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Hard Anodizing of Aluminium Matrix Composite A6061/(Al 2 O 3 ) p for Wear and Corrosion Resistance Improvement
Author(s) -
Picas Josep A.,
Forn Antonio,
Rupérez Elisa,
Baile M. Teresa,
Martín Enric
Publication year - 2007
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200731409
Subject(s) - materials science , anodizing , corrosion , aluminium , metallurgy , composite number , tribology , aluminium alloy inclusions , composite material , specific strength , aluminium alloy , alloy , 5005 aluminium alloy
Aluminium matrix composites fabricated with lightweight aluminium alloy matrices and high modulus SiC or Al 2 O 3 particle reinforcements, offer a high specific strength and stiffness. Although AMCs are promising for applications, the addition of a second phase to an aluminium matrix could significantly degrade the corrosion resistance in hostile environments. Anodizing has been considered as a potential means for protecting AMCs against corrosive attack. The aim of this study was to investigate the possibility that hard anodizing A6061+26%Al 2 O 3p material improves tribological properties and corrosion resistance. The investigation regarding the film formation mechanism revealed that thickness of the anodic film was not uniform; however, after anodization the corrosion and wear resistance of aluminium 6061/Al 2 O 3 composite was significantly improved.