Navegação Engenharias por Autor "Ferreira, Jane Zoppas"
Resultados 1-20 de 20
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Comparative study between EDXRF and ASTM E572 methods using two-way ANOVA
Krummenauer, Alex; Veit, Hugo Marcelo; Ferreira, Jane Zoppas (2018) [Artigo de periódico]Comparison with reference method is one of the necessary requirements for the validation of non-standard methods. This comparison was made using the experiment planning technique with two-way ANOVA. In ANOVA, the results ... -
Computational image analysis as an alternative tool for the evaluation of corrosion in salt spray test
Moreira, Vitor Bonamigo; Krummenauer, Alex; Ferreira, Jane Zoppas; Veit, Hugo Marcelo; Armelin, Elaine; Meneguzzi, Alvaro (2020) [Artigo de periódico]The current standards for evaluating corrosion during salt spray tests rely on the visual analysis of the specimens, and this may be a limitation when higher resolution quantitative outputs are desired. In this work, ... -
Corrosion behavior of a conversion coating based on zirconium and colorants on galvanized steel by electrodeposition
Costa, Josiane Soares; Dei Agnoli, Raquel; Ferreira, Jane Zoppas (2015) [Artigo de periódico]Corrosion performance of Zr-based coating on substrates obtained by zinc electrodeposition in an alkaline bath is compared to chromate coatings (Cr III and Cr VI). The “nano Zr” is a conversion coating formed by immersion ... -
Deposição eletroassistida de ortossilicato de tetraetila (TEOS) como pré-tratamento para a pintura de alumínio AA1100
Moreira, Vitor Bonamigo; Cardoso, Henrique Ribeiro Piaggio; Ferreira, Jane Zoppas; Meneguzzi, Alvaro (2018) [Artigo de periódico]A técnica convencional de produção de filmes de organossilanos por imersão pode promover a formação de pré-tratamentos pouco homogêneos, prejudicando a sua proteção por barreira contra a corrosão e a aderência de tintas. ... -
Dynamic behaviour of an electrolyser with a two phase solid-liquid electrolyte : Part I : spectral analysis of potential fluctuations
Gabrielli, C.; Huet, F.; Wiart, J.; Ferreira, Jane Zoppas (1994) [Artigo de periódico]The dynamic behaviour of a simplified electrolyser with a two phase solid-liquid electrolyte was investigated. The current-voltage curve and the impedance of the working electrode (current collector) was measured. In ... -
Electrochemical behavior during the zirconium conversion coating formation on AISI 1006 steel
Moraes, Juliana dos Anjos; Giacobbo, Alexandre; Sanchez-Tovar, Rita; Leiva-García, Rafael; García Antón, Jose; Ferreira, Jane Zoppas (2019) [Artigo de periódico]This study investigated a conversion coating based on hexafluorozirconic acid solution on cold-rolled (AISI 1006) steel sheets, in situ, at different pH values and immersion times. Electrochemical characterization was ... -
Electrooxidation using Nb/BDD as post-treatment of a reverse osmosis concentrate in the petrochemical industry
Silva, Salatiel Wohlmuth da; Venzke, Carla Denize; Welter, Júlia Bitencourt; Schneider, Daniela Eduarda; Ferreira, Jane Zoppas; Rodrigues, Marco Antônio Siqueira; Bernardes, Andrea Moura (2019) [Artigo de periódico]This work evaluated the performance of an electrochemical oxidation process (EOP), using boron-doped diamond on niobium substrate (Nb/BDD), for the treatment of a reverse osmosis concentrate (ROC) produced from a petrochemical ... -
Evaluation of the electrodialysis process for the treatment of metal finishing wastewater
Dalla Costa, Roni Fábio; Klein, Claudia Willrich; Bernardes, Andrea Moura; Ferreira, Jane Zoppas (2002) [Artigo de periódico]Neste trabalho estudou-se o tratamento, por eletrodiálise, de um efluente alcalino, oriundo de um processo de galvanoplastia, contendo íons de Zn, Ni, Cu, Fe e Al, bem como de Na e CN-. O estudo foi feito tanto em células ... -
Filme autosuportado de polianilina desdopada para aplicações anticorrosivas
Silva, Rodrigo Sanchotene; Cardozo, Herbert Martins; Ferreira, Jane Zoppas; Meneguzzi, Alvaro (2012) [Artigo de periódico]Os polímeros intrinsecamente condutores (PIC), como a polianilina (PAni), têm sido estudados com alternativa em filmes protetores de metais oxidáveis contra a corrosão. Dada a dificuldade de fusão ou dissolução da PAni ... -
Influence of concentration and pH of hexafluorozirconic acid on corrosion resistance of anodized AA7075-T6
Pinheiro, Jéssica Salles; Regio, Gabriel; Cardoso, Henrique Ribeiro Piaggio; Oliveira, Cláudia Trindade; Ferreira, Jane Zoppas (2019) [Artigo de periódico]7XXX aluminum alloys show high mechanical resistance and low weight, both required properties for aircraft industry. Anodizing is an electrolytical process typically used to improve the corrosion resistance of aluminum ... -
Mitigating the susceptibility to intergranular corrosion of alloy 625 by friction‑stir welding
Lemos, Guilherme Vieira Braga; Farina, Alexandre Bellegard; Cardoso, Henrique Ribeiro Piaggio; Bergmann, Luciano Andrei; Ferreira, Jane Zoppas; Santos, Jorge Fernandez dos; Voort, George Vander; Reguly, Afonso (2022) [Artigo de periódico]In this work, friction-stir welding (FSW) was employed to alloy 625 grade I (soft annealed) sheets. Therefore, solid-state based welding was undertaken with a tool rotational speed of 200 rpm and a welding speed of 1 mm/s. ... -
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. ... -
Obtainment and characterization of a silicon alkoxides-based coating applied to a substrate of stainless steel 316L for use in biomaterials
Longhi, Marielen; Boniatti, Rosiana; Kunst, Sandra Raquel; Santos, Venina dos; Ferreira, Jane Zoppas (2019) [Artigo de periódico]The silicon alkoxides-based coating is an alternative to control the release of cytotoxic ions through metal implants. This study evaluated the influence of the number of layers of a hybrid coating on the surface of ... -
Pré-tratamento por deposição eletroassistida de viniltrietoxissilano (VTES) para a pintura de alumínio
Moreira, Vitor Bonamigo; Ferreira, Jane Zoppas; Meneguzzi, Alvaro (2018) [Artigo de periódico]A técnica de deposição eletroassistida pode conduzir à formação de filmes de organossilanos mais contínuos pelo método de sol-gel. A técnica baseia-se na promoção da eletrólise da água para aumentar o pH na região catódica, ... -
Removal of cadmium and cyanide from aqueous solutions through electrodialysis
Marder, Luciano; Sulzbach, Guilherme Oto; Bernardes, Andrea Moura; Ferreira, Jane Zoppas (2003) [Artigo de periódico]A descarga de efluentes contendo metais pesados e cianeto pelas indústrias de galvanoplastia é uma das maiores fontes de poluição dos recursos hídricos. O emprego da técnica de eletrodiálise para o tratamento de um efluente ... -
The influence of surface condition on the electrochemical properties of ASTM F138 steel for biomedical applications
Marques, Fernando Michelon; Rocha, Alexandre da Silva; Santos, Giovanni Rocha dos; Wolfart Junior, Mario; Costa, Rodrigo Cardoso; Ferreira, Jane Zoppas (2021) [Artigo de periódico]The aim of this paper was to determine the influence of machining parameters on the surface layer, and consequently on the electrochemical properties, of ASTM F138 austenitic stainless steels. Eight different surface ... -
Toxicity effects of nickel electroplating effluents treated by photoelectrooxidation in the industries of the Sinos River Basin
Benvenuti, Tatiane; Rodrigues, Marco Antonio Siqueira; Arenzon, Alexandre; Bernardes, Andrea Moura; Ferreira, Jane Zoppas (2015) [Artigo de periódico]The Sinos river Basin is an industrial region with many tanneries and electroplating plants in southern Brazil. The wastewater generated by electroplating contains high loads of salts and metals that have to be treated ... -
Tratamento de efluentes de eletrodeposição de níquel por fotoeletrooxidação
Benvenuti, Tatiane; Rodrigues, Marco Antonio Siqueira; Ziulkoski, Ana Luiza; Bernardes, Andrea Moura; Ferreira, Jane Zoppas (2012) [Artigo de periódico]Considerando-se a preocupação crescente com a toxicidade dos efluentes, pela pre- sença de metais e a ocorrência de novos poluentes orgânicos, esse estudo aplicou o Pro- cesso Oxidativo Avançado (POA) de fotoeletrooxidação ... -
Tratamento térmico em Zamac visando diminuir defeitos de porosidade
Dienstmann, Fernando Konarzewski; Führ, Luciane Tais; Scheffel, Leonardo Felix; Carone, Carlos Leonardo Pandolfo; Morisso, Fernando Dal Pont; Schneider, Eduardo Luís; Kunst, Sandra Raquel; Ferreira, Jane Zoppas; Oliveira, Cláudia Trindade (2021) [Artigo de periódico]O Zamac tem sido utilizado na indústria galvânica, principalmente, devido ao seu baixo ponto de fusão, o que permite a obtenção de peças com riqueza de detalhes, tais como peças do setor moveleiro, moda e metais sanitários. ... -
Wear behaviour of electroless heat treated Ni-P coatings as alternative to electroplated hard chromium deposits
Goettems, Felipe Samuel; Ferreira, Jane Zoppas (2017) [Artigo de periódico]In this present study was evaluated the influence of heat treatment on the wear resistance of electroless high phosphorus nickel coating (9-10% P wt.). In addition, both untreated and treated Ni-P deposits were then compared ...