Please use this identifier to cite or link to this item: http://repositorio.ufc.br/handle/riufc/72374
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dc.contributor.authorLeite, Adriana de Oliveira Sousa-
dc.contributor.authorAraújo, Walney Silva-
dc.contributor.authorMargarit-Mattos, Isabel Cristina Pereira-
dc.contributor.authorCorreia, Adriana Nunes-
dc.contributor.authorLima Neto, Pedro de-
dc.date.accessioned2023-05-18T16:58:40Z-
dc.date.available2023-05-18T16:58:40Z-
dc.date.issued2005-
dc.identifier.citationLEITE, Adriana de Oliveira Sousa; ARAÚJO, Walney Silva; MARGARIT, Isabel Cristina Pereira; CORREIA, Adriana Nunes; LIMA NETO, Pedro de. Evaluation of the anticorrosive properties of environmental friendly inorganic corrosion inhibitors pigments. Journal of the Brazilian Chemical Society, São Paulo, v.16, n. 4, p. 756-762, 2005pt_BR
dc.identifier.issn0103-5053-
dc.identifier.otherDOI: https://doi.org/10.1590/S0103-50532005000500013-
dc.identifier.urihttp://www.repositorio.ufc.br/handle/riufc/72374-
dc.description.abstractAnticorrosive properties of the following environmental friendly inorganic pigments were evaluated: zinc phosphate (ZP), zinc molybdate (ZM), zinc calcium molybdate (ZCM), zinc phosphomolybdate (ZPM) and zinc calcium phosphomolybdate (ZCPM). AISI 1010 steel samples were immersed in 10-2 mol dm-3 NaCl aqueous solution saturated with one of the pigments, followed by mass loss measurements, by monitoring the open circuit potential with immersion time and by potentiodynamic linear polarization at 1 mV s-1. The corrosion products on the steel surface were characterized by Scanning Electron Microscopy, Energy Dispersive X-ray and X-rays Diffraction analyses. All the pigments inhibited the corrosion of steel. The films formed on the steel surface protect the substrate against corrosion. The results suggest a synergic effect of phosphate and molybdate compounds in the phosphomolybdate-based pigments, improving the corrosion resistance of steel. The ZMP and ZCPM decreased the corrosion rate by a factor of 2.15 and 3.50, respectively.pt_BR
dc.language.isoenpt_BR
dc.publisherJournal of the Brazilian Chemical Societypt_BR
dc.subjectSteelpt_BR
dc.subjectCorrosionpt_BR
dc.subjectAnticorrosive pigmentspt_BR
dc.subjectMass losspt_BR
dc.subjectElectrochemical testspt_BR
dc.subjectSurface analysispt_BR
dc.subjectAçopt_BR
dc.subjectCorrosãopt_BR
dc.subjectPigmentos anticorrosivospt_BR
dc.subjectPerda de massapt_BR
dc.subjectTestes eletroquimicospt_BR
dc.subjectAnálise de superfíciept_BR
dc.titleEvaluation of the anticorrosive properties of environmental friendly inorganic corrosion inhibitors pigmentspt_BR
dc.typeArtigo de Periódicopt_BR
dc.description.abstract-ptbrNeste trabalho foram estudadas as propriedades anticorrosivas de cinco pigmentos inorgânicos comerciais considerados ecologicamente corretos: fosfato de zinco (ZP), molibdato de zinco (ZM), molibdato de zinco e cálcio (ZCM), fosforomolibdato de zinco (ZPM) e fosforomolibdato de zinco e cálcio (ZCPM). Amostras de aço AISI 1010 foram imersas em solução aquosa de NaCl 10-2 mol dm-3 saturada com um dos pigmentos, seguido de medidas de perda de massa, monitoramento do potencial de circuito aberto com o tempo de imersão e polarização linear potenciodinâmica a 1 mV s-1. Os produtos de corrosão foram caracterizados por Microscopia Eletrônica de Varredura, Energia Dispersiva da raios-X e Difração de raios-X. Todos os pigmentos inibiram a corrosão do aço. Os filmes formados na superfície protegem o aço contra corrosão. Os resultados sugerem efeito sinérgico entre os compostos de fosfato e molibdato nos pigmentos a base de fosforomolibdato. Os pigmentos ZMP e ZCPM diminuíram a taxa de corrosão por um fator de 2,15 e 3,50, respectivamente.pt_BR
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