Corrosion and Wear Behavior of CAE Deposited CrN-PVD Coatings

Lorenzo Montesano; C. Petrogalli; A. Pola; Marcello Gelfi; V. Sisti; G.M. La Vecchia

doi:10.4028/www.scientific.net/KEM.577-578.641

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 577-578Corrosion and Wear Behavior of CAE Deposited...

Corrosion and Wear Behavior of CAE Deposited CrN-PVD Coatings

Abstract:

Corrosion and wear resistance of Cathodic Arc Evaporation (CAE) CrN coatings deposited on a tool steel were investigated considering the effect of the number of layers (mono or double) and the influence of defects. The CrN coatings were characterized for mechanical (scratch, nanoindentation test), corrosion behavior (polarizarion tests) and tribological properties (pin-on-disk tests). Scanning Electron Microscope analyses on samples before and after the tests were also made in order to identify the type of the defects and the role they play in the coating damage. Monolayer coating shows a good wear behavior with a stable and low friction coefficient, but its corrosion performance is poor. On the contrary, the presence of an interface into the double layer improves the corrosion resistance, but it is a weak point for the coating delamination during wear tests.

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Periodical:

Key Engineering Materials (Volumes 577-578)

Pages:

641-644

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.577-578.641

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Online since:

September 2013

Authors:

Lorenzo Montesano, C. Petrogalli, A. Pola, Marcello Gelfi, V. Sisti, G.M. La Vecchia

Keywords:

Corrosion, PVD Coatings, Wear

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