Characterization of early 20th-century German bandstands metal alloys exposed to the Amazonian weathering of Belém, Brazil

Thainá Thais Silva  Oliveira; Flávia Olegário Palácios

doi:10.14568/cp35869

Autores

Thainá Thais Silva Oliveira Federal University of Pará, Cultural Heritage Sciences Graduate Program, Architecture and Urban Planning Graduate Program, Castilhos França Blvd. (w/o no.), 66010-060 Belém, Pará, Brazil https://orcid.org/0000-0002-4973-1723
Flávia Olegário Palácios Federal University of Pará, Cultural Heritage Sciences Graduate Program, Architecture and Urban Planning Graduate Program, Castilhos França Blvd. (w/o no.), 66010-060 Belém, Pará, Brazil; Federal University of Pará, Conservation and Restoration Faculty, Castilhos França Blvd. (w/o no.), 66010-060 Belém, Pará, Brazil https://orcid.org/0000-0003-2818-2507

DOI:

https://doi.org/10.14568/cp35869

Palavras-chave:

Ligas de ferro, Ferro fundido, Produtos de corrosão, Arquitetura do ferro, Património arquitetónico

Resumo

O progresso da indústria do ferro nos séculos XVIII e XIX deixou um património edificado notável em países não europeus, como o Brasil. Em particular, a cidade de Belém possui cinco coretos metálicos importados da Alemanha e instalados na Praça Batista Campos, em 1903. Apesar do seu significado histórico, arquitetónico, técnico e social, estes coretos estão sujeitos a uma gradual deterioração, descaracterização e ações de manutenção inadequadas resultantes da falta de conhecimento. Este artigo pretende caracterizar as ligas metálicas e os produtos de corrosão destes coretos. Foram realizadas análises por microscopia eletrónica de varrimento, espectroscopia de raios X por dispersão em energia e difração de raios X em diferentes componentes construtivos. Os resultados mostraram o uso abundante de ferro fundido cinza nodular, a aplicação de aço, o tipo de corrosão e o estado de conservação dos revestimentos. Essas informações ampliam o conhecimento sobre a utilização de ligas ferrosas e sua corrosão em edifícios históricos.

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