The Experts below are selected from a list of 123 Experts worldwide ranked by ideXlab platform
N Tamsu - One of the best experts on this subject based on the ideXlab platform.
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the role of viscosity on microstructure development and Stain Resistance in porcelain stoneware tiles
Journal of The European Ceramic Society, 2010Co-Authors: Ende Suvaci, N TamsuAbstract:Abstract Effect of composition on viscosity of porcelain stoneware tiles and role of the viscosity on microstructure development and Stain Resistance in porcelain stoneware tiles were investigated. The viscosity of the tiles was successfully measured by a thermomechanical analyzer. Na2O/K2O ratio was used as a parameter to change the viscosity. As the Na2O/K2O ratio increases, the viscosity decreases. This reduction in the viscosity results in improvement of microstructure (i.e., spherical pore morphology and reduced closed porosity) and usually increases the Stain Resistance significantly. However, too low viscosity may also cause deformation of the tile during production. Therefore, the viscosity of the tiles should be carefully controlled and it should lie between a lower limit (in this study this value is between 107.93 and ∼108.35 P) and an upper limit (in this study this value is 108.67 P) to achieve high Stain resistant porcelain tiles with no deformation.
Oscar Rubem Klegues Montedo - One of the best experts on this subject based on the ideXlab platform.
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laser assisted glass based sealing of polished porcelain stoneware tile surface to increase Stain Resistance
Journal of The European Ceramic Society, 2020Co-Authors: Camila De M Striede, Francisco Ratusznei, Milto Pereira, Oscar Rubem Klegues MontedoAbstract:Abstract This study aims to develop a new approach for the permanent sealing of surface pores on polished porcelain stoneware tiles, using ceramic frits for the filling pores, followed by laser-sealing to ensure the fixation of the applied material. The laser-sealing parameters compatible with the ceramic substrate were focus height (z) of 105 mm, scan speed (v) of 2640 mm.min−1, and power values of 750, 800, and 850 W. In order to define the working parameters, three ceramic frits with 30, 50, and 70 wt.% solid contents were tested by sealing at the mentioned powers. High Stain resistant polished stoneware tiles were obtained using frit 1 and frit 3 with 50 and 70 wt.% solid contents, respectively, and the proposed procedure. High ease of cleaning is obtained related to the current treatment, demonstrating its suitability for improving the Stain Resistance for meeting the ISO 13006:2012 requirements.
Anselmo O Oschi - One of the best experts on this subject based on the ideXlab platform.
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effect of feldspar particle size on the porous microstructure and Stain Resistance of polished porcelain tiles
Journal of The European Ceramic Society, 2012Co-Authors: H J Alves, Fabio G Melchiades, Anselmo O OschiAbstract:The final porosity of porcelain tiles results from the incomplete densification of the material during the stages of processing. The use of raw materials such as feldspar, with a high potential for forming liquid phase during sintering, contributes to eliminate porosity when a suitable heating cycle is employed. This paper presents the results of a study that investigated the effect of the particle size distribution (PSD) of feldspar on the formation of pores in the green compact and the final product, using Stain Resistance as an evaluation parameter of surface porosity. To this end, the feldspar used in a standard paste of technical porcelain was milled under different conditions to produce the desired changes in its PSD. The groundbreaking results indicate that slight changes in the milling conditions of feldspar can significantly alter the porous microstructure of the material and the Stain Resistance of the polished tile surface. © 2012 Elsevier Ltd. All rights reserved.
Ende Suvaci - One of the best experts on this subject based on the ideXlab platform.
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the role of viscosity on microstructure development and Stain Resistance in porcelain stoneware tiles
Journal of The European Ceramic Society, 2010Co-Authors: Ende Suvaci, N TamsuAbstract:Abstract Effect of composition on viscosity of porcelain stoneware tiles and role of the viscosity on microstructure development and Stain Resistance in porcelain stoneware tiles were investigated. The viscosity of the tiles was successfully measured by a thermomechanical analyzer. Na2O/K2O ratio was used as a parameter to change the viscosity. As the Na2O/K2O ratio increases, the viscosity decreases. This reduction in the viscosity results in improvement of microstructure (i.e., spherical pore morphology and reduced closed porosity) and usually increases the Stain Resistance significantly. However, too low viscosity may also cause deformation of the tile during production. Therefore, the viscosity of the tiles should be carefully controlled and it should lie between a lower limit (in this study this value is between 107.93 and ∼108.35 P) and an upper limit (in this study this value is 108.67 P) to achieve high Stain resistant porcelain tiles with no deformation.
Camila De M Striede - One of the best experts on this subject based on the ideXlab platform.
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laser assisted glass based sealing of polished porcelain stoneware tile surface to increase Stain Resistance
Journal of The European Ceramic Society, 2020Co-Authors: Camila De M Striede, Francisco Ratusznei, Milto Pereira, Oscar Rubem Klegues MontedoAbstract:Abstract This study aims to develop a new approach for the permanent sealing of surface pores on polished porcelain stoneware tiles, using ceramic frits for the filling pores, followed by laser-sealing to ensure the fixation of the applied material. The laser-sealing parameters compatible with the ceramic substrate were focus height (z) of 105 mm, scan speed (v) of 2640 mm.min−1, and power values of 750, 800, and 850 W. In order to define the working parameters, three ceramic frits with 30, 50, and 70 wt.% solid contents were tested by sealing at the mentioned powers. High Stain resistant polished stoneware tiles were obtained using frit 1 and frit 3 with 50 and 70 wt.% solid contents, respectively, and the proposed procedure. High ease of cleaning is obtained related to the current treatment, demonstrating its suitability for improving the Stain Resistance for meeting the ISO 13006:2012 requirements.