Development of ZnO white opaque glazes

Reference Presenter Authors
(Institution)
Abstract
16-031 Magdalena Lesniak Lesniak, M.(AGH University od Science and Technology); Partyka, J.(AGH University od Science and Technology); Gajek, M.(AGH University od Science and Technology); Sitarz, M.(AGH University od Science and Technology); Alternative white glazes with a good opacity and a high degree of whiteness without the addition of ZrSiO4 were obtained from raw materials. The opaque effect was achieved due to crystallization of willemite, which was identified as a major crystalline phase in the system. The glazes were characterized by a high whiteness value L*, greater than 90 in the CIELAB colour space. The microstructure and structure of the glazes were measured with the use of a Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and Magic Angle Spinning Nuclear Magnetic Resonance (MAS NMR). The topography of glazes surfaces, as well as the roughness level (Ra), were measured with the use of a confocal microscope.  


Acknowledgements: 
This work was supported by the National Science Centre, Poland Grant No 2015/19/N/ST8/00486.
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