Fabrication of Lotus-Type Porous Magnesium with Anisotropic Directional Pores by Mold Casting Technique
Lotus-type porous magnesium ingots were fabricated in pressurized hydrogen atmosphere through a mold casting technique. The mold consists of two cooling blocks placed at the bottom and one lateral side. It was found that the pores started to grow upwards and horizontally and the both directional pores collapsed and then shifted to the direction. Such anisotropic growth of pores is in good agreement with the map of temperature gradient predicted by two-dimensional finite differential analysis.
Hyungsun Kim, JianFeng Yang, Tohru Sekino, Masakazu Anpo and Soo Wohn Lee
K. Sugihara et al., "Fabrication of Lotus-Type Porous Magnesium with Anisotropic Directional Pores by Mold Casting Technique", Materials Science Forum, Vol. 658, pp. 201-206, 2010