A comparative investigation of the corrosion and tribocorrosion behaviour of nitrocarburized, gas nitrided, fluidized-bed nitrided, and plasma nitrided plastic mould steel

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Boztepe, E (Author) Other; Alves, AC (Author) Other; Ariza, E (Author) Other; Rocha, LA (Author) Other; Cansever, N (Author) Other; Toptan, F (Author) Other

Journal

Title: Surface and Coatings Technology

Vol. 334

Pages: 116-123

ISSN: 0257-8972

Publisher: Elsevier

Indexing

Scopus - 20 Citations

Other information

Authenticus ID: P-00N-8Q2

DOI: 10.1016/j.surfcoat.2017.11.033

Abstract (EN): The present study aims to compare the corrosion and tribocorrosion behaviour of nitrocarburized, gas-nitrided, fluidized-bed nitrided, and plasma-nitrided Impax Supreme (equivalent to AISI P20) pre-hardened plastic mould steel. Corrosion behaviour was investigated by electrochemical impedance spectroscopy and potentiodynamic polarization in 3.5 wt% NaCl solution. Tribocorrosion tests were performed in the same solution under open circuit potential during sliding against 10 mm alumina balls. Results showed that plasma-nitrided samples presented better corrosion behaviour in terms of tendency to corrosion, corrosion rate, and polarization resistance, as compared to the other studied surface treatments. Together with nitrocarburised samples, plasma-nitrided samples also exhibited lower tendency to corrosion under sliding. © 2017 Elsevier B.V.

Language: English

Type (Professor's evaluation): Scientific