Alpha-alumina synthesis

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dc.contributor.authorMunhoz A.H.
dc.contributor.authorda Silva H.S.
dc.contributor.authorYamamoto M.V.
dc.contributor.authorMasson T.J.
dc.contributor.authorde Oliveira M.O.
dc.contributor.authorde Miranda L.F.
dc.contributor.authorAndrades R.C.
dc.contributor.authorPeres R.M.
dc.date.accessioned2024-03-12T23:59:51Z
dc.date.available2024-03-12T23:59:51Z
dc.date.issued2018
dc.description.abstract© 2018 Trans Tech Publications, Switzerland.The development of ceramic matrix composites (CMCs) is currently of great importance in the field of ballistic protection. For that purpose, alumina, silicon carbide and boron carbide are usually used in civil and military armor. Combination of different materials results in increasingly lighter and tougher composite materials, which replace conventional materials in many applications, including aviation, aerospace, military, naval, and sports industry. The production of nanoparticle powders and nanostructured bodies may find many uses in CMCs. In this study, pseudoboehmite powders was synthesized through the sol-gel method. The main goal of this work was to obtain alpha-alumina from nanosized pseudoboehmite particles, aiming to improve the densification and reduction of sintering temperature of alumina. Both pseudoboehmite and alpha-alumina obtained might be used also as raw material for CMCs. The gel of pseudoboehmite, which was derived from aluminum nitrate and ammonium hydroxide, was calcined, thus originating the alpha-alumina used in this study. The powders were characterized by: X-ray diffraction (XRD), nitrogen adsorption isotherm, with specific surface area measured by BET method, thermogravimetric analysis (TG) and differential thermal analysis (DTA). The data show that the alpha-alumina obtained by burning the pseudoboehmite was highly pure.
dc.description.firstpage27
dc.description.lastpage32
dc.description.volume912 MSF
dc.identifier.doi10.4028/www.scientific.net/MSF.912.27
dc.identifier.issn1662-9752
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/35642
dc.relation.ispartofMaterials Science Forum
dc.rightsAcesso Restrito
dc.subject.otherlanguageAlpha-alumina
dc.subject.otherlanguageCeramics
dc.subject.otherlanguageGamma-alumina
dc.subject.otherlanguagePseudoboehmite
dc.titleAlpha-alumina synthesis
dc.typeArtigo de evento
local.scopus.citations2
local.scopus.eid2-s2.0-85042470649
local.scopus.subjectAlpha alumina
local.scopus.subjectCeramics
local.scopus.subjectConventional materials
local.scopus.subjectDifferential thermal analyses (DTA)
local.scopus.subjectGamma alumina
local.scopus.subjectNitrogen adsorption isotherm
local.scopus.subjectPseudo-boehmite
local.scopus.subjectSintering temperatures
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85042470649&origin=inward
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