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

• Type: Article in International Scientific Journal
• Date: 1991

Authors

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

Journal

Title: Clinical Materials

Vol. 7

Pages: 31-37

ISSN: 0267-6605

Publisher: Pergamon Press - Elsevier

Indexing

Scopus - 3 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific