Corrosion behaviour of aluminium syntactic functionally graded composites

Nenhuma Miniatura disponível
Ferreira, S. C.
Velhinho, A.
Silva, R. J. C.
Rocha, Luís Augusto Sousa Marques da [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Syntactic Functionally Graded Metal Matrix Composites (SFGMMC) are a type of composites reinforced by microballoons exhibiting a graded reinforcement distribution. These materials constitute a promising new generation of lightweight structural materials for aerospace, marine and shielding/insulation applications. In this work, A356 alloy reinforced with silica-alumina microballoons (SiO2-Al2O3) was processed by casting techniques. The influence of the microballoon distribution gradient on the corrosion behaviour of the composite was investigated by potentiodynamic polarisation and Electrochemical Impedance Spectroscopy (EIS). Composite surfaces were analysed before and after testing by Optical Microscopy (OM) and Scanning Electron Microscopy (SEM) to determine the influence of microstructural changes.
Como citar
International Journal of Materials & Product Technology, v. 39, n. 1-2, p. 122, 2010.