Navegação IPEN por Autores IPEN "COUTO, CAMILA P."

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  • IPEN-DOC 26953

    GOMES, MAURILIO P. ; SANTOS, IGOR P. dos ; REIS, LUIS A.M. dos ; COUTO, CAMILA P. ; MUCSI, CRISTIANO S. ; COLOSIO, MARCO A.; ROSSI, JESUALDO L. . Characterization of sintered valve seat inserts obtained with AISI M2 high-speed steel after air quenching / Caracterização de insertos para assentos de válvulas sinterizados obtidos com o aço rápido AISI M2 depois de temperados ao ar. In: ABM WEEK; CONGRESSO ANUAL DA ABM, 72.; ENCONTRO NACIONAL DE ESTUDANTES DE ENGENHARIA METALURGICA, DE MATERIAIS E DE MINAS, 17., 02-06 de outubro, 2017, São Paulo, SP. Anais... São Paulo, SP: Associação Brasileira de Metalurgia, Materiais e Mineração, 2017. p. 993-1000.

    Abstract: The aim of this work was to heat treat and characterize sintered valve seat inserts (VSI). The powder metallurgy route was the only way found to substitute cobalt and lead, used in the VSI original alloy, due to their high cost and toxicological effect, respectively. The studied VSI was obtained with AISI M2 high-speed steel powder mixed with iron powder and other additives such as manganese sulphide, graphite, zinc stearate, carbides and copper, which was added by metallic infiltration. All the VSI were air quenched and double tempered, for one hour each, at seven different equidistantly temperatures, ranging from 100 °C up to 700 °C. The physical and mechanical properties were evaluated by means of the VSI apparent density, apparent hardness and crush radial strength. The chemical composition was determined through gas analysis, for the light elements such as carbon and sulfur, and energy dispersive X-ray fluorescence spectrometry for other elements. Microstructural characterization was performed with the support of scanning electron microscopy and energy dispersive spectroscopy. Regarding the VSI final application, the best results were achieved with the inserts air quenched and double tempered at 600 °C.

    Palavras-Chave: heat treatments; powder metallurgy; steels; valves; air; quenching

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  • IPEN-DOC 26902

    COUTO, CAMILA P. ; COSTA, ISOLDA ; PANOSSIAN, ZEHBOUR; COLOSIO, MARCO A.; CAMPOS, LUIZ G.F.P. de; ROSSI, JESUALDO L. . Corrosion resistance and adhesion evaluation of press hardened steel 22MnB5 coated with AlSi and ZnNi in cyclic corrosion testing. In: CONGRESSO BRASILEIRO DE CORROSÃO, 38.; INTERNATIONAL CORROSION MEETING, 7th; CONBRASCORR PARA INSPETORES DE PINTURA, 2.; CONCURSO DE FOTOGRAFIA DE CORROSÃO E DEGRADAÇÃO DE MATERIAIS, 21.; EXPOSIÇÃO DE TECNOLOGIAS PARA PREVENÇÃO E CONTROLE DA CORROSÃO, 37., 14-18 de maio, 2018, São Paulo, SP. Proceedings... Rio de Janeiro, RJ: Associação Brasileira de Corrosão, 2018. p. 1-6.

    Abstract: AlSi coating has been the most applied on press hardening steels - PHS. However, alternative coatings such as Zn-based alloys are under investigation. This paper has the objective of evaluating the corrosion resistance of the 22MnB5 steel, coated either with hot-dip AlSi or electroplated ZnNi, by means of cyclic corrosion test. Automotive parts of ZnNi coated PHS steel were tested in two different conditions: after hot stamping, and after hot stamping plus sandblasting. Other parts coated with AlSi were evaluated just in the after hot stamping condition. The cyclic corrosion test results showed that all metallic coated samples had excellent corrosion performance. However, the ZnNi coated in the as hot stamped condition, presented the best corrosion performance during testing. Surface coating cracks were found in all parts. Moreover, the adhesion was evaluated after 28 and 68 cycles in creepback area and the results showed that there was no loss of adhesion after the cyclic corrosion tests. The corrosion resistance results pointed that the electroplated ZnNi is a potential alternative to AlSi coating.

    Palavras-Chave: corrosion resistance; adhesion; aluminium alloys; silicon alloys; steels

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  • IPEN-DOC 27780

    COUTO, CAMILA P. ; ANDREATTA, FRANCESCO; LANZUTTI, ALEX; COSTA, ISOLDA ; PANOSSIAN, ZEHBOUR; DE GRAEVE, IRIS; TERRYN, HERMAN; ROSSI, JESUALDO L. ; REVILLA, REYNIER I.. Depth profiling approach to evaluate the influence of hot stamping on the local electrochemical behaviour and galvanic series of hot-dip Al-Si coating on 22MnB5 steel. Corrosion Science, v. 185, p. 1-12, 2021. DOI: 10.1016/j.corsci.2021.109435

    Abstract: The influence of hot-stamping process on the corrosion properties of Al-Si coating on 22MnB5 steel was locally evaluated using a depth profiling approach combining GDOES and electrochemical micro cell. The results highlight the complexity of the system and the high dependence of the local galvanic series on the hot-stamping process. Due to iron diffusion from the steel substrate into the coating, the Al-rich layers presented active behaviour, whereas the initial coating condition showed a passive behaviour. Conversely, Fe/Si-rich sublayers acted as protective barrier for the steel substrate, as they show passive behaviour with nobler corrosion potentials and lower current densities.

    Palavras-Chave: corrosion; coatings; aluminium compounds; aluminium silicides; steels; hardening

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  • IPEN-DOC 27133

    COUTO, CAMILA P. ; REVILLA, REYNIER I.; COLOSIO, MARCO A.; COSTA, ISOLDA ; PANOSSIAN, ZEHBOUR; DE GRAEVE, IRIS; TERRYN, HERMAN; ROSSI, JESUALDO L. . Electrochemical behaviour of 22MnB5 steel coated with hot-dip Al-Si before and after hot-stamping process investigated by means of scanning Kelvin probe microscopy. Corrosion Science, v. 174, p. 1-10, 2020. DOI: 10.1016/j.corsci.2020.108811

    Abstract: Press-hardened steels are commonly protected with hot-dip Al-Si coating. Due to the electrochemical complexity of this system, either before or after hot-stamping process, SKPFM was used to investigate the influence of the thermo-mechanical process on the electrochemical behaviour of the galvanic coupling. The hot-stamping process changed significantly the anodic/cathodic coupling of the coating/steel due to iron enrichment in the coating layer. Hence, a concurrent mechanism was thoroughly established, i.e., while the press hardening enhances the corrosion properties of the steel system (steel and metallic coating) through diffusion, at the same time it diminishes the cathodic protection of the Al-Si layer.

    Palavras-Chave: steels; hardness; coupling; electrochemical corrosion; surface coating; coatings; electron scanning; scanning electron microscopy; electrochemical coating

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  • IPEN-DOC 25096

    GOMES, MAURILIO P. ; SANTOS, IGOR P. dos ; COUTO, CAMILA P. ; BETINI, EVANDRO G. ; REIS, LUIS A.M. dos ; MUCSI, CRISTIANO S. ; COLOSIO, MARCO A.; ROSSI, JESUALDO L. . Heat treatment of sintered valve seat inserts. Materials Research, v. 21, n. 5, 2018. DOI: 10.1590/1980-5373-MR-2018-0068

    Abstract: The characterization of sintered valve seat inserts (VSIs) after being subjected to different heat treatment operations has been carried out. The VSIs were obtained from three different alloys by mixing iron powder with AISI M3:2, AISI M2 high-speed steels, and AISI D2 tool steel. After sintering, the VSI were quenched in air followed by double tempering at seven different temperatures. The cooling rate during air quenching was measured by means of a thermocouple type k attached to a data acquisition system. The characterization of the mechanical and physical properties of the VSIs was achieved by measuring relative density, apparent hardness and crush radial strength. The resulting microstructures for the sintered parts were interpreted using the isothermal and continuous cooling transformation diagrams for similar alloys. The VSI obtained with AISI M3:2 and AISI M2 high-speed steels after air quenching and double tempering at 600 ºC showed the best results in terms of apparent hardness and crush radial strength.

    Palavras-Chave: powder metallurgy; sintering; heat treatments; valves; steels

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  • IPEN-DOC 28340

    COUTO, CAMILA P. ; REVILLA, REYNIER I.; POLITANO, RODOLFO ; COSTA, ISOLDA ; PANOSSIAN, ZEHBOUR; GRAEVE, IRES de; ROSSI, JESUALDO L. ; TERRYN, HERMAN. Influence of austenitisation temperatures during hot stamping on the local electrochemical behaviour of 22MnB5 steel coated with hot-dip Al-Si. Corrosion Science, v. 190, p. 1-12, 2021. DOI: 10.1016/j.corsci.2021.109673

    Abstract: Scanning Kelvin probe force microscopy was used to evaluate the effect of austenitisation temperatures during hot stamping on the local electrochemical behaviour of 22MnB5 steel coated with hot-dip Al-Si. A variation in the austenitisation temperature around 50 °C substantially altered the coating morphology as well as the local electrochemical behaviour of the system (coating/steel). Both coating layer and steel substrate became nobler as the austenitisation temperature increased. The former was due to the overall iron enrichment while the latter was related to the microstructural transformation during quenching. Therefore, the driving force for cathodic protection decreased as the austenitisation temperature increased.

    Palavras-Chave: atomic force microscopy; probes; austenite; electrochemistry; temperature dependence

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  • IPEN-DOC 26985

    COUTO, CAMILA P. ; COSTA, ISOLDA ; COLOSIO, MARCO; GOMES, MAURILIO ; ROSSI, JESUALDO ; BOLSANELLO, MARILIA . Influence of heat treatment on corrosion resistance of press hardened steel coated with AlSi and ZnNi. In: EUROPEAN CORROSION CONGRESS; INTERNATIONAL CORROSION CONGRESS, 20th; PROCESS SAFETY CONGRESS, September 3-7, 2017, Prague, Czech Republic. Abstract... Frankfurt, Germany: European Federation of Corrosion, 2017.

    Abstract: The ultrahigh strength boron manganese steels, also known as PHS (press hardened steels), are strategic materials for the automotive industry, satisfying safety needs and fuel reduction requirements by means of the lightweight design concept, a current trend for new vehicles. It is possible by the hot stamping process which consists in heating a steel blank to the austenitization temperature, transferring it to press tooling, forming and quenching to fully martensitic transformation. At the end of process, the steel achieves tensile strength up to 1,500 MPa. The transference step from furnace to press is a critical stage because it might promote deleterious steel oxidation. The use of metallic coatings avoids this outcome. AlSi coatings have been the most applied on PHS. Alternative coatings such as electroplated ZnNi are under investigation to evaluate their potential for replacement of AlSi coatings, besides to keep up with the high projected world demand. Zinc based coatings are advantageous comparatively to AlSi ones because they provide cathodic protection to steel substrates. In this study the influence of hot stamping heat treatment on corrosion resistance of 25MnB5 steel coated by AlSi and electroplated ZnNi has been investigated. The tests include open circuit potential measurement, electrochemical impedance spectroscopy and anodic polarization curves. The samples have been tested as received and after the heat treatment which consists in heating the sample at 900°C by 10 minutes and then, fast cooling in water. It is expect that the heat treatment changes the corrosion resistance due to the intermetallics formation at the coating layer as a consequence of diffusion.

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  • IPEN-DOC 28898

    COUTO, CAMILA P. ; BAERT, KITTY; COSTA, ISOLDA ; PANOSSIAN, ZEHBOUR; DE GRAEVE, IRIS; REVILLA, REYNIER I.; TERRYN, HERMAN; ROSSI, JESUALDO L. . Influence of hot-stamping process on the corrosion initiation and properties of corrosion products at the surface of 22MnB5 steel metallic coated with hot-dip Al-Si. In: INTERNATIONAL CORROSION CONGRESS, 21st; INTERNATIONAL CORROSION MEETING, 8th, July 20-23, 2021, Online. Anais... Rio de Janeiro, RJ: Associação Brasileira de Corrosão - ABRACO, 2021.

    Abstract: 22MnB5 is an ultra-high strength steel combined with hot-stamping process, also known as press hardened steel (PHS). It is a strategic material for the automotive industry because it allows safety improvement, lightweight design and consequently reduction of fuel consumption. In order to prevent surface scale and steel decarburisation during the hot-stamping process, the material is often protected with metallic coatings. Hot-dip Al-Si (Si 10 % in mass fraction) is the most used system for hot-stamping application. This study has the objective to characterize the corrosion initiation and the properties of the corrosion products at the surface of samples before and after hot-stamping process. The samples were submitted to several cycles of accelerated corrosion tests in a salt spray chamber. A systematic characterization of the corroded surface was done by means of Raman spectroscopy and scanning electron microscopy combined with energy dispersive X-ray spectroscopy (SEM - EDS). The samples were also immersed in a Cl– containing solution, after which the morphology of the corrosion attacks and the corrosion initiation process were studied. The thermo-mechanical process changes the corrosion mechanism as well as the nature of the corrosion products.

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  • IPEN-DOC 26825

    COUTO, CAMILA P. ; REVILLA, REYNIER; COSTA, ISOLDA ; PANOSSIAN, ZEHBOUR; ROSSI, JESUALDO ; TERRYN, HERMAN; DE GRAEVE, IRIS. Investigation of electrochemical behaviour of 22MnB5 steel coated with hot-dip Al-Si before and after hot stamping process by means of SKPFM measurements. In: EUROPEAN CORROSION CONGRESS, September 9-13, 2019, Seville, Spain. Abstract... 2019.

    Abstract: The demand for hot stamped components has been growing in structural vehicle applications, due to the advantages of combining lightweight design and safety improvement. Boron-manganese 22MnB5 steel is the most common grade for hot stamping applications. After the thermomechanical process, the steel exhibits up to 1,500 MPa of tensile strength with the absence of the springback effect. The hot stamping process involves heating the steel blank to the austenitization temperature and then transferring it from the furnace to the press tool, where the material is formed and quenched simultaneously. Due to high temperatures during the process, the steel blank is protected with a metallic coating to avoid the steel decarburization and oxidation. Hot-dip Al-Si is the most applied coating system on boron-manganese steel for hot stamping applications. It is known that, during hot stamping, diffusion takes place changing the coating layer morphology. The objective of this study is to investigate the effect of the hot stamping process on the electrochemical behaviour of 22MnB5 steel coated with hot-dip Al-Si by means of the SKPFM technique. Moreover, the samples were characterized by means of FE-SEM/EDS. The SKPFM results showed that, before the hot stamping process, there is a high difference of potential between the coating layer and the steel substrate. After hot stamping, this difference decreases. In both conditions (before and after hot stamping), the coating layer is less noble than the steel substrate. It was also observed that the steel substrate potential also decreased after the hot stamping process. This could be a consequence of iron diffusion towards the coating layer and the recrystallization of the substrate after the thermo-mechanical process.

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  • IPEN-DOC 25026

    GOMES, MAURILIO P. ; SANTOS, IGOR P. dos ; COUTO, CAMILA P. ; MUCSI, CRISTIANO S. ; COLOSIO, MARCO A.; ROSSI, JESUALDO L. . Têmpera ao ar de insertos de assentos de válvulas obtidos com aço ferramenta AISI D2. In: CONFERENCIA BRASILEIRA SOBRE TEMAS DE TRATAMENTO TERMICO, 8., 21-24 de maio, 2017, Indaiatuba, SP. Anais... 2017.

    Abstract: A obtenção de insertos de assentos de válvulas por metalurgia de pó usando uma mistura de pó de ferro e aços rápidos ou aços ferramenta está atendendo os requisitos para a substituição do cobalto e chumbo em peças comerciais, visando a redução de custo e evitando a toxicidade do chumbo. O objetivo do presente trabalho foi o de tratar termicamente e caracterizar os insertos de assentos de válvulas sinterizados obtidos utilizando-se uma mistura de pós. Essa mistura de pós foi constituída pelo aço ferramenta AISI D2, ferro, sulfato de manganês, carboneto de nióbio, grafite, estearato de zinco e cobre. O ciclo de temperatura da têmpera ao ar foi determinado por meio do termopar tipo k acoplado a um sistema de aquisição de dados. As propriedades físicas e mecânicas foram medidas em relação à dureza aparente dos insertos, densidade aparente e a sua resistência à ruptura radial. A caracterização microestrutural foi realizada utilizando-se a microscopia óptica, microscopia eletrônica de varredura e espectroscopia por dispersão de energia. Os insertos temperados ao ar e duplamente revenido a 500 °C mostraram os melhores resultados no que tange a dureza e resistência à ruptura radial.

    Palavras-Chave: sintered materials; valves; machining; powder metallurgy; heat treatments

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  • IPEN-DOC 24417

    GOMES, MAURILIO P. ; SANTOS, IGOR P. dos ; COUTO, CAMILA P. ; MUCSI, CRISTIANO S. ; ROSSI, JESUALDO L. ; COLOSIO, MARCO A.. Têmpera ao ar de insertos de assentos de válvulas obtidos com o aço ferramenta AISI D2. Industrial Heating Brasil, p. 48-52, 2017.

    Palavras-Chave: sintered materials; valves; machining; powder metallurgy; heat treatments

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  • IPEN-DOC 28053

    COUTO, CAMILA P. . The effect of hot-stamping process on the local electrochemical behaviour of the 22 MnB5 steel coated with hot-dip aluminium-silicon / O efeito do processo de estampagem a quente no comportamento eletroquímico local do aço 22MnB5 revestido com alumínio-silício por imersão a quente . 2021. Tese (Doutorado em Tecnologia Nuclear) - Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP, São Paulo. 170 p. Orientador: Jesualdo Luiz Rossi. DOI: 10.11606/T.85.2021.tde-08092021-103853

    Abstract: Press-hardened steel (PHS) is a strategic steel for the automotive industry. The application of this type of steel in the vehicle structure allows safety improvement, mass reduction and less fuel consumption. Due to its ultra-high-tensile strength, the PHS components are produced by means of hot-stamping process. Hot stamping is a thermo-mechanical process in which a steel blank is heated at austenitisation temperatures and then is transferred to a press tool, where the material is formed and quenched simultaneously. The steel substrate is often protected with metallic coatings prior to hot stamping to avoid its oxidation and decarburisation. Zinc and aluminium based systems are often used as coatings for automotive applications. However, for hot stamping, the hot-dip aluminium-silicon (Al-Si) system is the most widespread and used. This coating presents good corrosion and oxidation resistance at high temperatures. However, during hot stamping, the initial microstructure and chemical composition of the metallic coating changes completely due to diffusion. These microstructural and compositional changes take place in the austenitisation step. Hence, after hot stamping the whole coating layer becomes a complex multi-layered system in which the sublayers are enriched in either aluminium or iron/silicon. Consequently, the coating properties, including the corrosion properties, also change after hot stamping. However, little is known about the effect of the morphological and compositional changes of the Al-Si coating due to the thermo-mechanical process on its corrosion behaviour and performance. The different sublayers in the coating form different micro-galvanic-couplings, which can affect the global electrochemical behaviour of the system. Therefore, a detailed approach based on local electrochemical techniques was suggested to evaluate the role that each sublayer plays on the electrochemical behaviour. This work aimed at evaluating the effect of the hot-stamping process on the electrochemical behaviour of 22MnB5 coated with hot-dip Al-Si (10 % Si in mass fraction). The morphology-composition of the layered structure was obtained using field emission scanning electron microscopy (FE-SEM) combined with energy dispersive X-ray spectroscopy (EDS). Global corrosion properties were evaluated by open circuit potential (OCP), linear sweep voltammetry (LSV) and accelerated corrosion test. Nonetheless, the effect of each sublayer of the coating-steel system, on the electrochemical behaviour was investigated on a local scale by two complementary techniques: scanning Kelvin probe force microscopy (SKPFM) and electrochemical micro cell. The former was carried out in the samples' cross-section and it shows high lateral resolution, while the latter was done from the top surface in a depth profile approach. Thus, it enabled the local potentiodynamic polarisation in an isolated sublayer. The results obtained during the implementation of this work highlight the high complexity of the Al-Si coating-steel system (composed of several layers), which in turn supports the need for local investigations. The morphology and composition of the coating were shown to be greatly influenced by the hot-stamping process (parameters) and this resulted in considerable variations of the local corrosion and electrochemical behaviour of the coating-steel system.

    Palavras-Chave: electrodeposited coatings; surface hardening; surface treatments; temperature range 0400-1000 k; corrosion resistant alloys; aluminium base alloys; silicon additions; metallurgical effects; sample preparation; materials testing; surface coating; corrosion protection; corrosion pickling; electron microscopy; x-ray spectroscopy; voltametry; photon emission scanning; automotive industry

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  • IPEN-DOC 29520

    COUTO, CAMILA P. ; BAERT, KITTY; COSTA, ISOLDA ; PANOSSIAN, ZEHBOUR; DE GRAEVE, IRIS; TERRYN, HERMAN; ROSSI, JESUALDO L. ; REVILLA, REYNIER I.. The hot-stamping effect on the corrosion properties of the 22MnB5 steel coated with hot-dip aluminum-silicon assessed by a salt spray test and Raman spectroscopy. Corrosion, v. 78, n. 4, p. 339-349, 2022. DOI: 10.5006/4016

    Abstract: The effect of hot stamping on the corrosion properties of boron-manganese 22MnB5 steel coated with hot-dip aluminum-silicon was evaluated under severe conditions by a continuous salt spray test (SST). The corrosion mechanism changed from localized to generalized, as cathodic precipitates were not present after hot stamping. Intrinsic defects in press-hardened steel samples were the reason for severe damage in both metallic coating and steel substrate under SST conditions. The red rust formed at the top surface, characterized as different iron-based compounds, is due to both the iron diffusion from the steel substrate toward the surface and the corrosion of the steel substrate.

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  • IPEN-DOC 27114

    COUTO, CAMILA P. ; COSTA, ISOLDA ; VIVEIROS, BARBARA V.G. de ; ALENCAR, MAICON C. de ; COLOSIO, MARCO A.; PANOSSIAN, ZEHBOUR; ROSSI, JESUALDO L. . The use of scanning vibrating electrode technique to evaluate the effect of hot stamping on the corrosion resistance of 22MnB5 press-hardened steel electroplated with Zn-Ni. Materials Research, v. 22, suppl. 1, p. 1-6, 2019. DOI: 10.1590/1980-5373-MR-2019-0163

    Abstract: Carmakers must achieve the worldwide targets for lightweight materials, safety and reducing the fuel consumption. The use of press-hardened steel (PHS), in vehicle structures has been contributing with these requirements. This type of steel is widely used for the hot-stamping which consists in heating the steel blank to total austenitization temperature and then transferring it from the furnace into the die tool where the steel is formed and quenched at the same time. PHS is usually protect with metallic coatings in order to avoid both steel oxidation and decarburization. Hot-dip Al-Si coating is currently the main used in this application. However, alternative coatings, like zinc-based, are under investigation. This work aims at evaluating the corrosion resistance of the 22MnB5 grade PHS, electroplated with Zn-Ni, before and after hot stamping, using the scanning vibrating electrode technique (SVET). Results from SVET showed that samples prior to hot stamping, the corrosion mechanism was uniform over the exposed surface, and was mainly related to selective dissolution of zinc from the coating. On the other hand, hot stamped samples showed localized corrosion mechanism with decrease in current with time of immersion due to the formation of corrosion products on the exposed surface.

    Palavras-Chave: coatings; metals; hardening; steels; automotive industry; electrolytes; zinc; nickel; electroplating; corrosion resistance; scanning electron microscopy; backscattering; electrons; corrosion protection

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1. Portaria IPEN-CNEN/SP nº 387, que estabeleceu os princípios que nortearam a criação do RDI, clique aqui.


2. A experiência do Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN/SP) na criação de um Repositório Digital Institucional – RDI, clique aqui.

O Repositório Digital do IPEN é um equipamento institucional de acesso aberto, criado com o objetivo de reunir, preservar, disponibilizar e conferir maior visibilidade à Produção Científica publicada pelo Instituto, desde sua criação em 1956.

Operando, inicialmente como uma base de dados referencial o Repositório foi disponibilizado na atual plataforma, em junho de 2015. No Repositório está disponível o acesso ao conteúdo digital de artigos de periódicos, eventos, nacionais e internacionais, livros, capítulos, dissertações, teses e relatórios técnicos.

A elaboração do projeto do RI do IPEN foi iniciado em novembro de 2013, colocado em operação interna em julho de 2014 e disponibilizado na Internet em junho de 2015. Utiliza o software livre Dspace, desenvolvido pelo Massachusetts Institute of Technology (MIT). Para descrição dos metadados adota o padrão Dublin Core. É compatível com o Protocolo de Arquivos Abertos (OAI) permitindo interoperabilidade com repositórios de âmbito nacional e internacional.

O gerenciamento do Repositório está a cargo da Biblioteca do IPEN. Constam neste RI, até o presente momento 20.950 itens que tanto podem ser artigos de periódicos ou de eventos nacionais e internacionais, dissertações e teses, livros, capítulo de livros e relatórios técnicos. Para participar do RI-IPEN é necessário que pelo menos um dos autores tenha vínculo acadêmico ou funcional com o Instituto. Nesta primeira etapa de funcionamento do RI, a coleta das publicações é realizada periodicamente pela equipe da Biblioteca do IPEN, extraindo os dados das bases internacionais tais como a Web of Science, Scopus, INIS, SciElo além de verificar o Currículo Lattes. O RI-IPEN apresenta também um aspecto inovador no seu funcionamento. Por meio de metadados específicos ele está vinculado ao sistema de gerenciamento das atividades do Plano Diretor anual do IPEN (SIGEPI). Com o objetivo de fornecer dados numéricos para a elaboração dos indicadores da Produção Cientifica Institucional, disponibiliza uma tabela estatística registrando em tempo real a inserção de novos itens. Foi criado um metadado que contém um número único para cada integrante da comunidade científica do IPEN. Esse metadado se transformou em um filtro que ao ser acionado apresenta todos os trabalhos de um determinado autor independente das variáveis na forma de citação do seu nome.