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The impact of wollastonite and dolomite on chemical durability of matte fast-fired raw glazes

Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

15 Sitaatiot (Scopus)

Abstrakti

Controlled share of wollastonite and dolomite in the recipe was decisive for achieving raw glazes with a matte surface in a fast-firing process. The surface characteristics were studied for 25 experimental glazes containing 9–39 wt% wollastonite and 0–16 wt% dolomite. The glaze suspensions were applied on raw tiles and fired to 1215 °C in an industrial kiln. The chemical durability of the tiles was measured according to the standard ISO 10545-13. Further, the impact of exposure time on surface degradation was measured for 0.1 and 3 vol% HCl-solutions. The changes in the phase composition were studied with SEM/EDXA and XRD. The surface consisted of wollastonite and diopside, some residual quartz and corundum as well as amorphous phases. Wollastonite crystals severely decreased the durability while diopside crystals provided a durable matte surface. The results give guidelines for manufacturing matte and chemically durable fast-fired raw glazes.

AlkuperäiskieliEnglanti
Sivut3327-3337
Sivumäärä11
JulkaisuJournal of the European Ceramic Society
Vuosikerta40
Numero8
DOI - pysyväislinkit
TilaJulkaistu - 18 maalisk. 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Rahoitus

Jaana Paananen and Linus Silvander are thanked for helping out with the experimental work. The financial support from the Åbo Akademi Johan Gadolin Process Chemistry Centre is acknowledged.

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