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0021998308092217v1
42/16/1671    most recent
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First published on June 26, 2008, doi:10.1177/0021998308092217

Journal of Composite Materials 2008;42:1671.

A more recent version of this article appeared on August 1, 2008

Article

An Investigation of the Effect of SiC Reinforcement Coating on the Wettability of Al/SiC System

Cagri Tekmen1*, F. Saday1, Umit Cocen1, and L.Y. Ljungberg2

1 Dokuz Eylul University, Metallurgical and Materials Engineering Buca, Izmir 35160, Turkey
2 University of Skövde, Integrated Product Development Box 408, SE-541 28, Skövde, Sweden

* To whom correspondence should be addressed.


  Abstract

In this study, the wetting behavior of oxide and metallic coated SiC substrate with Al–Si–Mg alloy has been investigated. SiC substrate and particles were coated with SiO2, TiO2, and metallic Ni by using thermo-chemical treatment, sol-gel and electroless coating techniques, respectively. Also, the effect of doping elements (Ni, Cu and Fe in TiO2 coating) on the wettability has been investigated. Coatings were characterized by SEM, EDS, XRD, and by means of surface roughness. Contact angle results demonstrate that metallic Ni coating significantly improves the wettability. However, doping elements did not alter the results due to their detrimental effect on surface roughness.

Key Words: wettability, contact angle, Al–SiC, Sol-gel, electroless nickel, coating.


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