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Fig. 9 | Heritage Science

Fig. 9

From: Release of lead from Renaissance lead-glazed ceramics from southern Denmark and northern Germany: implications from acetic acid etching experiments

Fig. 9

Projection of glaze compositions onto the lead-rich corner of the phase diagram Al2O3-SiO2-PbO. The Husum glazes fall close to the eutectic trough towards higher silica concentrations, while the Grøngaard glazes are in an intermediate region closer to the lead-rich corner. The projected liquidus temperature for most compositions is around 1073 K (800 °C) or below. See OSM Additional file 1: Fig. S1 for the full phase diagram. Temperatures are given in Kelvin. Modified after Chen et al. [38]

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