4.6 Article

Influence of the Grain Size Distribution of the Limestone Additives on the Color Properties and Phase Composition of Sintered Ceramic Materials Based on Cream-Firing Clays

期刊

MATERIALS
卷 15, 期 7, 页码 -

出版社

MDPI
DOI: 10.3390/ma15072694

关键词

color; phase composition; cream-firing clays; limestone; sintering process

资金

  1. Polish Ministry of Science and Higher Education [16.16.160.557]
  2. EU [POWR.03.02.00-00-I038/16-00]

向作者/读者索取更多资源

The study found that the addition of calcium carbonate alters the color properties of the materials, increasing the yellow color factor while decreasing the red color factor and brightness. Additionally, the grain size distribution of the additive significantly influences the phase composition of the materials and their color properties.
The study focused on determining color changes in materials made of cream-firing clays from the Opoczno region (Poland) due to the addition of calcium carbonate in the form of limestone. Moreover, the influence of the grain size distribution of this additive on the color properties of the materials and their phase composition was determined. Test samples were prepared using theplastic method and fired at four different temperatures: 1120, 1140, 1160 and 1180 degrees C. The color properties of the surface of ceramic materials were determined in CIE-Lab color space using a colorimeter. Quantitative phase analysis was performed using the Rietveld method. The research showed that the addition of calcium carbonate causes an increase in the yellow color factor and a decrease in the red color factor and the brightness of the material. Moreover, it was proven that the grain size distribution of the additive used significantly influences the phase composition of the materials, thus determining the values of physical properties and the color of the materials.

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