Fabrication of lotus-type porous copper by centrifugal casting technique

초록

A centrifugal casting technique was used to fabricate lotus-type porous copper under hydrogen gas pressure similar to atmospheric. The molten copper was directionally solidified in the mould at a rotational velocity of 200-1000 rpm under a hydrogen gas pressure of 0.1 MPa. The results confirmed that porosity and pore size can be controlled by rotational velocity. Consequently, centrifugal casting is a promising fabrication process for safe and economical manufacture of lotus-type porous metals.