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.

配方中控制的硅灰石和白云石份额对于在快速烧制过程中获得具有哑光表面的生釉具有决定性作用。研究了25种含9–39 wt％硅灰石和0–16 wt％白云石的实验釉的表面特性。将釉料悬浮液涂在未加工的瓷砖上，并在工业窑炉中烧至1215°C。根据标准ISO 10545-13测量瓷砖的化学耐久性。此外，对于0.1和3体积％的HCl溶液，测量了暴露时间对表面降解的影响。用SEM / EDXA和XRD研究了相组成的变化。表面由硅灰石和透辉石，一些残留的石英和刚玉以及非晶相组成。硅灰石晶体严重降低了耐久性，而透辉石晶体提供了持久的哑光表面。