Wear and corrosion properties of (Ti1-xCrx)N coatings produced by the ion-plating method

Citation
Kh. Lee et al., Wear and corrosion properties of (Ti1-xCrx)N coatings produced by the ion-plating method, SURF COAT, 142, 2001, pp. 971-977
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
SURFACE & COATINGS TECHNOLOGY
ISSN journal
0257-8972 → ACNP
Volume
142
Year of publication
2001
Pages
971 - 977
Database
ISI
SICI code
0257-8972(200107)142:<971:WACPO(>2.0.ZU;2-V
Abstract
(Ti1-xCrx)N coatings were deposited by an ion-plating technique in a reacto r with two evaporation sources, Ti and Cr, which were evaporated by electro n beam and resistance heating, respectively. The Ti and Cr concentrations i n the coating were controlled by the Ti:Cr evaporation ratio. This study ev aluated the wear and corrosion properties of the (Ti1-xCrx)N coatings. The wear properties were evaluated from the surface morphology, Cr content (x) in the coatings and the effects of the wear debris as well as the transferr ed layer on the wear behavior were also examined. The wear resistance was f ound to increase when Cr was added to TiN. It was found from corrosion expe riments that, at vs. (SCE) < 0.5 V, all samples showed an electrochemical b ehavior similar to that of the CrN coating, irrespective of the Cr content (x) of the coatings. The coatings showed good passivity and the corrosion c urrent was very small, regardless of the Cr content. Above 0.5 V, however, like the CrN coatings, the passivity disappeared and corrosion current incr eased abruptly. (C) 2001 Elsevier Science B.V. All rights reserved.