2006 年 18 巻 1+2 号 p. 99-102
A metallic closed cellular material for smart materials has been fabricated by sintering of metal coated powder particles. Powder particles materials coated with nickel-phosphorus alloy layers using electro-less plating were pressed into pellets (green pellets) and sintered in vacuum at high temperature using an electric furnace or a spark plasma sintering system. Then a metallic closed cellular material containing organic material was then constructed. The cross-sections of the specimens were observed using the scanning electron microscope. The compressive and damping tests were carried out to measure the mechanical property of this material. The results of the compressive tests show that this metallic closed cellular material has a long plateau region and high-energy absorption. In addition, the specimens sintered at different conditions have different mechanical properties. The compressive strength would increase due to the increasing of cell wall thickness. The results of the damping tests show that the internal friction of this material is same as that of pure aluminum.
