DEMAT - Departamento de Engenharia de Materiais
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Article Synthesis and characterization of self-healing silica microspheres doped with epoxy resin and methyl-ethyl-ketone catalyst by a modified Stöber method(Brazilian Journal of Chemical Engineering, 2025) Oliveira, Theogenes S.; Batista, Willame G. S.; Fernandes, Rafael S.; Balaban, Rosângela C.; Freitas, Júlio C. O.; Martinelli, Antonio Eduardo; https://orcid.org/0000-0003-1293-7688; https://orcid.org/0000-0001-6797-9119; https://orcid.org/0000-0002-7587-6010; https://orcid.org/0000-0003-1324-9705; https://orcid.org/0000-0003-3885-9104Article NiO-CGO Composite for SOFC Anode: Synthesis and Characterization(Journal of Materials Science and Engineering, 2010) Cela, Beatriz; Macedo, Daniel Araújo de; Souza, Graziele Lopes de; Miranda, Auristela Carla de; Martinelli, Antonio Eduardo; Nascimento, Rubens Maribondo do; Paskocimas, Carlos AlbertoArticle Electrical conductivity and microstructure of NiO-CGO composites prepared by one-step synthesis(IOP Publishing, 2013-04-01) Nascimento, Rubens Maribondo do; Macedo, Daniel Araújo de; Figueiredo, Filipe Miguel Lebre; Patrício, Sónia Gonçalves; Martinelli, Antonio Eduardo; Paskocimas, Carlos Alberto; Marques, Fernando Manuel BicoThe correlation between the microstructure and electrical properties of NiO-Ce0.9Gd0.1O1.95 (NiO-CGO) composites prepared by a one-step synthesis method is reported in the present work, and compared to conventional samples synthesized by mechanically mixing commercial powders. Samples sintered between 1350 and 1450 °C had their microstructures and electrical properties investigated by scanning electron microscopy (SEM) and impedance spectroscopy. The total electrical conductivity in the range of 100 – 500 °C of one-step composites is more than one order of magnitude higher than for conventional material. This result is associated to the presence of a network of well-connected and homogeneously distributed NiO grains shown by SEM for the one-step composite, which is responsible for its improved percolative behavior and lower activation energy (0.24 eV at 250 – 650 °C).Article Tribological characterization of 3Y-TZP ceramics sintered at different conditions(Elsevier, 2018) Martinelli, Antonio Eduardo; Mendes, A. M.; Queiroz, J. R. C.; Santos, E. S.; Delmonte, Mauricio Roberto BomioArticle Electrical properties of lanthanum silicate apatite electrolytes prepared by an innovative chemical route(Electrochemical Society, 2014-09-29) Martinelli, Antonio Eduardo; Macedo, Graziele Lopes; Macedo, Daniel Araújo de; Rajesh, Surendran; Figueiredo, Filipe M. L.; Marques, Fernando M. B.; Nascimento, Rubens Maribondo doArticle Evaluation of the zinox and zeolite materials as adsorbents to remove H2S from natural gas(Elsevier, 2006-01-05) Melo, Dulce Maria de Araújo; Melo, Marcus Antônio de Freitas; Martinelli, Antonio Eduardo; Cachima, Gustavo Henrique Bezerra; Cunha, Jardel Dantas da; Souza, José Roberto deArticle Production of hydrogen from methane using pulsed plasma and simultaneous storage in titanium sheet(Elsevier, 2006-01) Silva, C. F. da; Ishikawa, Tomaz; Santos, Sydney Ferreira; Alves Júnior, Clodomiro; Martinelli, Antonio EduardoArticle Influence of polymerizing agent on structure and spectroscopic properties of nano‐crystalline La0.8Sr0.2MnO3 powders(Wiley-VCH Verlag, 2010-10-20) Macedo, Daniel Araújo de; Cesário, Moises Rômolos; Cela, Beatriz; Melo, Dulce Maria de Araújo; Paskocimas, Carlos Alberto; Martinelli, Antonio Eduardo; Nascimento, Rubens Maribondo doArticle A versatile route for the preparation of Ni–CGO cermets from nanocomposite powders(Elsevier, 2013-05) Macedo, Daniel Araújo de; Souza, Graziele L.; Cela, Beatriz; Paskocimas, Carlos Alberto; Martinelli, Antonio Eduardo; Figueiredo, Filipe Miguel Henriques Lebre Ramos; Marques, Fernando M. B.; Nascimento, Rubens Maribondo doArticle Ni–CGO cermet anodes from nanocomposite powders: Microstructural and electrochemical assessment(Elsevier, 2014-09) Macedo, Daniel Araújo de; Figueiredo, Filipe Miguel Henriques Lebre Ramos; Paskocimas, Carlos Alberto; Martinelli, Antonio Eduardo; Nascimento, Rubens Maribondo do; Marques, Fernando M.B.