Improvement of Ti Processing through Colloidal Techniques

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dc.contributor.author García das Neves, Roberto
dc.contributor.author Escribano Quintana, Juan Antonio
dc.contributor.author Ferrari, Begoña
dc.contributor.author Gordo Odériz, Elena
dc.contributor.author Sánchez-Herencia, A. J.
dc.date.accessioned 2013-05-17T10:11:54Z
dc.date.available 2013-05-17T10:11:54Z
dc.date.issued 2012-08-01
dc.identifier.bibliographicCitation Key Engineering Materials, 2012, v. 520, 335-340.
dc.identifier.issn 1013-9826
dc.identifier.uri http://hdl.handle.net/10016/16983
dc.description.abstract The colloid-chemistry control of metallic powders in aqueous slurries is proposed as a way to prepare Ti powders with small particle size for a better pressing behavior through the spray dry process. The chemical-physic behavior of titanium powders with two different particle size distributions dispersed in water has been studied by measuring the zeta potential as a function of pH, and dispersant concentration. The employment of poly-acrylic dispersants allowed the fabrication of stable slurries with solid contents up to 50 vol% that have been sprayed under different conditions to form agglomerates ranging between 50 and 200 µm. Conditions were selected to achieve spherical agglomerates formed by a broad distribution of particle sizes that shown excellent flowability. Agglomerates were pressed in a uniaxial die to measure the compressibility, showing an improvement in pressing behavior with respect to powders with bigger particle size. The sintering behavior is also improved, as values of 96 % of the theoretical density were obtained for compacts sintered in vacuum at 1100 ºC for 30 minutes.
dc.format.mimetype text/plain
dc.format.mimetype application/pdf
dc.language.iso eng
dc.rights © Trans Tech Publications
dc.subject.other Slurries
dc.subject.other Dispersant
dc.subject.other Spray dry
dc.subject.other Particle size distribution
dc.subject.other Water
dc.title Improvement of Ti Processing through Colloidal Techniques
dc.type article
dc.relation.publisherversion http://dx.doi.org/10.4028/www.scientific.net/KEM.520.335
dc.subject.eciencia Ingeniería Industrial
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.identifier.doi 10.4028/www.scientific.net/KEM.520.335
dc.rights.accessRights openAccess
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 335
dc.identifier.publicationlastpage 340
dc.identifier.publicationtitle Key engineering materials
dc.identifier.publicationvolume 520
dc.identifier.uxxi AR/0000012489
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