Sol-gel derived coatings for the conservation of steel

Erika Kiele; Jurate Senvaitiene; Asta Grigucevičiene; Rimantas Ramanauskas; Rimantas Raudonis; Aivaras Kareiva

doi:10.2298/PAC1502081K

Processing and Application of Ceramics (Jun 2015)

Sol-gel derived coatings for the conservation of steel

Erika Kiele,
Jurate Senvaitiene,
Asta Grigucevičiene,
Rimantas Ramanauskas,
Rimantas Raudonis,
Aivaras Kareiva

Affiliations

Erika Kiele: Department of Applied Chemistry, Faculty of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania
Jurate Senvaitiene: Department of Applied Chemistry, Faculty of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania; Pranas Gudynas Centre for Restoration, Lithuanian Art Museum, Rudninku 8, LT-01135 Vilnius, Lithuania
Asta Grigucevičiene: Center for Physical Sciences and Technology, Institute of Chemistry, A. Goštauto 9, LT-01108 Vilnius, Lithuaniaa
Rimantas Ramanauskas: Center for Physical Sciences and Technology, Institute of Chemistry, A. Goštauto 9, LT-01108 Vilnius, Lithuaniaa
Rimantas Raudonis: Department of Applied Chemistry, Faculty of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania
Aivaras Kareiva: Department of Inorganic Chemistry, Faculty of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania

DOI: https://doi.org/10.2298/PAC1502081K
Journal volume & issue: Vol. 9, no. 2
pp. 81 – 89

Abstract

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In this paper, sol-gel processing route has been applied and investigated for the conservation of steel. Nanosilica coatings on steel surface have been prepared using tetraethylorthosilicate (TEOS) as a starting material. The methyl-modified silica sols were obtained by mixing of 3 mas.% SiO2 sol solution with hexamethyldisilozane (HMDS). The surface of steel was coated by dip-coating technique. In order to compare the characteristics of coatings, the steel substrates were also coated with commercial polymers Paraloid B67, Cosmolloid H80 and Antik Patina. The surface morphology changes of the uncoated and coated specimens before and after photochemical ageing were investigated by scanning electron microscopy and atomic force microscopy. The structure of the prepared coatings was also investigated by FTIR spectroscopy. The hydrophobicity of surfaces was evaluated by contact angle measurements. Potentiodynamic measurements were obtained in order to compare corrosion parameters of the coatings.

Published in Processing and Application of Ceramics

ISSN: 1820-6131 (Print); 2406-1034 (Online)
Publisher: University of Novi Sad
Country of publisher: Serbia
LCC subjects: Technology: Chemical technology: Clay industries. Ceramics. Glass
Website: http://www.tf.uns.ac.rs/publikacije/PAC/index.html

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