Title

Effect of composition and thickness on corrosion behavior of TiN and ZrN thin films

Document Type

Article

Date of Original Version

12-10-1993

Abstract

The corrosion behavior of TiN and ZrN coatings at thickness from 5 to 10 μm on AISI 304 stainless in 0.5 N NaCl solution was investigated. Electrochemical impedance spectroscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were the techniques applied to characterize fully the corrosion behavior. From the data, TiN acts as an inert coating, while the ZrN coating reacts with the environment. It is proposed that the nitrogen in the layer is replaced by oxygen, forming a near-surface film of zirconium oxide. It is this film which possesses good corrosion resistance and is responsible for the corrosion protection thought to be afforded by the ZrN layer initially deposited on the surface. © 1993.

Publication Title

Surface and Coatings Technology

Volume

62

Issue

1-3

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