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Evaluation of powder loading and flow properties of Al2O3 ceramic injection molding feedstocks treated with stearic acid

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dc.title Evaluation of powder loading and flow properties of Al2O3 ceramic injection molding feedstocks treated with stearic acid en
dc.contributor.author Hnátková, Eva
dc.contributor.author Hausnerová, Berenika
dc.contributor.author Filip, Petr
dc.relation.ispartof Ceramics International
dc.identifier.issn 0272-8842 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2019
utb.relation.volume 45
utb.relation.issue 16
dc.citation.spage 20084
dc.citation.epage 20090
dc.type article
dc.language.iso en
dc.publisher Elsevier
dc.identifier.doi 10.1016/j.ceramint.2019.06.273
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0272884219317821
dc.subject ceramic injection molding en
dc.subject aluminum oxide en
dc.subject critical solid loading en
dc.subject viscosity en
dc.subject surfactant en
dc.description.abstract Processability of ceramics via injection molding consists in reaching sufficiently high solid loading despite submicrometric size of Al2O3 ceramic particles with a correspondingly high specific surface area. High (critical) solid loading limits injection molding reflected by flow properties of the compounds. This paper is focused on the evaluation of the critical solid loading (CSL) parameter as well as reliable description of the flow properties. As surface active agents are usually incorporated in polymer binders, most often used stearic acid (SA) is combined with three different binders to achieve higher CSL. CSL is determined from evolution of mixing torque based on continuously increasing powder loading from 50 to 60 vol %. Flowability of Al2O3 feedstocks with a fixed powder loading (52 vol %) was analyzed with a capillary rheometer, and viscosity data were predicted by a master curve model representing a fixed functional structure with no adjustable (fitting) parameters. The only variables are shear rate and surface agent (SA) concentration. A deviation from the experimental data does not exceed an experimental error. © 2019 en
utb.faculty Faculty of Technology
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1008923
utb.identifier.obdid 43880534
utb.identifier.scopus 2-s2.0-85068045369
utb.identifier.wok 000488148100061
utb.identifier.coden CINND
utb.source j-scopus
dc.date.accessioned 2019-08-16T09:30:08Z
dc.date.available 2019-08-16T09:30:08Z
dc.description.sponsorship Ministry of Education, Youth and Sports of the Czech Republic - Program NPU I [L01504]; Grant Agency CR [17-26808S]
utb.ou Department of Production Engineering
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Hnátková, Eva
utb.contributor.internalauthor Hausnerová, Berenika
utb.fulltext.sponsorship This work was supported by the Ministry of Education, Youth and Sports of the Czech Republic – Program NPU I (LO1504). The author (P. F.) wishes to acknowledge the Grant Agency CR for the financial support of Grant Project No. 17-26808S. The authors would like to thank Chiara Barretta for her contribution to the torque measurements and
utb.wos.affiliation [Hnatkova, Eva; Hausnerova, Berenika] Tomas Bata Univ Zlin, Fac Technol, Dept Prod Engn, Vavreckova 275, Zlin 76001, Czech Republic; [Hnatkova, Eva; Hausnerova, Berenika] Tomas Bata Univ Zlin, Univ Inst, Ctr Polymer Syst, Trida T Bati 5678, Zlin 76001, Czech Republic; [Filip, Petr] Czech Acad Sci, Inst Hydrodynam, Patankou 5, Prague 16612, Czech Republic
utb.scopus.affiliation Department of Production Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, Zlín, 760 01, Czech Republic; Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, Zlín, 760 01, Czech Republic; Institute of Hydrodynamics, Czech Academy of Sciences, Pod Patankou 5, Prague, 166 12, Czech Republic
utb.fulltext.projects LO1504
utb.fulltext.projects 17-26808S
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