Chemical durability of glazed surfaces

Linda Fröberg, Thomas Kronberg, Stina Törnblom, Leena Hupa*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

37 Citations (Scopus)

Abstract

Chemical durability of glazes is previously mostly studied as corrosion of the glassy phase. In this work the focus is on corrosion tendency of the typical crystalline phases in raw glazes. Fifteen experimental glazes were ball-milled of commercial raw materials. After fast-firing in industrial kiln and traditional firing in laboratory furnace the glazes were immersed in aqueous solutions of different pH. Changes in the phase composition of the surfaces were analysed with visual examination, XRD and SEM/EDX applying a procedure allowing to study the same crystal both before and after immersion. The results indicate that wollastonite type crystals were attacked in all but the most alkaline solutions. Diopside, quartz and corundum crystals did not show any marked attack. The interfacial layer around feldspar crystals as well as the glassy phase in the glazes corroded in the most acidic and alkaline environments.

Original languageEnglish
Pages (from-to)1811-1816
Number of pages6
JournalJournal of the European Ceramic Society
Volume27
Issue number2-3
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

Keywords

  • Corrosion
  • Glass
  • Glaze
  • Grain boundaries
  • Interfaces

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