Freeze casted porous ceramics

Vista sencilla de ítem
dc.contributor.advisoreossa@eafit.edu.cospa
dc.contributor.authorGil-Durán, Santiago
dc.coverage.spatialMedellín de: Lat: 06 15 00 N degrees minutes Lat: 6.2500 decimal degrees Long: 075 36 00 W degrees minutes Long: -75.6000 decimal degreeseng
dc.creator.degreeDoctor in Engineeringspa
dc.creator.emailsgildura@eafit.eduspa
dc.creator.grantorSupport for this study was provided in part by a grant from Universidad EAFIT and by Departamento Administrativo de Ciencia Tecnología e Innovación, Colciencias by contract 0210-2013.spa
dc.date.accessioned2020-08-21T16:21:05Z
dc.date.available2020-08-21T16:21:05Z
dc.date.issued2020
dc.description.abstractScientists have explored different manufacturing methods aiming at obtaining synthetic materials with controlled porosity, among them, Freeze Casting allows a control of the pore characteristics formed within the material by setting process variables like type of medium, particle size, solid content, inclusion of additives, freezing rate, etc. Despite of all the knowledge obtained about freeze casting, there still remain some questions to solve regarding processing-structure relationships, specifically the relations between cooling patterns during freezing and physical characteristics of the final material. The aim of this doctoral work is to understand the relations between cooling patterns during freezing and the structure at the macro and micro levels of the final freeze casted part. The current work comprises the development of a heat transfer model to efficiently and reliably predict the temperature evolution during freezing. In this way, it will be possible to recognize which are the process variables affecting the final pore morphology. The results of this work improved the fundamental knowledge of the process, serving as a tool to predict and control the microstructure obtained in the Freeze Casting process. The problem definition and goals of this work are presented in chapter 1. A brief description of the main literature on freeze casting is presented in chapter 2. The development of a numerical model that calculates the temperature distribution within the experiment domain was carried out in chapter 3. In chapter 4, an alumina tile was produced by freeze casting process in order to test the freezing device, coloidal suspension characteristics and sintering temperature of the sample. Additionally, an analytical model was proposed for predicting the thermal conductivity of the material. Chapter 5 evaluates the effect of solid content and freezing temperature on pore morphology and evaluates how these variables affect the temperature distribution within the experiment domain. Chapter 6 compares the steady solution of the numerical model and the pore morphology obtained experimentally under different process parameters. Finally, conclusions and future work for the study are presented in chapter 7.spa
dc.formatapplication/pdfeng
dc.identifier.ddc620.14 G463
dc.identifier.urihttp://hdl.handle.net/10784/17541
dc.language.isospaspa
dc.publisherUniversidad EAFITspa
dc.publisher.departmentEscuela de Ingenieríaspa
dc.publisher.placeMedellínspa
dc.publisher.programDoctorado en Ingenieríaspa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.localAcceso abiertospa
dc.subjectProcesamiento cerámicosspa
dc.subjectCerámicos porososspa
dc.subjectControl porosidadspa
dc.subject.keywordFreeze castingspa
dc.subject.keywordCeramics processingspa
dc.subject.keywordporous ceramicsspa
dc.subject.keywordcontrol of porosityspa
dc.subject.lembCERÁMICA INDUSTRIALspa
dc.subject.lembPOROSIDADspa
dc.subject.lembPLANTAS PROCESADORAS DE CERÁMICAspa
dc.subject.lembMATERIALES CERÁMICOSspa
dc.titleFreeze casted porous ceramicsspa
dc.typedoctoralThesiseng
dc.typeinfo:eu-repo/semantics/doctoralThesiseng
dc.type.hasVersionacceptedVersioneng
dc.type.localTesis Doctoralspa

Archivos

Bloque original
Mostrando 1 - 3 de 3
No hay miniatura disponible
Nombre:
Phd Thesis 2020 Santiago Gil D.pdf
Tamaño:
1.27 MB
Formato:
Adobe Portable Document Format
Descripción:
Trabajo de grado
Descargar
No hay miniatura disponible
Nombre:
Carta-aprobacion-trabajo-grado-eafit Santiago Gil D.pdf
Tamaño:
111.44 KB
Formato:
Adobe Portable Document Format
Descripción:
Carta de aprobación de tesis de grado
Descargar
No hay miniatura disponible
Nombre:
Carta-derechos-autor-eafit Santiago Gil D.pdf
Tamaño:
828.71 KB
Formato:
Adobe Portable Document Format
Descripción:
Formulario de autorización de publicación de obras
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
2.5 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar

Colecciones

Doctorado en Ingeniería (tesis)