Mostrando ítems 1-10 de 49
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Compositional effects on the crosslink density of Ca–(Mg)–(Y)–Si–Al–oxyfluoronitride glasses
The effects of fluorine and nitrogen substitution for oxygen in aluminosilicate glasses, effectively oxyfluoronitride (OFN) glasses, modified by calcium, calcium–yttrium or calcium–magnesium on thermal and physical/mechanical ...
On the source inversion of fugitive surface layer releases. Part I. Model formulation and application to simple sources
Source inversion by dispersion modelling of fugitive particulate matter (PM) emissions entails considerable difficulty. Fugitive PM sources are rarely steady or point sources. They occur near the ground, where there are ...
Diffuse PM10emission factors associated with dust abatement technologies in the ceramic industry
In this paper, an analytical methodology is proposed for estimating diffuse dust emissions from bulk solids managing (storage, handling, and transport) activities in the ceramic industry. The methodology is based on ...
Calcium carbonate thermal decomposition in white-body wall tile during firing. II. Influence of body thickness and calcite content
The thermal decomposition process of the calcium carbonate (calcite powder) contained in porous ceramic pieces, with the same composition as that used industrially to manufacture white-firing wall tile bodies, was studied ...
Microstructure and photocatalytic activity of suspension plasma sprayed TiO2 coatings on steel and glass substrates
In this study, TiO2 coatings were deposited by suspension plasma spraying (SPS) from a commercial TiO2 nanoparticle suspension on two different substrates: a standard stainless steel and a Pyrex glass. Coatings were sprayed ...
Hardness and Young's modulus distributions in atmospheric plasmas prayed WC–Co coatings using nanoindentation
A statistical indentation analysis of WC–Co coatings obtained by atmospheric plasma spray (APS) with two secondary plasma gases, H2 and He, was investigated using an instrumented indentation technique with the aim of ...
Relation between the scratch resistance and the chemical structure of organic-inorganic hybrid coatings
Organic–inorganic hybrid materials can be defined as materials combining organic and inorganic domains in a nanometric scale. The development of these organic–inorganic hybrids has achieved properties from both organic and ...
Correlation between the wear resistance, and the scratch resistance, for nanocomposite coatings
The nanoscratch test, used in this study, quantitatively characterizes the scratch behaviour of coatings. Some of the obtained parameters are plastic and elastic deformation, critical load to start the scratch, chipping ...
Study of the rheological behaviour of monomodal quartz particle beds under stress: a model for the shear yield functions of powders
A model is proposed that describes the yield locus of powders. The model is based on the adhesive contact of elastic spheres theory developed by Johnson, Kendall, and Roberts (JKR model). The proposed model improves the ...
Influence of composition on mechanical behaviour of porcelain tile. Part III: Effect of the cooling rate of the firing cycle
This paper is the third part of a study focusing on determining the influence of the porcelain tile composition on mechanical behaviour of sintered bodies. Tile compositions were prepared according to a simplex-centroid ...