Journal
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
Volume 47, Issue 2, Pages 116-120Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1179/1743278211Y.0000000028
Keywords
Explosion cladding; ASME TP-316L steel; Electrochemical impedance spectroscopy; Anodic potentiodynamic polarisation
Funding
- Conselho Nacional de Desenvolvimento Cientifico and Tecnologico (CNPq)
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
- Fundacao de Amparo a Pesquisa do Estado de Minas Gerais (FAPEMIG)
- Centro de Desenvolvimento de Tecnologia Nuclear (CDTN)
- Pontificia Universidade Catolica de Minas Gerais (PUC-MG)
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The ASME AS-240TP-316L stainless steel in the form of a sheet 3 mm in thickness and the ASTM SA-516 grade 60N steel substrate are joined by explosion cladding. The objective of this paper is to evaluate the electrochemical behaviour of a cladding plate of carbon-manganese steel and stainless steel 316L when compared to non-cladding plate 316L steel. The effect of the cladding process on the corrosion resistance was evaluated in a medium of aqueous solution of sulphuric acid. Anodic potentiodynamic polarisation curves were obtained to study the passivation behaviour of the cladding plate. Electrochemical impedance spectroscopy was performed to elucidate the corrosion mechanism of the cladding plate. The non-cladding ASME AS-240 TP-316L steel showed a higher corrosion potential, a lower passivation current density and a higher polarisation resistance, exhibiting a higher corrosion resistance than cladding 316L steel.
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