Corrosivity
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Corrosão em estacas metálicas de torres de energia elétrica
RESUMO Para se manter a qualidade e continuidade do fornecimento de energia é essencial monitorar a integridade da estrutura das torres de transmissão usualmente executadas em aço. Por isso, avaliou-se a corrosividade do solo na região amazônica no trecho Vila do Conde-Tucuruí́, no estado do Pará. Foi analisado a resistividade, potencial estrutura-so
Matéria (Rio J.). Publicado em: 20/05/2019
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2. Atmospheric corrosion of Nylon 6,6 in Mauritius
ABSTRACT Plastics are being more and more commonly used for outdoor applications in Mauritius. In this context, the atmospheric corrosion degradation behaviour of nylon 6,6 was observed in the Mauritian atmosphere, having a corrosivity category of C3, according to ISO 9223. The crack width, depth and extent of the cracks formed on the surface were investigat
Matéria (Rio J.). Publicado em: 2016-12
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3. Effects of Adding Some Natural Substances to Biodiesel to Control its Effect on Carbon Steel Corrosion
Biodiesel consists of long-chain fatty acid esters and it presents relatively inert behavior right after its production. However, structural changes occur during its storage, as this fuel has low oxidative stability, fact that increases its corrosivity. The problem of corrosion has become increasingly relevant due to the Government's policy of setting a grad
Mat. Res.. Publicado em: 23/10/2015
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4. Corrosion of steel reinforced concrete in the tropical coastal atmosphere of Havana City, Cuba
The influence of chloride deposition rate on concrete using an atmospheric corrosion approach is rarely studied in the literature. Seven exposure sites were selected in Havana City, Cuba, for exposure of reinforced concrete samples. Two significantly different atmospheric corrosivity levels with respect to corrosion of steel reinforced concrete were observed
Quím. Nova. Publicado em: 2013
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5. Avaliação de ensaios simulativos de corrosão e biocorrosão em sistemas estático e dinâmico de revestimentos aplicados em aço carbono
The global cost caused by the corrosion represents a high economical loss. Several are the attempts of to retard the corrosion process, standing out the use of metallic and organic coatings. In this work, the anticorrosive properties coatings applied on carbon steel used in the industrial areas as alternatives of anticorrosive protection were investigated, b
Publicado em: 2008
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6. Análise crítica do ensaio NACE TM-0172 para verificação da agressividade de derivados de petróleo. / Critical analysis of the NACE TM-0172 test to verify the corrosive properties of distillate fuels.
Before transporting distillate fuels by pipelines, their corrosive properties are verified by the NACE TM-0172 test ?Determining Corrosive Properties of Cargoes in Petroleum Product Pipelines? (NACE, 2001). This test, being based on a visual evaluation, has as its goal, neither the determination of the corrosion rate nor the verification of the corrosion typ
Publicado em: 2006
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7. Causas e formas de corrosão na unidade de recuperação de enxofre da Refinaria Gabriel Passos (REGAP/PETROBRAS)
This work aims at to contribute for the determination of the mechanisms and forms of steel corrosion carbon that occurs in equipment of the Sulphur Recovery Unit (URE) of the Refinery Gabriel Passos (REGAP/PETROBRAS). The products of the refining of the oil pass for treatment processes to take care of to the specifications related to the corrosivity, percent
Publicado em: 2006