Elastic properties of porous porcelain stoneware tiles
| Autor: | Eva Gregorová, Maria Chiara Bignozzi, Francesca Prete, Elisa Rambaldi, Willi Pabst |
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| Přispěvatelé: | Rambaldi, Elisa, Pabst, Willi, Gregorová, Eva, Prete, Francesca, Bignozzi, Maria Chiara |
| Rok vydání: | 2017 |
| Předmět: |
Materials Chemistry2506 Metals and Alloys
Materials science Surfaces Coatings and Film Sintering Ceramics and Composite 02 engineering and technology Phase composition 01 natural sciences Porcelain stoneware 0103 physical sciences Materials Chemistry medicine Composite material Porosity 010302 applied physics Elastic propertie Electronic Optical and Magnetic Material Process Chemistry and Technology Stiffness 021001 nanoscience & nanotechnology Microstructure Surfaces Coatings and Films Electronic Optical and Magnetic Materials Exponential function Ceramics and Composites medicine.symptom 0210 nano-technology |
| Zdroj: | Ceramics International. 43:6919-6924 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2017.02.114 |
| Popis: | Porcelain stoneware tiles are industrially processed by using high sintering temperatures and fast firing cycles that result in products characterized by an almost impervious surface layer surrounding a rather porous bulk material. Since mechanical properties are affected by porosity, the knowledge of the material stiffness is an important parameter to define the service behavior of tiles. In the present investigation, porcelain stoneware samples having different closed porosity were investigated in order to understand the influence of the porosity on the elastic constants of the materials. Based on the quantitative XRD phase composition, elastic constants have been calculated via Voigt-Reuss-Hill averaging, and the influence of porosity has been taken into account via power-law and exponential relations. It is shown that the effective elastic constants predicted by exponential and power-law relations are in agreement with experimental values. It may be concluded that for this class of materials, in the porosity range below 14–16%, both exponential and power-law relations are helpful tools to design tiles with controlled microstructure and tailored mechanical properties. |
| Databáze: | OpenAIRE |
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