Mostrando ítems 1-10 de 73
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Optimization of the technologycal properties of porcelain tile bodies containing rice straw ash using the deseign of experiments methodology
This study examines the effects of replacing fluxing and filler materials with rice straw ash (RSA) in manufacturing porcelain stoneware tile, using the design of experiments (DOE) methodology. The results of the ...
Microstructure and indentation mechanical properties of YSZ nanostructured coatings obtained by suspension plasma spraying
A commercial nanosuspension of yttria-stabilised zirconia (YSZ) was successfully deposited on austenitic stainless steel substrate by suspension plasma spraying technique (SPS). A SG-100 torch with internal radial injection ...
Polishing of Porcelain Tiles in Industrial- and Laboratory-scale
(German Ceramic Society, 2013)
This work reports the design and use of a laboratory-scale tribometer and a new developed tool-holder to reproduce the industrial polishing process for ceramic tiles in laboratory-scale. The mechanical conditions in a ...
Porcelain tile: Almost 30 years of steady scientific-technological evolution
Despite the great global significance of porcelain tile manufacture, the scientific activity in porcelain tile's almost 30-year existence does not match the importance of the business. Although scientific output has been ...
Thermal behaviour of multilayer and functionally-graded YSZ/Gd2Zr2O7 coatings
Zirconates with pyrochlore structure, such as Gd2Zr2O7, are new promising thermal barrier coatings because of their very low thermal conductivity and good chemical resistance against molten salts. However, their coefficient ...
Microstructure and photocatalytic activity of APS coatings obtained from different TIO2 nanopowders
In recent years, intense research has shown that thermal spray techniques, especially atmospheric plasma spraying (APS), can be used to obtain nanostructured TiO2 coatings with effective photocatalytic activity. This ...
Evaluation of texture distribution during the industrial polishing process of porcelain stoneware tiles
The present work addresses the distribution of texture over the surface of porcelain stoneware tiles due to kinematics imposed by industrial polishing process. The scratching process was simulated using a computational ...
Atmospheric plasma spraying coatings from alumina–titania feedstock comprising bimodal particle size distributions
(Copyright © Elsevier, 2013)
In this work, Al2O3–13 wt% TiO2 submicron-nanostructured powders were deposited using atmospheric plasma spraying. The feedstocks were obtained by spray drying two starting suspensions of different solids content, prepared ...
Large scale synthesis of nanostructured zirconia-based compounds from freeze-dried precursors
Nanocrystalline zirconia powders have been obtained at the multigram scale by thermal decomposition of precursors resulting from the freeze-drying of aqueous acetic solutions. This technique has equally made possible to ...
On the underestimated effect of the starch ash on the characteristics of low cost ceramic membranes
Starches are commonly used as a pore generator in the fabrication of low-cost ceramic membranes, since they are cheap, innocuous, environmentally friendly and easy to burn. Nevertheless, the influence of starches residues ...