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Corrosion properties of electrodeposited nanocrystalline and amorphous patterned Ni-W alloy

Hossein Alimadadi (Institutionen för material- och tillverkningsteknik) ; M. Ahmadi ; M. Aliofkhazraei ; S. R. Younesi
Materials & Design (0261-3069). Vol. 30 (2009), 4, p. 1356-1361.
[Artikel, refereegranskad vetenskaplig]

Nickel-tungsten with satisfactory corrosion properties is a promising alloy to replace hard chromium. Relatively high adhesion between copper substrate and electrodeposited Ni-W alloy results in patterned morphology due to crack formation. In this work, corrosion resistance of patterned Ni-W alloys comprising 0-26 at.%.W were studied by potentiodynamic polarization and EIS in a medium containing Cl-. It is shown that corrosion resistance of single phase Ni-W is superior to amorphous and dual phase coated layers. It is also found that crack density is the dominant affecting factor on corrosion resistance of amorphous Ni-W alloys. (C) 2008 Elsevier Ltd. All rights reserved.

Nyckelord: resistance, films, acid



Denna post skapades 2010-02-23.
CPL Pubid: 114217

 

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Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik

Ämnesområden

Materialteknik

Chalmers infrastruktur