Foam metal refers to a special metal material containing foam pores. Through its unique structural characteristics, foam metal has a series of advantages such as low density, good heat insulation performance, and good sound insulation performance. With the gradual development of human science and technology, this new type of material is often used in aerospace, petrochemical and other industrial fields.
Features and applications of foamed metal
1. Small quality and high strength
The foam structure in the foam metal can greatly expand the volume of the material and obtain a larger cross-section. The aircraft made of foam metal can reduce the total mass by about half. When the foam metal is under pressure, the force area caused by the collapse of the pores Increase and material strain hardening effect, so that foam metal has excellent impact energy absorption characteristics. This feature has been applied to the US “Curiosity” Mars rover. Scientists are working to build a new generation of space stations with lightweight metal foam materials. In addition to the advantages of small mass and high strength, they can also burn violently with the air at the moment of entering the atmosphere when they return to the earth after their mission is over. Leave rubbish in space.
2. It is an ideal material for making filters
Using the through holes of the foamed metal to retain and trap solid particles in the fluid medium, the gas or liquid can be filtered and separated, so as to achieve the purification or separation of the medium, such as separating oil from water and refrigerant Separate the water.
3. Strong energy absorption capacity
The porous metal foam has a strong energy absorption capacity. The elastic deformation of metal foam can also absorb most of the impact energy, such as automobile bumpers, spacecraft landing gear, various buffers, energy absorbing linings of mining and metallurgical machinery, and variable materials before and after automobile passenger seats, etc.
4. Good sound insulation
When sound penetrates the foamed metal, it can scatter and interfere in the porous structure of the material, so that the sound energy is absorbed by the material or blocked by the porous structure.
Post time: Jan-04-2022
