Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/5176
Title: | Electrochemical corrosion of magnetron sputtered WTiN-coated mild steels in a chloride medium | Authors: | Alves, Valéria A. Brett, Christopher M. A. Cavaleiro, Albano |
Keywords: | Corrosion; Coated steels; Sputtering; Carbon steel; High speed steel; Chromium steel | Issue Date: | 2002 | Citation: | Surface and Coatings Technology. 161:2-3 (2002) 257-266 | Abstract: | The electrochemical corrosion behaviour of WTiN coatings, of composition W 31, Ti 28 and N 40 at.% sputtered on carbon steel, chromium steel and high speed steel (HSS) has been investigated and the effect of the steel heat treatment on the steel/WTiN system performance explored. Open circuit potential measurements, polarisation curves and electrochemical impedance spectroscopy were used, together with X-ray diffraction and scanning electron microscopy to characterise the corroded and uncorroded coating/substrate systems. It was found that the influence of the substrate on corrosion resistance follows the order Carbon Steel<HSS<Chromium Steel. The best performance of the chromium steel/WTiN system can be associated with the higher compactness of the protective coating, since there is strong evidence that it is inert so that electrolyte penetration through the coating defects and pores is responsible for the initiation of substrate corrosion. Heat treatment of the substrate has some influence on the corrosion of the HSS/coating system, suggesting that there may be one ideal steel treatment temperature for which the coating adhesion is higher. | URI: | https://hdl.handle.net/10316/5176 | DOI: | 10.1016/S0257-8972(02)00515-7 | Rights: | openAccess |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
filebeeef782b1b14410b2bbbc8d4da91f92.pdf | 1.14 MB | Adobe PDF | View/Open |
SCOPUSTM
Citations
11
checked on Sep 30, 2024
WEB OF SCIENCETM
Citations
9
checked on Oct 2, 2024
Page view(s) 50
486
checked on Oct 8, 2024
Download(s)
303
checked on Oct 8, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.