Listar por tema "Rheology"
Mostrando ítems 1-9 de 9
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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 ... -
Bioactive glass suspensions preparation for suspension plasma spraying
Elsevier (2016-06)A bioactive glass was dry-milled and sieved in order to obtain powders with particle size finer than 63 μm. Two suspensions, with different particle size distribution (D50 = 8.3 μm and D50 = 2.2 μm), were subsequently ... -
Determination of the packing fraction of silica naoparticles from the rheological and viscoelastic measurements of nanofluids
elsevier (2012-10)Nanofluids have become of great interest due to the excellent properties and reduced size of nanoparticles making them useful for different applications. The agglomeration of nanoparticles depends on the interparticle ... -
Dispersion of mixtures of submicrometer and nanometre sized titanias to obtain porous bodies
Elsevier (2013-12)The stability and rheological behaviour of bimodal titania suspensions was studied. Bimodal mixtures were prepared by mixing nanosized TiO2 powders with an average primary size of ∼20–40 nm and surface area of ∼50 m2 g−1 ... -
Dispersion of TiO2nanopowders to obtain homogeneous nanostructured granules by spray-drying
Elsevier (2011)This work deals with the dispersion and stabilisation of nanosized TiO2 particles in an aqueous medium as a first step in the preparation of spray-dried nanostructured powders. A colloidal route leading to the production ... -
Microfluidic rheology: A new approach to measure viscosity of ceramic suspensions at extremely high shear rates
Elsevier ScienceDirect (2020-12-19)This paper describes the operation principles of a micro-scale rheometry equipment based on the technology of microchannels on a chip and compares it with a conventional macro-scale rotational rheometer. Both techniques ... -
Preparation of high solids content nano-titania suspensions to obtain spray-dried nanostructured powders for atmospheric plasma spraying
Elsevier (2012)Nanosized TiO2powder with an average primary size of ∼20 nm and surface area of ∼50 m2/g (Aeroxide®P25, Degussa-Evonik, Germany) was used as starting material. A colloidal titania suspension from the same supplier was also ... -
Sheets of branched poly(lactic acid) obtained by one step reactive extrusion calendering process: Melt rheology analysis
Budapest University of Technology and Economics Department of Polymer Engineering (2013)One-step reactive extrusion-calendering process (REX-Calendering) was used in order to obtain sheets of 1mm from two PD,L-LA extrusion grades modified with a styrene-acrylic multifunctional oligomeric agent. In a preliminary ... -
Study of the rheological behaviour of monomodal quartz particle beds under stress: a model for the shear yield functions of powders
Elsevier (2011-09-15)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 ...