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Journal of Thermal Analysis and Calorimetry

, Volume 138, Issue 6, pp 4341–4347 | Cite as

Comparison of the impact of the addition of three alkaline earth metal oxides BaO, SrO and ZnO on sintering of glass–ceramic glazes from the SiO2–Al2O2–CaO–MgO–Na2O–K2O system

  • J. Partyka
  • K. Pasiut
  • P. JeleńEmail author
  • M. Leśniak
  • M. Sitarz
Article
  • 47 Downloads

Abstract

Glazes are the most important elements in the technology of producing the ceramic wares. They not only give aesthetic effects, like color and gloss, but also significantly contribute to the improvement of the functional properties of ceramic products. Improving the properties of glazes is a continuous task that is carried out in many research centers. This is also facilitated by the rapid development of research techniques and the development of more and more precise measuring devices. The presented work concerns the ordering of data on the role of selected alkaline earth metal oxides: barium, strontium and zinc oxides. To achieve the set goals, systematic test of samples was carried out. In the first step, characteristic temperatures were determined by means of using a high-temperature microscope and a mechanical dilatometer. Based on selected characteristic temperatures, the viscosity logarithm curves, as a function of temperature, were determined by means of the Vogel–Fulcher–Tamman equation. Next, the effects that occurred during thermal treatment in the temperature range 30–1230–400 °C were defined, by using differential scanning calorimetry techniques. The effect of selected oxides on the phase composition of samples after firing at 1230 °C was also determined. Obtained results allow drawing conclusions about significant differences between glazes modified with above-mentioned oxides and base glaze. Differences in the values of characteristic temperatures, the course of the viscosity curves as a function of temperature, various phase compositions and a description of the phenomena occurring during heating give full technological characteristics on the mentioned oxide modifiers of the properties of ceramic glazes.

Keywords

Ceramic glazes Modifying oxides Characteristic temperatures Phase composition Viscosity Thermal changes 

Notes

Acknowledgements

This work has been carried out as part of the Project Number 11.11.160.617 and research Project No. 2015/19/N/ST8/00486 funded by the National Science Centre.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.Faculty of Material Science and CeramicsAGH University of Science and TechnologyKrakówPoland

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