Abstract
Composite material using sludge and aluminum powders have been fabricated by spark plasma sintering method. The optical forming conditions were investigated in terms of mechanical property. As a result, it was found that the factor of sludge amount mainly affect on the bending strength. Adding the sludge amount 2% to aluminum powders, the bending strength of composite material increased drastically than aluminum material. From the observation of crack elongation with photomicrograph, it was obvious that the sludge agglomerated powder play the role of obstruct elongation of crack.
