As the "probably the most important metal" in the 21st century, aluminum has been widely used, and after years of development, aluminum has been presented in a variety of ways to meet people's multi-level and multi-field needs. Foamed aluminum is the leader among metal aluminum derivatives.
Foamed aluminum is a kind of lightweight porous metal material with numerous bubbles on the basis of aluminum. It also has the characteristics of metallic phase bubbles and is a kind of physical functional material with very application prospects. The manufacturing method is mainly to add additives to pure aluminum or aluminum alloy, and to manufacture it through a foaming process. Since metal has a higher stiffness than plastic, in theory, foamed aluminum of the same thickness can absorb more energy than foam made of polyvinyl chloride.
Up to now, foamed aluminum and foamed aluminum parts have been produced in the world with a variety of uses, and have been widely used in the industrial field. In the future, it will also have broad prospects in the fields of construction, chemical industry, transportation, aerospace and so on.
Of course, as a new and hot new material, foamed aluminum must have its own "housekeeping skills". For example, the density of foamed aluminum is only about 0.1 and 0.4 times that of metallic aluminum, but its bending resistance ratio can reach 1.5 times that of steel. The damping performance of foamed aluminum can reach 5-10 times that of metal aluminum. When a piece of foamed aluminum with a porosity of 84% is deformed by 50%, it can absorb more than 2.5MJ/M3C, and the energy absorption effect is far superior to other shock-absorbing materials.