CORROSÃO E BIOCORROSÃO EM BIODIESEL E DIESEL S10 DO COBRE ELETRODEPOSITADO SOBRE AÇO CARBONO
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações do UNICENTRO |
Texto Completo: | http://tede.unicentro.br:8080/jspui/handle/jspui/1075 |
Resumo: | Among the metal most used in industry and the automotive industry is the carbon steel, and sometimes with a coating of other metals or materials. Also they employ zinc alloys with iron, nickel or aluminum, and aluminum, metallic copper and tin. Similarly stainless steel and galvanized carbon steel has been widely used because they have a good value for money. However, it is known that metallic materials suffer corrosive processes, which are characterized by the degradation of a function of the metal through its reaction with other metals and it is in contact. When the metal part is damaged, it must be replaced, resulting in high maintenance cost of the equipment where you are. In addition to the costs for replacement of corroded parts, there are the indirect losses to loss of product, process efficiency loss and contamination by corrosion products. more paying attention to this process when it occurs in the middle of fuels, it is noted that the determination of corrosion is possible by means of electrochemical techniques, however, such as fuels having low conductivity, this measurement becomes difficult. There are also standards like ABNT 14359 and standards such as ASTM D130 establishing methods for determining the corrosion of fuel, however, corrosion is assessed qualitatively by visual comparison with standards, which can lead to results of uncertainty. In this context, the indirect determination of corrosion in fuel is an alternative, since it is based on the fuel and subsequent immersion metal immersion in a strong electrolyte, enabling the quantification of corrosion occurring by electrochemical data. In this study, we applied an indirect method for determination of corrosion and metal substrates biocorrosion carbon steel, copper and carbon steel coated with copper. Initially, the metal substrates were immersed in B100 biodiesel or diesel S10 and thereafter in a NaCl solution 0.5 mol l-¹ for potential open circuit measurements, electrochemical impedance spectroscopy and anodic potentiodynamic polarization measurements. Also vi employed the weight loss methods, evaluating the corrosion rate by varying the mass of the sample, and scanning electron microscopy (SEM) which consists of a morphological analysis of the sample to the evaluation of corrosive processes occurring in it. The methodology is showed as an efficient alternative and easily performed to evaluate the corrosion of metal samples. The open circuit potential measurements (PCA) showed that the copper coating changed the base metal PCA when immersed in biodiesel by shifting it to more negative values, indicating less resistance to corrosion. The samples immersed in diesel fuel showed higher impedance values, suggesting that biodiesel is more corrosive. Higher current densities were measured in the polarization of the samples coated with copper, indicating a lower corrosion resistance. In microbiological corrosion tests the highest impedance values were obtained for the sample that had the copper coating, demonstrating that this condition has lower corrosion resistance. |
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Banczek, Everson do Pradohttp://lattes.cnpq.br/752357313959216600949359980http://lattes.cnpq.br/2062890446887686Johann, Julian2019-05-15T13:53:29Z2016-04-05JOHANN, Julian. CORROSÃO E BIOCORROSÃO EM BIODIESEL E DIESEL S10 DO COBRE ELETRODEPOSITADO SOBRE AÇO CARBONO. 2016. 87 f. Dissertação (Programa de Pós-Graduação em Bioenergia - Mestrado) - Universidade Estadual do Centro-Oeste, Guarapuava - PR.http://tede.unicentro.br:8080/jspui/handle/jspui/1075Among the metal most used in industry and the automotive industry is the carbon steel, and sometimes with a coating of other metals or materials. Also they employ zinc alloys with iron, nickel or aluminum, and aluminum, metallic copper and tin. Similarly stainless steel and galvanized carbon steel has been widely used because they have a good value for money. However, it is known that metallic materials suffer corrosive processes, which are characterized by the degradation of a function of the metal through its reaction with other metals and it is in contact. When the metal part is damaged, it must be replaced, resulting in high maintenance cost of the equipment where you are. In addition to the costs for replacement of corroded parts, there are the indirect losses to loss of product, process efficiency loss and contamination by corrosion products. more paying attention to this process when it occurs in the middle of fuels, it is noted that the determination of corrosion is possible by means of electrochemical techniques, however, such as fuels having low conductivity, this measurement becomes difficult. There are also standards like ABNT 14359 and standards such as ASTM D130 establishing methods for determining the corrosion of fuel, however, corrosion is assessed qualitatively by visual comparison with standards, which can lead to results of uncertainty. In this context, the indirect determination of corrosion in fuel is an alternative, since it is based on the fuel and subsequent immersion metal immersion in a strong electrolyte, enabling the quantification of corrosion occurring by electrochemical data. In this study, we applied an indirect method for determination of corrosion and metal substrates biocorrosion carbon steel, copper and carbon steel coated with copper. Initially, the metal substrates were immersed in B100 biodiesel or diesel S10 and thereafter in a NaCl solution 0.5 mol l-¹ for potential open circuit measurements, electrochemical impedance spectroscopy and anodic potentiodynamic polarization measurements. Also vi employed the weight loss methods, evaluating the corrosion rate by varying the mass of the sample, and scanning electron microscopy (SEM) which consists of a morphological analysis of the sample to the evaluation of corrosive processes occurring in it. The methodology is showed as an efficient alternative and easily performed to evaluate the corrosion of metal samples. The open circuit potential measurements (PCA) showed that the copper coating changed the base metal PCA when immersed in biodiesel by shifting it to more negative values, indicating less resistance to corrosion. The samples immersed in diesel fuel showed higher impedance values, suggesting that biodiesel is more corrosive. Higher current densities were measured in the polarization of the samples coated with copper, indicating a lower corrosion resistance. In microbiological corrosion tests the highest impedance values were obtained for the sample that had the copper coating, demonstrating that this condition has lower corrosion resistance.Dentre os metais mais empregados na indústria e no ramo automobilístico está o aço carbono, sendo algumas vezes com revestimento de outros metais ou materiais. Também se empregam ligas de zinco com ferro, níquel ou alumínio, além de alumínio, cobre e estanho metálicos. Similarmente o aço inoxidável e o aço carbono galvanizado vem sendo amplamente empregados por possuírem um bom custo-benefício. Porém, sabe-se que materiais metálicos sofrem processos corrosivos, sendo estes caracterizados pela degradação de um metal em função da sua reação com o meio e outros metais que se encontra em contato. Quando a peça metálica se encontra deteriorada, ela precisa ser substituída, acarretando na elevação do custo de manutenção do equipamento onde se encontra. Além dos custos para reposição das peças corroídas, há ainda os prejuízos indiretos com perda de produto, perda de eficiência do processo e de contaminação por produtos da corrosão. Atentando-se mais para este processo quando ocorre em meio de combustíveis, nota-se que a determinação da corrosão é possível por meio de técnicas eletroquímicas, entretanto, como os combustíveis apresentam baixas condutividades, se torna difícil essa medição. Existem também normas como a ABNT 14359 e padrões como o da ASTM D130 que estabelecem métodos de determinação da corrosão em combustíveis, porém, a corrosão é avaliada de maneira qualitativa, pela comparação visual com padrões, o que pode acarretar em incertezas de resultados. Neste contexto, a determinação indireta da corrosão em combustíveis surge como alternativa, visto que se baseia na imersão do metal no combustível e posterior imersão em um eletrólito forte, possibilitando a quantificação da corrosão ocorrida por meio dos dados eletroquímicos. Neste estudo, aplicou-se um método indireto para determinação da corrosão e biocorrosão de substratos metálicos de aço carbono, cobre e aço carbono revestido com cobre. Inicialmente os substratos iv metálicos foram imersos em biodiesel B100 ou diesel S10 e posteriormente, em uma solução de NaCl 0,5 mol.L-¹ para as medidas de potencial de circuito aberto, espectroscopia de impedância eletroquímica e medidas de polarização potenciodinâmica anódica. Também se empregaram as metodologias de perda de massa, que avalia a taxa de corrosão pela variação da massa da amostra, e a microscopia eletrônica de varredura (MEV) que consiste em uma análise morfológica da amostra para a avaliação dos processos corrosivos ocorridos na mesma. A metodologia empregada se mostrou como uma alternativa eficiente e de fácil execução para a avaliação da corrosão de amostras metálicas. As medidas de potencial de circuito aberto (PCA) mostraram que o revestimento de cobre alterou o PCA do metal base quando imerso em biodiesel, deslocando-o para valores mais negativos, indicando menor resistência à corrosão. As amostras imersas em diesel apresentaram maiores valores de impedância, sugerindo que o biodiesel é mais corrosivo. Maiores densidades de corrente foram medidas na polarização das amostras revestidas com cobre, indicando uma menor resistência à corrosão. Nos ensaios de corrosão microbiológica os maiores valores de impedância foram obtidos para a amostra que possuía o revestimento de cobre, demonstrando que esta condição possui menor resistência à corrosão.Submitted by Fabiano Jucá (fjuca@unicentro.br) on 2019-05-15T13:53:29Z No. of bitstreams: 1 Dissertação Final - Julian Johann.pdf: 1315062 bytes, checksum: 6ced5e1d7182afafb43da9bdcbec5a97 (MD5)Made available in DSpace on 2019-05-15T13:53:29Z (GMT). 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dc.title.por.fl_str_mv |
CORROSÃO E BIOCORROSÃO EM BIODIESEL E DIESEL S10 DO COBRE ELETRODEPOSITADO SOBRE AÇO CARBONO |
title |
CORROSÃO E BIOCORROSÃO EM BIODIESEL E DIESEL S10 DO COBRE ELETRODEPOSITADO SOBRE AÇO CARBONO |
spellingShingle |
CORROSÃO E BIOCORROSÃO EM BIODIESEL E DIESEL S10 DO COBRE ELETRODEPOSITADO SOBRE AÇO CARBONO Johann, Julian biocombustível ensaios eletroquímicos aço carbono SAE 1045 biofuel electrochemical tests carbon steel SAE 1045 CIENCIAS EXATAS E DA TERRA::QUIMICA ENGENHARIAS CIENCIAS BIOLOGICAS CIENCIAS SOCIAIS APLICADAS::ADMINISTRACAO |
title_short |
CORROSÃO E BIOCORROSÃO EM BIODIESEL E DIESEL S10 DO COBRE ELETRODEPOSITADO SOBRE AÇO CARBONO |
title_full |
CORROSÃO E BIOCORROSÃO EM BIODIESEL E DIESEL S10 DO COBRE ELETRODEPOSITADO SOBRE AÇO CARBONO |
title_fullStr |
CORROSÃO E BIOCORROSÃO EM BIODIESEL E DIESEL S10 DO COBRE ELETRODEPOSITADO SOBRE AÇO CARBONO |
title_full_unstemmed |
CORROSÃO E BIOCORROSÃO EM BIODIESEL E DIESEL S10 DO COBRE ELETRODEPOSITADO SOBRE AÇO CARBONO |
title_sort |
CORROSÃO E BIOCORROSÃO EM BIODIESEL E DIESEL S10 DO COBRE ELETRODEPOSITADO SOBRE AÇO CARBONO |
author |
Johann, Julian |
author_facet |
Johann, Julian |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Banczek, Everson do Prado |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/7523573139592166 |
dc.contributor.authorID.fl_str_mv |
00949359980 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/2062890446887686 |
dc.contributor.author.fl_str_mv |
Johann, Julian |
contributor_str_mv |
Banczek, Everson do Prado |
dc.subject.por.fl_str_mv |
biocombustível ensaios eletroquímicos aço carbono SAE 1045 |
topic |
biocombustível ensaios eletroquímicos aço carbono SAE 1045 biofuel electrochemical tests carbon steel SAE 1045 CIENCIAS EXATAS E DA TERRA::QUIMICA ENGENHARIAS CIENCIAS BIOLOGICAS CIENCIAS SOCIAIS APLICADAS::ADMINISTRACAO |
dc.subject.eng.fl_str_mv |
biofuel electrochemical tests carbon steel SAE 1045 |
dc.subject.cnpq.fl_str_mv |
CIENCIAS EXATAS E DA TERRA::QUIMICA ENGENHARIAS CIENCIAS BIOLOGICAS CIENCIAS SOCIAIS APLICADAS::ADMINISTRACAO |
description |
Among the metal most used in industry and the automotive industry is the carbon steel, and sometimes with a coating of other metals or materials. Also they employ zinc alloys with iron, nickel or aluminum, and aluminum, metallic copper and tin. Similarly stainless steel and galvanized carbon steel has been widely used because they have a good value for money. However, it is known that metallic materials suffer corrosive processes, which are characterized by the degradation of a function of the metal through its reaction with other metals and it is in contact. When the metal part is damaged, it must be replaced, resulting in high maintenance cost of the equipment where you are. In addition to the costs for replacement of corroded parts, there are the indirect losses to loss of product, process efficiency loss and contamination by corrosion products. more paying attention to this process when it occurs in the middle of fuels, it is noted that the determination of corrosion is possible by means of electrochemical techniques, however, such as fuels having low conductivity, this measurement becomes difficult. There are also standards like ABNT 14359 and standards such as ASTM D130 establishing methods for determining the corrosion of fuel, however, corrosion is assessed qualitatively by visual comparison with standards, which can lead to results of uncertainty. In this context, the indirect determination of corrosion in fuel is an alternative, since it is based on the fuel and subsequent immersion metal immersion in a strong electrolyte, enabling the quantification of corrosion occurring by electrochemical data. In this study, we applied an indirect method for determination of corrosion and metal substrates biocorrosion carbon steel, copper and carbon steel coated with copper. Initially, the metal substrates were immersed in B100 biodiesel or diesel S10 and thereafter in a NaCl solution 0.5 mol l-¹ for potential open circuit measurements, electrochemical impedance spectroscopy and anodic potentiodynamic polarization measurements. Also vi employed the weight loss methods, evaluating the corrosion rate by varying the mass of the sample, and scanning electron microscopy (SEM) which consists of a morphological analysis of the sample to the evaluation of corrosive processes occurring in it. The methodology is showed as an efficient alternative and easily performed to evaluate the corrosion of metal samples. The open circuit potential measurements (PCA) showed that the copper coating changed the base metal PCA when immersed in biodiesel by shifting it to more negative values, indicating less resistance to corrosion. The samples immersed in diesel fuel showed higher impedance values, suggesting that biodiesel is more corrosive. Higher current densities were measured in the polarization of the samples coated with copper, indicating a lower corrosion resistance. In microbiological corrosion tests the highest impedance values were obtained for the sample that had the copper coating, demonstrating that this condition has lower corrosion resistance. |
publishDate |
2016 |
dc.date.issued.fl_str_mv |
2016-04-05 |
dc.date.accessioned.fl_str_mv |
2019-05-15T13:53:29Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
JOHANN, Julian. CORROSÃO E BIOCORROSÃO EM BIODIESEL E DIESEL S10 DO COBRE ELETRODEPOSITADO SOBRE AÇO CARBONO. 2016. 87 f. Dissertação (Programa de Pós-Graduação em Bioenergia - Mestrado) - Universidade Estadual do Centro-Oeste, Guarapuava - PR. |
dc.identifier.uri.fl_str_mv |
http://tede.unicentro.br:8080/jspui/handle/jspui/1075 |
identifier_str_mv |
JOHANN, Julian. CORROSÃO E BIOCORROSÃO EM BIODIESEL E DIESEL S10 DO COBRE ELETRODEPOSITADO SOBRE AÇO CARBONO. 2016. 87 f. Dissertação (Programa de Pós-Graduação em Bioenergia - Mestrado) - Universidade Estadual do Centro-Oeste, Guarapuava - PR. |
url |
http://tede.unicentro.br:8080/jspui/handle/jspui/1075 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.program.fl_str_mv |
-2202725866144043770 |
dc.relation.confidence.fl_str_mv |
600 600 600 600 600 600 600 |
dc.relation.department.fl_str_mv |
-7661102638863479717 |
dc.relation.cnpq.fl_str_mv |
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dc.relation.sponsorship.fl_str_mv |
2075167498588264571 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual do Centro-Oeste |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Bioenergia (Mestrado) |
dc.publisher.initials.fl_str_mv |
UNICENTRO |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Unicentro::Departamento de Ciências Agrárias e Ambientais |
publisher.none.fl_str_mv |
Universidade Estadual do Centro-Oeste |
dc.source.none.fl_str_mv |
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Universidade Estadual do Centro-Oeste (UNICENTRO) |
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UNICENTRO |
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UNICENTRO |
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Biblioteca Digital de Teses e Dissertações do UNICENTRO |
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Biblioteca Digital de Teses e Dissertações do UNICENTRO |
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Biblioteca Digital de Teses e Dissertações do UNICENTRO - Universidade Estadual do Centro-Oeste (UNICENTRO) |
repository.mail.fl_str_mv |
repositorio@unicentro.br||fabianoqueiroz@yahoo.com.br |
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1801859374768979968 |