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Tytuł:
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Operational Variables on the Processing of Porous Titanium Bodies by Gelation of Slurries with an Expansive Porogen.
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Autorzy:
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Sanchez-Herencia AJ; Institute for Ceramic and Glass (ICV-CSIC), Kelsen, 5, 28049 Madrid, Spain.
Gonzalez Z; Institute for Ceramic and Glass (ICV-CSIC), Kelsen, 5, 28049 Madrid, Spain.; Chemical Engineering Department, Faculty of Science, Campus de Rabanales, Universidad de Cordoba, Building Marie-Curie, 14071 Cordoba, Spain.
Rodriguez A; Chemical Engineering Department, Faculty of Science, Campus de Rabanales, Universidad de Cordoba, Building Marie-Curie, 14071 Cordoba, Spain.
Molero E; Institute for Ceramic and Glass (ICV-CSIC), Kelsen, 5, 28049 Madrid, Spain.; Department of Mechanical Engineering, University of Cordoba, Medina Azahara Avenue, 14071 Cordoba, Spain.
Ferrari B; Institute for Ceramic and Glass (ICV-CSIC), Kelsen, 5, 28049 Madrid, Spain.
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Źródło:
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Materials (Basel, Switzerland) [Materials (Basel)] 2021 Aug 22; Vol. 14 (16). Date of Electronic Publication: 2021 Aug 22.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: May 2010- : Basel, Switzerland : MDPI
Original Publication: Basel, Switzerland : Molecular Diversity Preservation International, 2008-2010.
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References:
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Acta Biomater. 2014 Oct;10(10):4058-70. (PMID: 24956564)
Carbohydr Polym. 2014 Oct 13;111:80-8. (PMID: 25037332)
Biomaterials. 2006 Mar;27(8):1223-35. (PMID: 16169073)
Biomaterials. 2016 Mar;83:127-41. (PMID: 26773669)
ACS Biomater Sci Eng. 2018 Jan 8;4(1):1-39. (PMID: 33418675)
Mater Sci Eng C Mater Biol Appl. 2013 Mar 1;33(2):864-9. (PMID: 25427499)
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Grant Information:
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P2018/NMT-4411 Comunidad de Madrid; PID2019-106631GB-C42 Agencia Estatal de Investigación; IJCI-2016-28538 Ministerio de Economía y Competitividad
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Contributed Indexing:
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Keywords: colloidal processing; compression resistance; experimental design; gelation; porogen; porosity
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Entry Date(s):
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Date Created: 20210827 Latest Revision: 20210830
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Update Code:
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20240104
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PubMed Central ID:
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PMC8399247
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DOI:
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10.3390/ma14164744
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PMID:
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34443266
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Colloidal processing techniques, based on the suspension of powders in a liquid, are very versatile techniques to fabricate porous structures. They can provide customized pores, shapes and surfaces through the control of operational parameters, being the base of the alternative additive manufacture processes. In this work disperse and stable titanium aqueous slurries has been formulated in order to process porous materials by the incorporation of methylcellulose (MC) as a gelation agent and ammonium bicarbonate as an expansive porogen. After casting the slurries and heating at mild temperatures (60-80 °C) the methylcellulose gels and traps the gas bubbles generated by the ammonium bicarbonate decomposition to finally obtain stiff porous green structures. Using an experimental design method, the influence of the temperature as well as the concentration of gelation agent and porogen on the viscosity, apparent density and pore size distribution is analyzed by a second-order polynomial function in order to identifying the influence of the operating variables in the green titanium porous compact. After sintering at 1100 °C under high vacuum, titanium sponges with 39% of open porosity and almost no close porosity were obtained.
