Aminoácidos como inibidores de corrosão do aço carbono em meios ácidos
DOI:
https://doi.org/10.33414/rtyc.54.80-92.2025Palavras-chave:
Aço SAE 1010, triptofano, ácido glutâmico, ácido aspártico, fenilalaninaResumo
A corrosão do aço em meios ácidos representa um desafio em várias indústrias, como petróleo e gás. Neste estudo, o potencial dos aminoácidos triptofano (TRP), ácido glutâmico (GLU), ácido aspártico (ASP) e fenilalanina (PHE) como inibidores de corrosão para aço SAE 1010 em uma solução de HCl 0,1 M foi investigado. Testes eletroquímicos, incluindo resistência à polarização linear, potencial de circuito aberto e curvas de polarização potenciodinâmica (Tafel), bem como análise de superfície por microscopia eletrônica de varredura (MEV) e espectroscopia de raios X por dispersão de energia (EDS), foram realizados. Os resultados revelaram que TRP, GLU e ASP exibiram propriedades inibitórias, com TRP apresentando uma eficiência de inibição de 72% a uma concentração de 1000 ppm. Em contraste, PHE não mostrou um efeito inibitório significativo. A análise SEM-EDS confirmou que TRP formou uma película protetora mais eficaz na superfície do aço.
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Copyright (c) 2025 Christian Byrne, Santino Mariano Toro, Nicole Rocío Uviedo Barone , Oriana D’Alessandro
Este trabalho está licenciado sob uma licença Creative Commons Attribution-NonCommercial 4.0 International License.
