Electrochemical Characterization of Multilayer Cr/CrN-Based Coatings

Coatings

Fabio C. Caiazzo¹  Valentina Sisti²  Stefano P. Trasatti¹ 

[1] Università degli Studi di Milano, Dipartimento di Chimica, Via C. Golgi 19, 20133 Milano, Italy; E-Mails:;Trattamenti Termici Nervianesi (C.R.T. Division) SpA Nerviano, Via Primo Maggio 30, 20014 Nerviano (MI), Italy; E-Mail:

关键词: multilayer coating;    CrN-based coating;    Cr-based coating;    physical vapor deposition;    cathodic arc;    steel substrate;    corrosion;    potentiodynamic polarization;   

DOI  :  10.3390/coatings4030508

来源: mdpi

【 摘 要 】

In this work, a series of mono-and multilayer coatings were considered. They consisted of CrN and Cr prepared by physical vapor deposition with a cathodic arc. The most common steels for molds of plastics were chosen as substrates: X37CrMoV5-1 (SMV3), X2NiCoMo18-8-5 (MARVAL M1), X105CrCoMo18-2 (N690) and X40CrMo15 (X13T6). The samples were made with surface state conditions reproducing the main finishes required for molding of plastics: mirror, electro-eroded, sandblasted and ground finish. The coatings were characterized morphologically and chemically. The corrosion behavior of bare and coated steels was evaluated by electrochemical methods.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.