Electrochemical behaviour of laser treated AISI 316L stainless steel surfaces in a physiological solution

• Tipo: Artigo em Revista Científica Internacional
• Data: 1991

Autores

Silva, RA (Autor) Outra; Mário Adolfo Barbosa (Autor) FEUP; Vilar, R (Autor) Outra; Conde, O (Autor) Outra; Da Cunha Belo, M (Autor) Outra; Sutherland, I (Autor) Outra

Revista

Título: Clinical Materials

Vol. 7

Páginas: 31-37

ISSN: 0267-6605

Editora: Pergamon Press - Elsevier

Indexação

Scopus - 3 Citações

Outras Informações

ID Authenticus: P-007-592

Abstract (EN): The aim of this work was to study the electrochemical behaviour of laser treated AISI 316L stainless steel surfaces in a physiological solution. Conditions leading to crevice corrosion have been produced in a cell especially developed for open-circuit experiments. Cyclic polarization curves and impedance measurements have been obtained using crevice-free specimens. Surface modifications have been evaluated by scanning electron microscopy and ESCA-XPS (X-ray photoelectron spectroscopy) analysis. The results show that the laser treatment improves the corrosion resistance of AISI 316L stainless steel. This improvement is not associated with distinctive changes in film properties, rather it is attributed to formation of a sulphide-free austenite-ferrite structure.The aim of this work was to study the electrochemical behaviour of laser treated AISI 316L stainless steel surfaces in a physiological solution. Conditions leading to crevice corrosion have been produced in a cell especially developed for open-circuit experiments. Cyclic polarization curves and impedance measurements have been obtained using crevice-free specimens. Surface modifications have been obtained using crevice-free specimens. Surface modifications have been evaluated by scanning electron microscopy and ESCA-XPS (X-ray photoelectron spectroscopy) analysis. The results show that the laser treatment improves the corrosion resistance of AISI 316L stainless steel. This improvement is not associated with distinctive changes in film properties, rather it is attributed to formation of a sulphide-free austenite-ferrite structure.

Idioma: Inglês

Tipo (Avaliação Docente): Científica