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Fly ash permeability during liquid AA7075 infiltration, as a reutilization method for novel MMCs

The reutilization of waste materials into novel products is widely recognized as a challenge of high technologic
interest. This investigation aims to sustain fly ash as a suitable ceramic preform for the production
of MMCs by liquid metal infiltration of a high-alloyed aluminum (AA7075). The effect of a series of
production parameters on the resulting microstructural homogeneity of the MMC is quantified. The
influence of binder concentration preform dimension and orientation are evaluated among others. Starting
materials, preform, and final product are examined by optical microscopy, SEM, EDX, and XRD indicating
the developing structures and dominating phenomena throughout the manufacturing process.