Because metal foam has certain strength, ductility and additivity, it can be used as a lightweight structural material. This material has long been used as the core material of aircraft clips. In the aerospace and missile industries, foam metal is used as a lightweight, heat-transfer support structure. Because it can be welded, glued or plated onto the structure, it can be used as a sandwich bearing member. Such as the support of the metal shell of the wing, the anti-collapse support of the outer shell of the missile nose cone (due to its good thermal conductivity), and the landing gear of the spacecraft. In construction, foam metal is required to make light, hard, fire-resistant elements, railings, or supports for these things. The high-speed and high-speed acceleration and deceleration of modern elevators also require foam metal, a lightweight structure with both energy absorption and load-bearing characteristics, to reduce energy consumption. Cylindrical shells are widely found in engineering structures, such as aircraft fuselages and oil well platforms away from shore. Thin-walled cylindrical shells are susceptible to damage when loaded, but if the shell is supported by continuous foam: coil, the structure has greater strength than an unreinforced central shell of the same diameter and size. Copper foam is relatively easy to make and is easy to deform, so it is suitable as a fastener. Foam metal can also be used as a reinforcement for many organic, inorganic and metallic materials. For example, the foam nickel is filled with molten aluminum and solidified to make a foam nickel reinforced aluminum alloy (NFRA) material.
Foam metal is very suitable for use as a variety of lightweight j coils for carrying panels, shells, and tubes, and is made into a variety of laminated composite materials. A typical example of porous materials used in structural parts is the manufacture of sandwich panels. The sandwich panels used in modern aircraft use glass or carbon fiber composite skins. This layer of skin is separated by metal aluminum or paper/resin honeycomb material, or by rigid polymer foam, so that the sandwich panel has a large specific bending rigidity and specific bending strength. The same technology has been extended to other applications where weight is a key indicator: spaceships, sleds, rowing boats, and movable buildings.
Cushion protection is also one of the main uses of foam metal. It must have the ability to absorb energy, and at the same time control the maximum force acting on the protected object under the limit that causes damage. Porous foam materials are well suited for this application. By controlling its relative density, the strength of the metal foam can be adjusted in a wide range. In addition, the material can withstand a lot of compressive strain under constant stress, so a large amount of energy is absorbed without high stress. In terms of preparing artificial bones, according to the requirements of pore size of 150¨m～250¨m and large porosity, inorganic materials cannot meet the requirements of use due to the strength at this time, so they gradually developed into artificial bones of foam metal. These types of foamed metals are produced by conventional methods, mainly electroplating, etc. They are subject to loads during processing such as molding and in the human body. To achieve the higher porosity required for human bones while maintaining higher mechanical properties, that is, to meet the higher porosity required for human bones while maintaining high mechanical properties, this is most of the human bone materials that do not have self-healing effects Is extremely important.
Daisy@foam-material.com