Two series of glazes have been produced from different combinations of the same raw materials in the range of interest for sanitary-ware applications: they are designed to allow one to get insight into network-forming and network-modifying species. Fusibility tests and hot stage microscope observations show the influence of even low differences in the starting chemical compositions on the transformation temperatures. X-ray powder diffraction, wavelength dispersion spectrometry and scanning electron microscopy prove that: (i) zircon, the most abundant crystalline phase, is homogeneously distributed and decreases by a 3% from its starting value; (ii) the glass-phase of glaze has a quasi-uniform composition. X-ray synchrotron radiation micro-tomography shows that glaze porosity is 15% by volume, and voids are prevalently not interconnected and with size up to 50 μm. The linear thermal expansion of the glass phase of glaze ranges between 6 and 7 × 10 -6 °C -1, without apparent correlation with composition.
Influence of composition on some industrially relevant properties of traditional sanitary-ware glaze / A. Bernasconi, V. Diella, N. Marinoni, A. Pavese, F. Francescon. - In: CERAMICS INTERNATIONAL. - ISSN 0272-8842. - 38:7(2012), pp. 5859-5870.
|Titolo:||Influence of composition on some industrially relevant properties of traditional sanitary-ware glaze|
PAVESE, ALESSANDRO (Penultimo)
|Parole Chiave:||Thermal expansion; Glass-ceramics; Glaze; Micro-analytical methods; X-ray synchrotron radiation computed micro-tomography; Digital image analysis; Pore microstructure|
|Settore Scientifico Disciplinare:||Settore GEO/06 - Mineralogia|
|Data di pubblicazione:||2012|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.ceramint.2012.04.037|
|Appare nelle tipologie:||01 - Articolo su periodico|