Evaluation of glauconite rock color stability during firing
Source abstract
Abstract
Abstract The paper analyses the influence of the firing temperature on the mineralogical composition and color stability of glauconite rock—a potential natural color-changing additive in ceramics. By XRD, Mossbauer spectroscopy and colorimetric analysis it has been established that the tint of glauconite rocks' color depends on the amount of iron incorporated into hematite and magnesioferrite. The intensity of red color rises as the amount of iron in hematite increases. The ceramic body becomes darker, when more iron is incorporated into magnesioferrite and the difference between the amount of iron in magnesioferrite and hematite is higher. Firing temperature intervals in which the color of glauconite rocks does not change have been determined. The color of the rock in each interval remains stable but the tint of the ceramic body fired in different temperature ranges varies. Therefore, glauconite rock is suitable for adjustment of the color of easily fusible clay.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Pigment Synthesis and Properties · Cultural Heritage Materials Analysis · Mineralogy and Gemology Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (50)
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