is an emerging technology to synthesize coatings of a wide variety of properties taylored. In this work three low temperature cured coatings has been studied to evaluate their protective properties in order to be used as protective barrier coatings for aluminium alloys with potential architectural and automotive applications. These three coatings are novel modified silane nanocomposites coatings obtained mixing two sols separately prepared: a pre-hydrolysed 3-glycidyloxypropyl trimethoxysilane (GPTS) with acidic catalyst and another obtained from tetraethylorthosilicate/methyltriethoxysilane (TEOS/MTES). Particulated coatings were obtained by addition of 25wt.% particles of Aerosil 300 and Aerosil R972, respectively. The protective properties of the coatings were evaluated by electrochemical impedance spectroscopy (EIS) which showed notably differences among them not only from the protective viewpoint but the hydrophobic nature of the coatings and the controlling corrosion mechanism in each case. © 2003 Elsevier Science B.V. All rights reserved. | URI: | http://hdl.handle.net/10261/74518 | DOI: | 10.1016/S0300-9440(03)00014-6 | Identificadores: | doi: 10.1016/S0300-9440(03)00014-6 issn: 0300-9440 |
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