Delbrücke, TiagoGouvêa, Rogério A.Moreira, Mário L.Raubach, Cristiane W.Varela, José Arana [UNESP]Longo, Elson [UNESP]Gonçalves, Margarete R.F.Cava, Sergio2014-05-272014-05-272013-06-01Journal of the European Ceramic Society, v. 33, n. 6, p. 1087-1092, 2013.0955-2219http://hdl.handle.net/11449/75517In this research report, a sintering process of porous ceramic materials based on Al2O3 was employed using a method where a cation precursor solution is embedded in an organic fibrous cotton matrix. For porous green bodies, the precursor solution and cotton were annealed at temperatures in the range of 100-1600°C using scanning electron microscopy (SEM) and thermogravimetric (TG) analysis to obtain a porous body formation and disposal process containing organic fibers and precursor solution. In a structure consisting of open pores and interconnected nanometric grains, despite the low porosity of around 40% (calculated geometrically), nitrogen physisorption determined a specific surface area of 14m2/g, which shows much sintering of porous bodies. Energy dispersive X-ray (EDX) and X-ray diffraction (XRD) analytical methods revealed a predominant amount of α-Al2O3 in the sintered samples. Thermal properties of the sintered Al2O3 fibers were obtained by using the Laser Flash which resulted in the lower thermal conductivity obtained by α-Al2O3 and therefore improved its potential use as an insulating material. © 2012 Elsevier Ltd.1087-1092engAl2O3Chemically synthesizedReplica method in organic matrixSintered porous bodyThermal propertiesAnalytical methodDisposal processEnergy dispersive x-rayGreen bodyLaser flashLow porosityLow thermal conductivityNanometricsOrganic fibersOrganic matrixPorous aluminaPorous bodiesPorous ceramic materialsPrecursor solutionsResearch reportsSintered samplesSintering processThermogravimetricAluminumCottonPhysisorptionScanning electron microscopyThermal conductivityThermodynamic propertiesThermogravimetric analysisX ray diffractionSinteringGravimetryScanning Electron MicroscopyThermal AnalysisThermal ConductivityThermal PropertiesX Ray DiffractionArtigo10.1016/j.jeurceramsoc.2012.11.009WOS:000315313900004Acesso restrito2-s2.0-84873077617