STUDY OF ADHESION OF THE COATING SYSTEM TO VITREOUS ENAMEL COAT

1 PODJUKLOVÁ Jitka
Co-authors:
2,4 HRABOVSKÁ Kamila 1 SIOSTRZONEK René 1 VERLÍK Jiří 3 HANÁK Miroslav
Institutions:
1 VŠB - Technical University of Ostrava, Faculty of Mechanical Engineering, Ostrava, Czech Republic, EU
2 VŠB - Technical University of Ostrava, Department of Physics, Ostrava, Czech Republic, EU
3 ČEZ, a.s., Dlouhé Stráně Hydro Power Plant, Loučná nad Desnou, Czech Republic, EU
4 Regional materials science and technology centre, VŠB - Technical University of Ostrava, Czech Republic, EU
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
1177-1181
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
17 views / 6 downloads
Abstract

The contribution deals with study of adhesion organic coating systems for the repair of a damaged vitreous enamel coat. Vitreous enamel is resulting product of the physiochemical reactions in the process of heat glass forming of the complicated chemical constitution with next components of the inorganic character and connecting nesting characteristics of the glass and ceramic with ability of the adhesion to metal. Damage of the vitreous enamel coat arises particularly during of transport the product and its handling and assembly of enamelled parts for agricultural, energy and water industry. For experimental works were used two types of coating systems on the basis epoxy concrete resin and polysiloxane. Experimental results show that the vitreous enamel coat can be repaired by the above-mentioned organic coating systems. According to the results of adhesion tests according to EN ISO 16276-1 (Pull-off Test) and EN ISO 16276-2 (Cross-cut Test), the adhesion of organic coatings on vitreous enamel coat is suitable in value in the range from 4.0 to 5.2 MPa (according to Pull-off Test) and degree classification in the range from 0 to 4 (according to Cross-cut Test and according to pre-treatment of surface vitreous enamel coat). Use of thus repaired vitreous enamel coat is limited by the properties of the organic coating in contact with aggressive corrosive environment, temperature, drinking water and food.

Keywords: Vitreous enamel coat, organic coating system, adhesion, surface treatment
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