Estudo da susceptibilidade à corrosão da liga de alumínio AA1100 em fertilizantes mistos

The AA1100 aluminum alloy is a commercially pure alloy (99.00% pure) that has an excellent conformability and corrosion resistance, having a great use in the chemical and electrical industries. Furthermore, other excellent property presented by the aluminum is the low specific weight which makes it...

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Autor principal: Sanches, Fernanda Tartarini
Formato: Trabalho de Conclusão de Curso (Graduação)
Idioma: Português
Publicado em: Universidade Tecnológica Federal do Paraná 2020
Assuntos:
Acesso em linha: http://repositorio.utfpr.edu.br/jspui/handle/1/12187
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Resumo: The AA1100 aluminum alloy is a commercially pure alloy (99.00% pure) that has an excellent conformability and corrosion resistance, having a great use in the chemical and electrical industries. Furthermore, other excellent property presented by the aluminum is the low specific weight which makes it very used in the transportation industry because of the lightness. Currently, many companies are using aluminum alloys to produce mobile silos and trailers that carry fertilizers and other products. The fertilizers are very used and the corrosion caused by them is a well-known problem; however, it was not very studied for the AA1100 aluminum alloy. The need for this investigation came up from a case study carried out in a company from Parana that found a possible corrosion in their trailers (made with AA1100 alloy) because of carrying mixed fertilizers. The goal of this project was the investigation of the characteristics and corrosion susceptibility of the AA1100 aluminum alloy in order to evaluate the corrosion kinetics on this material and its behavior when exposed to mixed fertilizers. Using the planned interval test, immersion tests of the AA1100 aluminum alloy was performed on three compositions of mixed fertilizers, providing the mass losses information of each sample. The corrosion rate and penetration of corrosion were evaluated in order to study the alloy behavior according to time. It was concluded that the referred alloy is resistant to corrosion for that fertilizer compositions and conditions evaluated. The corrosion found by the company could either have happened because of the use of a different material or a corrosive environment not yet analyzed.