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Article
The Effects of Silica on the Properties of Vitreous Enamels
Materials
  • Signo Tadeu Dos Reis, Missouri University of Science and Technology
  • Mike Koenigstein
  • Liang Fan
  • Genda Chen, Missouri University of Science and Technology
  • Luka Pavic
  • Andrea Mogus-Milankovic
Abstract

Ground coat enamels for low carbon steel that contain silica as a mill addition have been developed to study the changes of their properties. Acid-resistant commercial enamel where silica addition was varied from 0 to 10.0 wt % was used for this investigation. The effects of the addition on the corrosion resistance, thermal properties, electrical properties, and mechanical adherence of the enamel to low carbon steel were studied. The corrosion resistance of the steel enameled coupons was tested using a salt spray (fog) apparatus for time periods reaching 168 h at room temperature. It was found that, although the density was not affected, the adherence decreased with an increase in silica content. As expected, the silica addition decreased the coefficient of thermal expansion, which is directly related to the increasing stress between the glass and steel in accordance with the adherence results. A mill addition of 7.5 wt% of silica to the samples was sufficient to obtain adequate enamel adherence and good corrosion resistance. Furthermore, the addition of silica influenced the electrical conductivity and dielectric permittivity measurements at room temperature and the conductivity measured in a wide frequency range (1 Hz-1 MHz). The dielectric permittivity measured at 1 MHz showed decrease after the addition of up to 7.5 wt% of silica.

Department(s)
Materials Science and Engineering
Second Department
Civil, Architectural and Environmental Engineering
Keywords and Phrases
  • Acid resistant,
  • Glass enamel,
  • Raman spectroscopy,
  • Silica
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2019 The Authors, All rights reserved.
Creative Commons Licensing
Creative Commons Attribution 4.0
Publication Date
1-1-2019
Citation Information
Signo Tadeu Dos Reis, Mike Koenigstein, Liang Fan, Genda Chen, et al.. "The Effects of Silica on the Properties of Vitreous Enamels" Materials Vol. 12 Iss. 2 (2019) ISSN: 1996-1944; 1996-1944
Available at: http://works.bepress.com/genda-chen/425/