Navegação Engenharias por Autor "Beltrami, Lílian Vanessa Rossa"
Resultados 1-13 de 13
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Anticorrosive performance of commercial nanoceramic coatings on AISI 1010 steel
Baldin, Estela Knopp Kerstner; Kunst, Sandra Raquel; Beltrami, Lílian Vanessa Rossa; Ortega Vega, Maria Rita; Scienza, Lisete Cristine; Malfatti, Célia de Fraga (2014) [Artigo de periódico]The aim of this work was to study the corrosion behavior of three commercial nanoceramic coatings in comparison to zinc phosphate coatings applied on mild steel (SAE 1010). The coatings were evaluated by scanning electron ... -
Characterization of siloxane-poly(methyl methacrylate) hybrid films obtained on a tinplate substrate modified by the addition of organic and inorganic acids
Kunst, Sandra Raquel; Beltrami, Lílian Vanessa Rossa; Cardoso, Henrique Ribeiro Piaggio; Santana, Joseane de Andrade; Sarmento, Victor Hugo Vitorino; Muller, Iduvirges Lourdes; Malfatti, Célia de Fraga (2016) [Artigo de periódico]Tinplate is used to food packaging and other types of packages. The corrosion resistance of the tinplate has been study due the necessity of an alternative to high environmental impact of chromatization process. Therefore ... -
Corrosion mechanism suggested based on electrochemical analysis and SVET for uncoated tinplate and post coated with a hybrid film
Kunst, Sandra Raquel; Beltrami, Lílian Vanessa Rossa; Boniatti, Rosiana; Quevedo Reyes, Marcela Citlalim; Bastos, António Alexandre Cunha; Oliveira, Cláudia Trindade; Ferreira, Mário Guerreiro Silva; Menezes, Tiago Lemos; Malfatti, Célia de Fraga (2017) [Artigo de periódico]The tinplate, used in the packaging sector and formed from a metal substrate, comprises a steel base which has undergone a surface treatment to produce a thin layer of FeSn2, a tin layer and an oxide tin layer. Currently, ... -
Effect of concentrations of plasticizers on the sol-gel properties developed from alkoxides precursors
Kunst, Sandra Raquel; Longhi, Marielen; Beltrami, Lílian Vanessa Rossa; Zini, Lucas Pandolphi; Boniatti, Rosiana; Cardoso, Henrique Ribeiro Piaggio; Ortega Vega, Maria Rita; Malfatti, Célia de Fraga (2017) [Artigo de periódico]Coatings developed through sol-gel method is presented as an interesting replacement to chromium coating. Sol-gel method present advantages as high purity and excellent distribution of the components. The objective of this ... -
Effect of curing temperature and architectural (monolayer and bilayer) of hybrid films modified with polyethylene glycol for the corrosion protection on tinplate
Kunst, Sandra Raquel; Beltrami, Lílian Vanessa Rossa; Brandolt, Cristiane de Souza; Cardoso, Henrique Ribeiro Piaggio; Ortega Vega, Maria Rita; Baldin, Estela Knopp Kerstner; Menezes, Tiago Lemos; Malfatti, Célia de Fraga (2014) [Artigo de periódico]Hybrid films obtained by a sol-gel process are based on two important reactions: hydrolysis and condensation. The condensation reaction is influenced by the curing temperature, since it induces the development of the ... -
Effect of tetraethoxy-silane (TEOS) amounts on the corrosion prevention properties of siloxane-PMMA hybrid coatings on galvanized steel substrates
Longhi, Marielen; Kunst, Sandra Raquel; Beltrami, Lílian Vanessa Rossa; Baldin, Estela Knopp Kerstner; Silva Filho, Cícero Inácio da; Sarmento, Victor Hugo Vitorino; Malfatti, Célia de Fraga (2015) [Artigo de periódico]Siloxane-poly(methyl methacrylate) (PMMA) organic-inorganic hybrid coatings were deposited on galvanized steel by the dip-coating sol-gel technique. Anticorrosion properties, as well as the morphological, surface and ... -
Effect of the shot peening process on the corrosion and oxidation resistance of AISI430 stainless steel
Peltz, Jefferson da Silva; Beltrami, Lílian Vanessa Rossa; Kunst, Sandra Raquel; Brandolt, Cristiane de Souza; Malfatti, Célia de Fraga (2015) [Artigo de periódico]Ferritic stainless steels are used in specific applications where corrosion resistance, oxidation resistance and a high mechanical resistance are required. Shot peening is a process applied to add residual compression ... -
Electrochemical and mechanical behavior of aluminum aa2024-t3 coated with hybrid matrix containing graphene oxide
Cardoso, Henrique Ribeiro Piaggio; Beltrami, Lílian Vanessa Rossa; Marcolin, Patrícia; Scopel, Tatiane Longhi; Kunst, Sandra Raquel; Lemos, Lucas Madalosso de; Maraschin, Thuany; Basso, Nara Regina de Souza; Malfatti, Célia de Fraga (2019) [Artigo de periódico]The aeronautics industry uses aluminum alloy AA2024-T3 due to its low density and good mechanical properties. However, this alloy requires the use of protective coatings because it does not have the corrosion and wear ... -
Electrochemical and mechanical behavior of UV curing paint on hybrid films modified with polyethyleneglycol plasticizer applied on tinplate
Marcolin, Patrícia; Beltrami, Lílian Vanessa Rossa; Boniatti, Rosiana; Salvador, Débora Guerra; Quevedo Reyes, Marcela Citlalim; Bastos, António Alexandre Cunha; Ferreira, Mário Guerreiro Silva; Malfatti, Célia de Fraga; Kunst, Sandra Raquel (2017) [Artigo de periódico]The objective of this work is to coat tinplate with a hybrid film obtained from a sol-gel process constituted by the alkoxide precursor tetraethoxysilane (TEOS) and 3-trimethoxysilylpropyl methacrylate (TMSM), with the ... -
A model for the formation of niobium structures by anodization
Bianchin, Ana Carolina Viero; Maldaner, Guilherme Reis; Führ, Luciane Tais; Beltrami, Lílian Vanessa Rossa; Malfatti, Célia de Fraga; Rieder, Ester Schmidt; Kunst, Sandra Raquel; Oliveira, Cláudia Trindade (2017) [Artigo de periódico]The fluoride use for anodizing electrolytes has been primarily responsible for the formation of nanoporous oxides at valve metals, except aluminum, since it causes a dissolution process. This study presents the formation ... -
New sol-gel formulations to increase the barrier effect of a protective coating against the corrosion and wear of galvanized steel
Kunst, Sandra Raquel; Cardoso, Henrique Ribeiro Piaggio; Beltrami, Lílian Vanessa Rossa; Oliveira, Cláudia Trindade; Menezes, Tiago Lemos; Ferreira, Jane Zoppas; Malfatti, Célia de Fraga (2015) [Artigo de periódico]This study proposes a new pretreatment method that uses alkoxide precursors with a plasticizing agent; the purpose of this study is to improve the electrochemical and mechanical properties of a galvanized steel surface. ... -
Oxide formation on NiTi surface : influence of the heat treatment time to achieve the shape memory
Hansen, Alana Witt; Beltrami, Lílian Vanessa Rossa; Antonini, Leonardo Marasca; Villarinho, Denis Jardim; Neves, Júlio César Klein das; Marino, Cláudia Eliana Bruno; Malfatti, Célia de Fraga (2015) [Artigo de periódico]Several studies regarding superficial treatments of Nitinol (NiTi) shape-memory have been developed aiming to the improve corrosion resistance and to block the Ni release to adjacent tissues. The necessary heat treatment ... -
The influence of the glycerin concentration on the porous structure of ferritic stainless steel obtained by anodization
Bervian, Alexander; Ludwig, Gustavo Alberto; Kunst, Sandra Raquel; Beltrami, Lílian Vanessa Rossa; Moura, Angela Beatrice Dewes; Malfatti, Célia de Fraga; Oliveira, Cláudia Trindade (2015) [Artigo de periódico]Anodizing of ferritic stainless steel has been used for decoration purposes to obtain a barrier effect. The most commonly used electrolyte for this process is INCO (5M H2SO4 + 2,5M CrO3). INCO electrolyte with glycerin ...