Navegação Ciências Exatas e da Terra por Autor "Malfatti, Célia de Fraga"
Resultados 1-7 de 7
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Application of Taguchi method to study morphological evolution of TiO2 nanotubes obtained via anodization process
Bervian, Alexander; Coser, Eliane; Pianaro, Sidnei Antonio; Aguzzoli, Cesar; Pedott, Alexandre Homsi; Khan, Sherdil; Malfatti, Célia de Fraga (2018) [Artigo de periódico]The growth of titanium dioxide nanotubes (TiO2) via anodization process depends on the controlling parameters such as applied potential, anodization time, and electrolyte composition. In the present work, the Taguchi method ... -
Clean synthesis of biocarbon-supported Ni@Pd core–shell particles via hydrothermal method for direct ethanol fuel cell anode application
Silva, Elen Almeida Leal da; Cuña Suárez, Andrés; Reyes Plascencia, Carmina; Radtke, Claudio; Tancredi, Néstor; Malfatti, Célia de Fraga (2020) [Artigo de periódico]Direct ethanol fuel cells (DEFCs) are devices for clean and sustainable energy production, where the generation of electrical energy occurs as a result of the anodic ethanol oxidation reaction (EOR). One of the main ... -
Corrosion and wear resistance of carbon films obtained by electrodeposition on ferritic stainless steel
Cardoso, Henrique Ribeiro Piaggio; Falcade, Tiago; Kunst, Sandra Raquel; Malfatti, Célia de Fraga (2015) [Artigo de periódico]In improving the corrosion and hardness proprieties of ferritic stainless steel, the use of protective coatings becomes an interesting alternative. In this study, a carbon layer was deposited on AISI 430 by electrodeposition ... -
Evolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performance
Bervian, Alexander; Coser, Eliane; Khan, Sherdil; Pianaro, Sidnei Antonio; Aguzzoli, Cesar; Marcuzzo, Jossano Saldanha; Baldan, Mauricio Ribeiro; Malfatti, Célia de Fraga (2017) [Artigo de periódico]The evolution of TiO2 nanotubular morphology, synthesized in a mixture of fluorinated ethylene glycol and glycerol electrolyte, was studied as a function of the anodization time. The samples were characterized by FEG-SEM, ... -
Photoactivity of nanostructured porous Nb2O5 : effect of Pt, Ta, Cu, and Ti impregnation
Antonini, Leonardo Marasca; Adamski, Janice; Bernardi, Fabiano; Aguzzoli, Cesar; Hubler, Roberto; Malfatti, Célia de Fraga (2022) [Artigo de periódico]In the present work, we report the obtaining of nanostructured porous Nb2O5 by anodizing process, with Pt, Ta, Cu, or Ti impregnation, and by magnetron sputtering process. The techniques of scanning electron microscopy, ... -
TEOS thin films obtained by plasma polymerization on Ti6Al4V alloys : influence of the deposition pressure on surface properties and cellular response
Pereira, Mireli Pandolfo; Baldin, Estela Knopp Kerstner; Antonini, Leonardo Marasca; Bernardi, Fabiano; Oliveira, Luiza Silva de; Maurmann, Natasha; Pranke, Patricia Helena Lucas; Pereira, Marcelo Barbalho; Malfatti, Célia de Fraga (2021) [Artigo de periódico]The modification of surfaces by the application of thin films has been used in the regenerative medicine area to increase the biocompatibility of metal implants. Titanium alloy has been recently used as substrate in poly ... -
Wear resistance of plasma electrolytic oxidation coatings on Ti-6Al-4V ELI alloy processed by additive manufacturing
Santos, Pedro Bell; Castro, Victor Velho de; Baldin, Estela Knopp Kerstner; Aguzzoli, Cesar; Longhitano, Guilherme Arthur; Munhoz, André Luiz Jardini; Lopes, Éder Sócrates Najar; Andrade, Antonio Marcos Helgueira de; Malfatti, Célia de Fraga (2022) [Artigo de periódico]The additive manufacturing (AM) technique can produce Ti-6Al-4V ELI (extra low interstitial) alloy for personalized biomedical devices. However, the Ti-6Al-4V ELI alloy presents poor tribological behavior. Regarding this, ...