SANTOS, S.C.YAMAGATA, C.CAMPOS, L.L.MELLO-CASTANHO, S.R.H.2017-01-192017-01-192016SANTOS, S.C.; YAMAGATA, C.; CAMPOS, L.L.; MELLO-CASTANHO, S.R.H. Processing, microstructure and thermoluminescence response of biomorphic yttrium oxide ceramics. <b>Ceramics International</b>, v. 42, n. 11, p. 13291-13295, 2016. DOI: <a href="https://dx.doi.org/10.1016/j.ceramint.2016.05.136">10.1016/j.ceramint.2016.05.136</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/27002.0272-8842http://repositorio.ipen.br/handle/123456789/27002The present work reports a fast-direct bio-prototyping process using Luffa Cylindrica vegetable sponge to produce biomorphic yttrium oxide ceramics with reticulated-porous architecture and thermoluminescence response. Processing parameters as rheology of yttrium oxide suspensions, bio-template surface treatment and thermal decomposition of bio-template were investigated. Shear thinning suspensions of 30 vol% yttrium oxide with apparent viscosity of 243mPa.s provided a successful impregnation of samples, whereby bio-templates with smooth ceramic layer and hierarchical reticulated architecture were formed. By thermal treatment at 1600 degrees C for 2 h biomorphic yttrium oxide ceramics with porous microstructure and TL response at 150 degrees C and lambda=550 nm were produced. The proposed fast direct bio-prototyping process is suitable for the production of ceramic components with complex shape and demonstrates potential for general applicability to any bio-template. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.13291-13295openAccessprocessingmicrostructurethermoluminescenceyttrium oxidesceramicsrare earthsrheologysurface treatmentspyrolysisArtigo de periódico114210.1016/j.ceramint.2016.05.136https://orcid.org/0000-0002-0155-9100https://orcid.org/0000-0001-7137-061394.23